Guilherme Posser da Costa (born 18 May 1953)[1][2] is a São Toméan who served as the ninth prime minister of São Tomé and Príncipe from 1999 to 2001.
Posser da Costa served as Minister of Foreign Affairs: 1987–1988, 1990–1991, and 1994–1996. He later served as Prime Minister from 5 January 1999 to 26 September 2001.
^Biografia dos deputados da VII legislatura (in Portuguese). Departamento de Documentação e Informação Parlamentar (DDIP). 2006. p. 16. OCLC 277052406.
^"Biografia de Guilherme Posser da Costa". ikuska.com. Retrieved 5 September 2021.
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de Brito Guilherme Berenguer, Brazilian TV actor Guilherme Weber GuilhermePosserdaCosta, prime minister of São Tomé and Príncipe Guilherme Samaia, Brazilian...
round. Pinto daCosta was elected leader of the MLSTP in May 1998. He resigned from the party in February 2005 and GuilhermePosserdaCosta was elected...
São Tomé and Príncipe, receiving 58% of the vote and defeating GuilhermePosserdaCosta of the MLSTP/PSD. On 14 September, he was declared president by...
in Portugal. In 1960 he cofounded, with former classmate Manuel Pinto daCosta, the Committee for the Liberation of São Tomé and Príncipe (CLSTP) - which...
with 21.8 percent of the vote, behind former president, Manuel Pinto daCosta. Costa was victorious in the two person runoff election, with 52.9 percent...
President in July 2001 with about 55.2% of the vote, defeating Manuel Pinto daCosta, who received about 40%. Menezes took office on September 3, 2001. His...
Governo"[permanent dead link], Panapress, May 20, 2008 (in Portuguese). "Líder da oposição em São Tomé Príncipe designado primeiro-ministro" Archived 24 December...
Convergence Party. He finished third with 16.88% of the vote, behind GuilhermePosserdaCosta and the eventual winner Carlos Vila Nova. He contested results...
became Minister of Finance and Planning under the Prime Minister GuilhermePosserdaCosta up to 26 September 2001. He was later advisor to the finance minister...
opposition. A three party coalition was formed under the socialist Gabriel Costa and das Neves was member of the government. She held the post of Prime Minister...
Celestino Rocha daCosta (25 September 1938 – 23 December 2010) was a prime minister of São Tomé and Príncipe. He held the post from 8 January 1988 to...
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