Following the death of her husband in 1201, Nuala apparently lived somewhere in north Galway, near Cong, where she was interred upon her death in 1226:
Nuala inghen Ruaidhri Uí Conchobhair baintighearna Uladh d'écc i c-Conga Fechin, & a h-adhnacal go h-onórach i t-teampall canánach Conga/Nuala, daughter of Roderic O'Conor, and Queen of Ulidia, died at Conga Fechin, and was honourably interred in the church of the Canons at Cong.