William Harris of Hayne, younger brother. He married Jael Thomas (died 1770), a daughter of John Thomas of Tregolls in Cornwall. His daughter Jane Harris married William Arundell of Trengwainton[3] in Cornwall and her son William Arundell (later "William Arundell-Haris") became the heir to the Harris estates of Lifton and Kenegie in Gulval, Cornwall.[10]