When Tuor came, carrying Ulmo's warning of the danger to Gondolin, Maeglin sat at Turgon's side and argued against Tuor.
He appeared before Tuor and urged him to go to Gondolin as a messenger to Turgon; when he got there he eventually married Turgon's daughter Idril and fathered Eärendil; Ulmo saved Eärendil's wife Elwing from the sack of the Havens of Sirion, allowing her to take a Silmaril to her husband, which allowed him to gain admittance to Valinor and plead for aid.
Ulmo |
There he was greeted by Tuor of the Third House of Men, who passed him Ulmo's bidding to guide Tuor to Gondolin.