King Alfonso III and his wife "Ximena regina" donated property to Sahagún by charter dated 30 Nov 904, subscribed by "Garsia, Ordonius, Froila, Ranimirus, Gundisalvus", presumably their sons although this is not stated in the document. "Adefonsus rex" donated property to Sahagún by charter dated 28 Apr 909, subscribed by "Vimara Froilani, Garsea, Ordonius, Gundisalvus, Froila, Ranimirus, Dunninus". "Garsea princeps et Mumma domna regina" donated certain churches, including the church obtained by “tius noster domnus Nunnus de dato patris nostri”, to Eslonza monastery by charter dated 30 Aug 912, confirmed by “Ranimirus...”.
Titular King of León. "Garseani…rex…cum congugie mea Muma doma regina" donated certain the town of Mutarraf to Eslonza monastery by charter dated 13 May 923 (presumably misdated), confirmed by "Ranimirus, Urraca regina…Gutierre Memendiz, Sesebutus Petri…".
His death is commemorated in an inscription in the Cathedral of Oviedo, which names his father. "Ranemirus rex et Uraca regina" donated "lacum…in berno Bustum…Uitalicum" to Eslonza monastery by charter dated 26 Jun 938 (presumably misdated). 1