Nanna

Nanna is a playable character from Fire Emblem: Genealogy of the Holy War and Fire Emblem: Thracia 776. She is the daughter of Lachesis, the younger sister of Diarmuid, and a cousin of Ares. As a member of the noble family of Agustria's House Nordion, she possesses minor Hezul blood. By the end of Thracia happenings, she is married to Leif, though both can be paired with other characters during the events of Genealogy of Holy War.

(Source: Fire Emblem Wiki)