C. Burke Elbrick
Charles Burke Elbrick (March 25, 1908 – April 12, 1983) was a United States diplomat and career foreign service officer. During his career, he served three ambassadorships: in Portugal, Yugoslavia and Brazil, in addition to numerous minor postings.
Elbrick spoke Portuguese, Spanish, French and German, and was regarded as an expert on Iberia and Eastern Europe after World War II.
Source: Wikipedia