Complex sentence: A fall-out with his jealous brothers forced him to return to Matsusaka at the age of 28, where he remained for two decades, and only returned to Edo on his elder brother Toshigutsu's death in 1673.
Split into simpler sentences: A fall-out with his jealous brothers forced him to return to Matsuzaka at the age of 28, where he remained for two decades. He returned to Edo on his elder brother Toshigutsu's death in 1673.