Finwe Feanor III.

Tuor Feanor II. is the son Fingon, and Nerdanel Feanor making him a member of the House of Feanor.

Fingon Feanor would lead his sons - forgoing the Lordship of the House of Feanor and giving up being Prince of Cothique to his younger borther Finarfin Feanor - in order to travel eastward to Mordor where he fought with the Numenorians in trying to stop Mordor, but they failed and were massacred outside of Tol-Durthang at the Second Battle of Tol-Durthang with Fingon losing two of his children and sending the rest back to Ulthuan with a vow to never return to Mordor.