Born in 1634 in Parish, France; died in 1719 in Amsteram, Holland.
He joined the Congregation of the Oratory but the doctrines propounded in his writings were condemned by Pope Clement XI.
Quesnel was profoundly imbued with the errors of Baius and the Jansenists, and on account of the Jansenist opinions which he emphasized he was relegated to Orleans.
Expelled from the Congregation of the Oratory in 1684, Quesnel went to Belgium and published numerous works under assumed names.
Arrested in 1703, he fled to Holland, where he continued to write in support of his ideas.
He requested and received the Last Sacraments, and made final profession of his faith.
New Catholic Dictionary