Complex sentence: Local populations and old nobility were not happy with that and various local rebellions took place, the most famous ones being those of Gjon Kastrioti in 1429--1430 and Gjergj Araniti in 1432--1435.
Split into simpler sentences: Local populations and old nobility were not happy with that and various local rebellions took place. The most famous ones being those of Gjon Kastrioti in 1429--1430 and Gjergj Araniti in 1432--1435.