• Joseph TRETHEWEY1862
  • Thomas TRETHEWEY(1862–)
  • Samuel TRETHEWEY(1863–)
  • William TRETHEWEY(1865–)
  • Ann Maria TRETHEWEY(1867–)
  • Jane TRETHEWEY(1869–)
  • Mary Ellen TRETHEWEY(1872–)
  • John TRETHEWEY(1874–)
  • Henry TRETHEWEY(1879–)