Mario Héber Usher
Mario Héber was a prominent member of the Uruguayan National (Blanco) Party.His parents were Blanca Usher Conde and Alberto Héber Uriarte (grand-nephew of Juan D. Jackson).[2] In 1978 his wife, Cecilia Fontana, was assassinated by poison intended for himself, sent by an unknown person or group.This tragic incident has been widely blamed on political violence associated with the period of civilian-military rule in Uruguay, which began in 1973, after which Mario Héber and many other politicians were proscribed from political activities, but which he continued to pursue clandestinely.In 2008 US Ambassador to Uruguay Frank E. Baxter was involved in a series of controversial high level exchanges in respect of these yet unresolved issues.