

Il laisse dans le deuil ses filles, Lara Mainville (Christoph Laeer) et Ann Mainville-Neeson (Ed Neeson); ses petits-enfants, Félix Girouard (Manon Bilger), Margaux Girouard (Marc Strohbach), Robin Girouard, Christian Neeson (Kyra Sullivan) et Colin Neeson; ainsi que ses petits-enfants par alliance, David Laeer, Annabelle Laeer et Elisabeth Laeer.
Il laisse également dans le deuil son frère Roland Mainville (Thérèse), sa sœur Suzanne Mainville-Duchesne et l’ensemble du clan Mainville, originaire d’Espanola, en Ontario; ses belles-sœurs Denise Morin (Roger), Suzelle Dignard et Marie-Paule Filion, son beau-frère Gabriel Filion (Solange) et l'ensemble du clan Filion, originaire de Field, en Ontario.
Léon a été précédé dans la mort par son épouse, Marie-Luce Filion Mainville; ses parents, Marie-Rose Riberdy et Hector Mainville; ses sœurs Rita et Jeanne; ainsi que son frère André.
Il restera affectueusement dans la mémoire des familles Mainville, Riberdy, Filion, Girouard, Neeson et Laeer, ainsi que de ses amis, de ses collègues et de ses anciens élèves.
Une célébration de vie aura lieu à Ottawa à l’automne; les détails seront communiqués ultérieurement.
Au lieu de fleurs, des dons peuvent être faits à la Fondation des maladies du cœur et de l’AVC du Canada ou à la Société canadienne du cancer.
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It is with great sadness that we announce the peaceful passing of Léon Mainville on Tuesday, August 18, 2026, in Ottawa, at the age of 85.
He will be deeply missed by his daughters, Lara Mainville (Christoph Laeer) and Ann Mainville-Neeson (Ed Neeson); his grandchildren, Félix Girouard (Manon Bilger), Margaux Girouard (Marc Strohbach), Robin Girouard, Christian Neeson (Kyra Sullivan), and Colin Neeson; as well as his step-grandchildren, David Laeer, Annabelle Laeer, and Elisabeth Laeer.
He will also be deeply missed by his brother, Roland Mainville (Thérèse); his sister, Suzanne Mainville-Duchesne; and the extended Mainville family, originally from Espanola, Ontario; his sisters-in-law Denise Morin (Roger), Suzelle Dignard, and Marie-Paule Filion, his brother-in-law, Gabriel Filion (Solange); and the extended Filion family, originally from Field, Ontario.
Léon was predeceased by his wife, Marie-Luce Filion Mainville; his parents, Marie-Rose Riberdy and Hector Mainville; his sisters, Rita and Jeanne; and his brother, André.
He will be lovingly remembered by the extended Mainville, Riberdy, Filion, Girouard, Neeson and Laeer families as well as by his friends, colleagues, and former students.
A celebration of life will be held in Ottawa in the fall. Details will be announced at a later date.
In lieu of flowers, donations may be made to the Heart & Stroke Foundation of Canada or the Canadian Cancer Society.
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