Jonathan TYACK married probably Jane (or Jenefer, Jenny) CLARK in Camborne October 18, 1804. He was baptised in Camborne March 05, 1775, son of John TYACK and Christian THOMAS. John TYACK could be the one who was baptised in CamborneFebruary 16, 1734, son of William TEAGUE and possibly of Philippa (buried in Camborne Mars 22, 1746, wife of William TEAGUE). William could as well be William TYACKE of MARAZION, whom we know a daughter, Philippa, baptised in Camborne May 1, 1725, who married Simon VIVIAN of ROSKEAR in Camborne November 12, 1748, and was buried in Camborne July 25, 1770. She appears in Vivian’s “Visitations of Cornwall”, p. 542.