Olivier D. A. Gh. Maingain is a Belgian francophone politician and former president of DéFI. Wikipedia
Born: 1958 (age 65 years), Woluwe-Saint-Lambert, Belgium
Party: DéFI
Children: Fabian Maingain
Education: St Michel College, Brussels
Previous campaign: European Parliament election in Belgium, 2019
Office: Member of the Chamber of Representatives of Belgium since 2014