Complex sentence: He returned to the Colony following his schooling in England, lived in lordly estate on his plantation, Westover Plantation, and gathered the most valuable library in the Virginia Colony, numbering some 4000 books.
Split into simpler sentences: He returned to the Colony following his schooling and lived in lordly estate on Westover Plantation. Byrd gathered the most valuable library in the Virginia Colony, numbering some 4000 books.