Complex sentence: He sent his wife Jijabai as Queen Regent, their younger son Shivaji to Pune to manage his jagir of Pune, their elder son Sambhaji and another son Venkoji from his second wife stayed with him at Bangalore.
Split into simpler sentences: He sent his wife Jijabai and their younger son, Shivaji to Pune to manage his jagir of Pune. The couple's elder son, Sambhaji and another son Venkoji from his second wife stayed with him at Bangalore.