Complex sentence: Bossuet's brother was Jacques Bénigne Bossuet (1664--1743), abbot of Savigny and he was nephew by his father to another Jacques Bénigne Bossuet, the Bishop of Meaux and godson of Louis de Bourbon, Prince of Condé.
Split into simpler sentences: Bossuet's brother was Jacques Bénigne Bossuet (1664--1743), abbot of Savigny. Nephew by his father to another Jacques Bénigne Bossuet, the Bishop of Meaux and godson of Louis de Bourbon, Prince of Condé.