On 28 October 924 Fortún witnessed the transfer of the monastery of San Pedro de Usún to the diocese of Oya, in which charter he is titled "lord of Nájera".
[4] On 26 June 933 he witnessed a royal donation of property to the Riojan monastery of San Martín de Albelda.
One grant to Albelda is dated to the time while "García Sánchez [was] reigning in Pamplona, [and] Fortún Galíndez in Nájera" (regnante Garsea Sancionis in Pampilona, Fortuni Galindonis in Nagera).
On 15 April 958 a certain Muza and his sister Tota made a donation to Albelda while "king García Sánchez [was] reigning in Pamplona, and under him Fortún Galíndez in Néjera" (regnante [...] rex Garcia Sanciz in Pampilona, et sub eius Fortun Galindonis in Nagera).
[8] The last record of Fortún Galíndez (Furtunio Galindonis) is in two charters (13 and 30 November 972) belonging to the monastery of Santa María la Real de Nájera.