Deventer was the son of the businessman Augustin Deventer and his wife Marie Josefine Johanna nee Sobirey. He married Christiane Käthchen Meißner on June 9, 1917 in Erfurt. Deventer worked as an electrician. He joined the SPD and the union and became a full-time union secretary. During the November Revolution he was a member of the Workers 'and Soldiers' Council. From 1922 to 1925 he was one of the four SPD members in the Waldeck regional representation .
- Reinhard König: The members of the Waldeck Landtag from 1848 to 1929 (= writings of the Hessian State Archives Marburg. Vol. 3 = Prehistory and history of parliamentarism in Hesse. Vol. 3). Hessisches Staatsarchiv, Marburg 1985, ISBN 3-88964-122-9 , pp. 37-38.
- Jochen Lengemann : MdL Hessen. 1808-1996. Biographical index (= political and parliamentary history of the state of Hesse. Vol. 14 = publications of the Historical Commission for Hesse. Vol. 48, 7). Elwert, Marburg 1996, ISBN 3-7708-1071-6 , p. 106.
- Franz Deventer's biography . In: Wilhelm H. Schröder : Social Democratic Parliamentarians in the German Reich and Landtag 1876–1933 (BIOSOP) (the exact data set must be found using the search function)
- Deventer, Franz. Hessian biography. (As of January 10, 2020). In: Landesgeschichtliches Informationssystem Hessen (LAGIS).
|BRIEF DESCRIPTION||Member of Parliament Waldeck|
|DATE OF BIRTH||September 11, 1890|
|PLACE OF BIRTH||Dalhausen|
|DATE OF DEATH||January 10, 1952|
|Place of death||Korbach|