Complex sentence: He took great interest in the foundation of Trinity College Dublin, and was one of the collectors for its building, along with John Terrel and William Usher, they took possession of the land of All Hallows Monastery.
Split into simpler sentences: He took great interest in the foundation of Trinity College Dublin, and was one of the collectors for its building. Along with John Terrel and William Usher, they took possession of the land of All Hallows Monastery.