Turgon was the twenty-fourth Ruling Steward of Gondor, succeeding Túrin II in TA 2914. Two years before Turgon’s death, in TA 2951, Sauron declared himself openly and began rebuilding Barad-dûr and gathering forces in Mordor. In TA 2953, when Turgon died, Saruman took Isengard for his own and fortified it.

Turgon ruled for 39 years (TA 2914 - 2953) and was succeeded by his son Ecthelion II.