Complex sentence: Walter de Beauchamp (fl.1415) was an English lawyer and soldier, was the younger son of John de Beauchamp, of Powyke and Alcester, the grandfather of John, first Baron Beauchamp of Powyke.
Split into simpler sentences: Walter de Beauchamp (fl.1415) was an English lawyer and soldier. He was the younger son of John de Beauchamp, of Powyke and Alcester, the grandfather of John, first Baron Beauchamp of Powyke.