Guilherme Posser da Costa is a São Toméan who served as the ninth prime minister of São Tomé and Príncipe from 1999 to 2001. He also served as Minister of Foreign Affairs: 1987–1988, 1990–1991, and 19

Aurélio Pires Quaresma Martins is a São Toméan journalist, businessman and politician, who until May 2018 was leader of the Movement for the Liberation of São Tomé and Príncipe/Social Democratic Party