[3] His younger sister, Chantal De Souza, a future first lady, later married Beninese President Thomas Boni Yayi, after having met through him.
[1] From the 1970s de Souza worked for the Central Bank of West African States (BCEAO) in Cotonou as internal controller and later as national director for Benin.
[1][4] During his time at BCEAO de Souza was colleagues with later President Thomas Boni Yayi.
[1] Administratively he held the position of Head of Department of Economic and Financial Affairs in the Office of the President.
[6] De Souza publicly disagreed with President Boni Yayi's decision to have Prime Minister Lionel Zinsou be the candidate for the Cowry Forces for an Emerging Benin during March 2016 Beninese presidential election.
[4] Having won the elections, Talon confirmed Boni Yayi's decision to have de Souza be Benin's nominee as President of the ECOWAS Commission.
[1] De Souza subsequently laid down his seat in the National Assembly and was succeeded by Justin Adjovi.