In early September 1947, a constitutionalist counter-coup ended the brief ten-day rule of Colonel Carlos Mancheno Cajas, who had seized power in Ecuador on August 23 by deposing President Jose Maria Velasco Ibarra. Military officers loyal to the 1946 constitution, led by Colonel Angel Baquero Davila, revolted against Mancheno beginning around August 31, defeating his forces in engagements near Ambato. Mancheno resigned, and on September 3, 1947 the Council of State called on Vice President Mariano Suarez Veintimilla to assume the presidency in accordance with the constitution and convened the National Congress for September 15.
Suarez served only briefly before Congress selected Carlos Julio Arosemena Tola, part of a rapid succession of leaders that preceded the stabilizing 1948 election of Galo Plaza Lasso.
Researched Details
Researched
Independent research, added record by record. Hover any label for what it means.
Target identified in Coup Atlas research: Carlos Mancheno Cajas, de facto President of Ecuador (removed in the constitutionalist counter-coup)
RESEARCHED NAME
Key figures
Carlos Mancheno Cajas (de facto president removed by the counter-coup)
Angel Baquero Davila (colonel who led the constitutionalist revolt)
Mariano Suarez Veintimilla (Vice President called to the presidency, 1947)
Sources
A U.S. State Department memorandum recorded that Mancheno's coup was rejected by public opinion, that Vice President Suarez had demanded the government be transferred to him under the constitution, and that on September 3, 1947 the Council of State called on Suarez to assume the presidency and convened Congress for September 15.
SOURCE REVIEWEDU.S. Department of State, Foreign Relations of the United States, 1947, Vol. VIII, Document 599 (memorandum on Ecuador)open source ↗
Mancheno served as president only from 23 August to 2 September 1947; Velasco's vice president Mariano Suarez removed him from power shortly after his coup.
SOURCE REVIEWEDSimple English Wikipedia, "Carlos Mancheno Cajas"open source ↗
Mariano Suarez Veintimilla, ousted as vice president by Mancheno in 1947, served briefly as President of Ecuador from 2 September to 16 September 1947 after Mancheno was ousted.
Mancheno's presidency ended in early September 1947 when he was ousted in a counter-coup led by Colonel Angel Baquero Davila, who mobilized pro-constitution units and defeated Mancheno's forces near Ambato before power transitioned to Suarez Veintimilla.
The Cline dataset dates this 1947-09-03, matching the day the Council of State formally called Suarez Veintimilla to the presidency per the contemporaneous FRUS memorandum. Secondary sources date Mancheno's actual fall to September 2 and Baquero's revolt to around August 31, so the exact-day framing depends on whether one counts Mancheno's ouster or the formal constitutional restoration. The FRUS primary document and Simple English Wikipedia were read directly; the Baquero counter-coup detail is CHAIN via Grokipedia and is consistent with the FRUS account of a constitutional-restoration movement.
Cross-Reference
Only one dataset carries it. One of the three reference datasets we check against carries this event; the others do not list it. That is not a contradiction — the datasets cover different periods and use different thresholds — but it means the record has had less outside corroboration.
Identifiers for finding this same event in the other datasets:
Coup Atlas research identifies the target as: Carlos Mancheno Cajas, de facto President of Ecuador (removed in the constitutionalist counter-coup).
Baseline coding: Incumbent executive removed from power. Recorded leader fate: deposed; not physically harmed. The baseline file does not name individual targets; researched names are kept in a separate layer.
Baseline Dataset Citation
Cline Center Coup d’État Project Dataset, v2.2.2
Peyton, Buddy, Joseph Bajjalieh, Michael Martin, and Andrea Gerald. 2026. Cline Center Coup d’État Project Dataset. Cline Center for Advanced Social Research. V.2.2.2. February 17. University of Illinois Urbana-Champaign. doi: 10.13012/B2IDB-9651987_V10
“Mancheno Regime Ousted in Ecuador,” September 3, 1947
This is the citation trail carried by the baseline dataset, grouped by outlet and rejoined from the line-wrapped original. Coup Atlas has not independently re-checked every document; read the original before citing a specific claim. URLs the import damaged beyond safe repair are shown as plain text and listed in citations-report.md. How this list is built →