Grenon was born in 1948 in
Saint-Fargeau, western Yonne. He was the owner of a grocery store selling regional products in the town of
Toucy for several years before retiring. He was also the president of several local sports associations. Grenon was a longtime supporter of the National Rally before getting involved in politics. In the
2021 regional election, he was a candidate for the
Regional Council of Bourgogne-Franche-Comté on the list led by
Julien Odoul. In the
2021 departmental election, he contested the
canton of Cœur de Puisaye but was defeated in the second round. For the
2022 legislative election, he contested the
1st constituency of
Yonne, taking the seat in the second round by defeating
Europe Ecology – The Greens (EELV) candidate Florence Loury (who ran under the
New Ecological and Social People's Union alliance) with 51.1% of the vote. He was reelected in
2024, but expelled from the National Rally shortly afterwards, after comments he made regarding
Maghrebis. He has since sat with the
non-inscrits in the National Assembly. In Parliament, Grenon sat on the
Committee on Sustainable Development, Spatial and Regional Planning from 2022 to 2024, when he became a member of the
Committee on National Defence and the Armed Forces. == References ==