Luis de Onís

Luis de Onís y González-Vara
Minister of Spain to the United States
In office
7 October 1809  10 May 1819
Preceded byValentin de Foronda
Succeeded byFrancisco Dionisio Vives
Personal details
Born(1762-06-04)4 June 1762
Cantalapiedra, Salamanca, Spain
Died17 May 1827(1827-05-17) (aged 64)
Madrid, Spain
SpouseFederika Christina von Mercklein
ProfessionDiplomat and ambassador of Spain

Luis de Onís y González-Vara (4 June 1762 – 17 May 1827) was a career Spanish diplomat who served as Spanish Envoy to the United States from 1809 to 1819, and is remembered for negotiating the cession of Florida to the US in the Adams–Onís Treaty with United States Secretary of State John Quincy Adams, in 1819.