Complex sentence: Turreau was nevertheless a fervent revolutionary from 1789, profiting from others, especially the bourgeois of that era-elected mayor Aviron, he bought several clerical lands (such as that of the abbaye de Conches).
Split into simpler sentences: Turreau was nevertheless a fervent revolutionary from 1789, profiting like many others, especially the bourgeois of that era. Elected mayor of Aviron, he bought several clerical estates (such as that of the abbaye de Conches).