Home/ Resources / Projects / CIA Pseudonyms / pseudonym: PRINCEP_STIRLING

Pseudonym: Princep, Stirling

Definition:
Unknown identity. Stirling D. Princep took part in Operation PBSUCCESS, and, in particular, appeared to work closely with Matthew H. Ontrich (Nestor Sanchez).
Category:
pseudonym
Status:
Unknown
Discussion:
Princep also liaised with Irving Cadick (William Robertson), among others, during 1954. Princep was probably associated with SKILLET (Whiting Willauer, U.S. Ambassador to Honduras). Also, a cable in March of 1954 stated that Princep was going to San Pedro Sula (the capital of Cortes Department, Honduras), on March 6th, to pick up his car and would return the same day. In addition, a cable in May of 1954 for Irving Cadick mentioned that he would have to "depend on Princep to provide all available details through his special HQs source." Therefore, it seems as if Stirling D. Princep had an influential source at CIA Headquarters at that time. Furthermore, a dispatch in May, 1954, stated that Stirling D. Princep should inform Ontrich that the "Pepe" who would be the channel in Guatemala was Wilfred O. Clower (Joseph G. Sancho). Moreover, a memorandum from Jake D. Esterline in June, 1954, made reference to the Princep "manifest violation." Princep also debriefed an asset in August of 1964. The cable was from Belem, which is a city in Brazil.
Sources:

Foreign Relations of the United States, 1952-1954: Guatemala: Current Section: Persons and Pseudonyms

Page XX: ..."Princep, Stirling D. (pseudonym, identity not released)..."

https://www.cia.gov/library/readingroom/docs/DOC_0000914546.pdf

01/06/54: Cable from Lincoln to Director: Slugline PBSUCCESS RYBAT: "1. Stirling D. Prinsep was originally designated for (REDACTION) in September 53 (REDACTION) which failed to materialize. In Nov. cover initiated (REDACTION) and in early Dec. Dunbar was assured Prinsep would receive (REDACTION) and case would be expedited. Now informed he does not expect reach field until about 1 February. 2. Recognize your cognizant foregoing and importance his assignment to PBSUCCESS nevertheless believe reiteration same necessary as we have no communications whatever with vital PBSUCCESS operations in field until Prinsep arrives. Therefore Dunbar desires to be assured the importance this matter is recognized and that it is receiving appropriate priority handling at HQs. 3. Prinsep arrived Lincoln 0001 Jan 5, expects arrive HQs 6 Jan 1700 hours." - - - Handwritten note at bottom: "1. Nothing until end of year - 1 Feb." - - - Handwritten note at top: "1. Called Maclean 4:15 Jan 6. Will check. 2. Called Maclean - 9:35 a.m. 7 p.m. - busy."

https://www.cia.gov/library/readingroom/docs/DOC_0000913106.pdf

03/06/54: Cable from Withheld to Lincoln: Slugline PBSUCCESS RYBAT: FROM CADICK - ONTRICH: "1. Calligeris is agreed all principles. Working on details. Progress being made. 2. May be 2 days delay. 3. Princep going San Pedro Sula 6 Mar. Pick up his car and return same day."

Foreign Relations of the United States, 1952-1954: Guatemala: Current Section: 124. 4/10/54-Telegram From the Intelligence Agency to the CIA Station in [place not declassified]

04/10/54: Telegram to Withheld CIA Station: "46015. Re: DIR 45998. (2) For SKILLET from Whiting. 1. High level meeting referred to in ref scheduled for this afternoon following which SKILLET will receive further guidance. (3) However in meanwhile Whiting requested by Starke convey to SKILLET following personal message. 'SKILLET should not have any further direct contact with local authorities or other non-ODYOKE (U.S. Government) individuals with regard to any aspect of Success except pursuant to and within limits of specific instructions and authorization from HQs ODACID (U.S. State Department) and KUBARK (CIA). Starke very concerned with regard present extent official exposure and considers that this raises serious question desirability continuing operation as previously planned.' 2. In light of the foregoing and without in any way purporting to prejudge outcome of basic policy decision re continuation and timing success Whiting suggests SKILLET may wish consider and offer recommendations concerning best means softening impact local authorities SKILLET’s withdrawal from direct contact. Realize possibility they may interpret such breakoff as evidence complete reversal ODYOKE position regarding all aspects this matter. Also on assumption policy decision may favor continuation project in something like present form recommendations SKILLET and Princep for re-establishment indirect channels communication will be needed for consideration here."

https://www.cia.gov/library/readingroom/docs/DOC_0000136116.pdf

05/07/54: Cable from Lincoln to Director: Slugline RYBAT PBSUCCESS: FOR CADICK SOONEST: "1. Your message Ref B encouraging and commendable. Disregard para 3, Ref A and proceed to best your ability within bounds of security which means no ODYOKE (U.S. Government) participation aside covert planning and preparation. 2. Depend on Princep to provide all available details through his special HQs source (per DIR 49262 (OUT 91802). 3. LINC requested shaped changes be delivered on flight 15 way 7. 4. Ref A provided guidance re cutting Calligeris. 5. Concentrate on UDT to exclusion of rail sabotage as possibility of destruction far outweighs harassment. 6. Time may permit flying limpets to you. If possible will attempt deliver all available up to 26 on black flight 16, May 8. 7. Fully recognize your limitations and wish best of luck."

Foreign Relations of the United States, 1952-1954: Guatemala: Current Section: 152. 5/16/54-Telegram From the Central Intelligence Agency to the CIA Station in [place not declassified]

05/16/54: Telegram to Withheld CIA Station: "839. Pass to SKILLET from ODACID and Whiting. 1. We have received report from JMBLUG to following effect. (REDACTION) was told by (REDACTION) that ship Alfhem arrived Puerto Barrios 1500 hours 15 May carrying shipment consigned Guatemalan Government and allegedly consisting of 2000 tons armament, types unknown. Further reported that vessel met by Sanchez, Minister of Defense, and unloaded by 1800 hours. 2. Information available here indicates Alfhem is Swedish flag vessel of 4850 gross tons owned by Angbats A.B. Bohrslavska Kusten. Lloyds loading list of 11 May gives last sighting off Brest, France, reportedly enroute from Stettin, Poland, to Dakar. 3. You requested to do following: utilizing the services of the naval attaché, KUBARK personnel, (REDACTION) Embassy personnel, (REDACTION) and your own best judgment, get for us the fullest evidence regarding this shipment which if necessary can be used to prove Guatemalan efforts to import clandestinely arms from behind Iron Curtain. Such evidence would include the originals or photostats of the ship’s documents showing origin of shipment, consignor, consignee, description, tonnage, also photographs of ship plus recognizable pictures its captain and crew. Also aerial and ground photos of unloading operation and of the units of cargo. Make every effort to obtain specimens of the cargo by purchase, theft, loss overboard and subsequent clandestine recovery. 4. Exercise your resourceful judgment as to any additional item of evidence obtainable. Report urgently your plans and steps taken to accomplish them. First item of info required is positive identification and location of vessel which should be possible by aerial recce and preferably photos. 5. This action given SKILLET because he believed have more facilities and greater freedom of action than JMBLUG...6. Note for Princep: this is top priority matter and you requested provide fullest support to SKILLET."

https://www.cia.gov/library/readingroom/docs/DOC_0000915229.pdf

05/16/54: Dispatch via Air Pouch from Jerome C. Dunbar, Lincoln to Withheld: Subject: Operational/Communication Channels: "1. The attached are sterile notes for Matthew H. Ontrich (Nestor Sanchez). 2. Stirling D. Princep should inform Ontrich that the 'Pepe' who will be the channel in Guatemala is Wilfred O. Clower (Joseph G. Sancho). Clower is about thirty-five years of age, married, and has one child. Before his employment with KUBARK (CIA) he lived in (REDACTION), where he was a reporter for a local newspaper and worked for (REDACTION). During his employment with KUBARK he served in NTPLUME (Note: Probably meant to read HTPLUME - Panama), primarily (REDACTION). Bannister and Nutting evaluate him as conscientious, willing to work, level-headed and capable. 3. The foregoing is to be communicated to Ontrich so that he may have a better picture of the services that Pepe can render. 4. Princep will note that prompt action is required on the attached sterile notes."

https://www.cia.gov/library/readingroom/docs/DOC_0000915159.pdf

05/17/54: Cable from Lincoln to Director: Slugline PBSUCCESS RYBAT: RE: LINC 2745 (IN 47769): FOR ONTRICH: "1. Awaiting info from GUAT re confirmation and rail data. Meanwhile HQs has directed certain specific KUFIRE (Intelligence) operations to SKILLET of which Princep will keep you informed as they develop. 2. Should SKILLET call on your assets in fulfillment his objective you are authorized have Lugton cooperate fully using Calligeris KUFIRE assets with latter's knowledge. Important however you do not permit breakdown local security or serious divergence from KUHOOK (CIA Paramilitary Operations Staff) plans now underway. 3. HQs suggests consideration blowing steel support girders under PTO Barrios dock; dry cargo side, as reported badly corroded and very weak. Their info indicates dock would be used due shortage rolling stock and trucks. 4. Request you discuss possibilities above demolition with Calligeris and plan accordingly as alternative or possibly supplementary to rail execution dock target plan should await confirmation presence of vessel, unloading status and whether actually contains arms. Advise your capability re this report. 5. For Princep: LINC is cognizant of DIR 00839 (OUT 95050) and SKILLET's authority utilize KUBARK (CIA) personnel. However for your guidance in discussions this matter bear in mind this is a KUFIRE assignment and LINC construes HQs directive as applying to KUBARK KUFIRE assets. Note above directive to Ontrich and recognize latter as senior PBSUCCESS officer in WSHOOFS this clear all SKILLET operational requests re PBSUCCESS with Ontrich. Appreciate your position this matter and feel assured you will be able keep things in balance locally while aiding SKILLET in this important instance."

https://www.cia.gov/library/readingroom/docs/DOC_0000921886.pdf

06/16/54: Memorandum from Jake D. Esterline for Withheld: Subject: Summary of DDP/PBSUCCESS Meeting of 16 June 1954: ..."3. FOR (REDACTION): Request you have (REDACTION) re-examine the Princep 'manifest violation' in (REDACTION) in view of determining whether we have submitted adequate reports to security and to DDP protecting our security interests."

104-10187-10403: CABLE: ON 4 AUG 64 PRINCEP MET

08/05/64: Cable from Belem to Director: Slugline PBRUMEN: "1. On 4 August 64 Princep met SUBJ who replied all questions Ref E with only minor discrepancies. Ref A clarified as follows. A. SUBJ was commie sympathizer Guatemala 50 to May 54 where attended Jacobo Mendez Marxist school. Joined PCH San Pedro Sula 58. Used party alias Venceslao Rojas. Was offered trip to Cuba 59 but declined. Quit PCH early 61 to join PRH was chief editor PRH newspaper Adelante. Arrested three times San Pedro Sulo. First arrest 61 for Marxist activity with Rogelio Valle, Fernando Duron and Carlos Vallegio Aguila. All members commie front Sindical Unity Committee. Second arrest May 62 for speaking at PRH rally. Third arrest April 63 for distributing propaganda. Left Hond Sept 63 prior to coup...3. Princep feels SUBJ is low level opportunist who may have some useful info for sale but whose main motivation is obtain transportation to Rio where he might fail contact PBSWING (U.S. Embassy, consulate, consul general, or official installation) unless stranded again. SUBJ recruit able as penetration PRH but does not appear be good KUWOLF (Psychological and Paramilitary Staff) candidate. 4. If RIOD still wishes debrief SUBJ cable contact plan. C/S Comment: *Requested traces Oscar Valasquez."

Contributors:
Gavin McDonald

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