Complex sentence: His father Qasim died when Bashir was still an infant, in 1768, his widow remarried and their children, Hasan and Bashir were entrusted to the care of tutors and nannies.
Split into simpler sentences: His father Qasim died when Bashir was still an infant, in 1768. Qasim's widow remarried, and Bashir and his elder brother Hasan were entrusted to the care of tutors and nannies.