Complex sentence: St Albans was the son of Aubrey Topham Beauclerk and Gwendolen Loftus Beauclerk (née Hughes) and great-grandson of William Beauclerk, 8th Duke of St Albans.
Split into simpler sentences: St Albans was the son of Aubrey Topham Beauclerk and Gwendolen Loftus Beauclerk (née Hughes). He was the great-grandson of William Beauclerk, 8th Duke of St Albans.