Tierra de Campos
Analyzing medieval documentation and charters, modern historians have been able to clarify the origins of this important lineage from Tierra de Campos, possible descendants of the Banu Mirel and the Banu Gómez clans. According to these investigations, Rodrigo Gutiérrez Girón was the son of Gutierre Téllez and Urraca Díaz. His paternal grandfather was Tello Fernández, a nobleman from Saldaña who appears in 1116 as tenant-in-chief in Torremormojón and later, in 1127, holding the same post in Tierra de Campos, and governing the castle of Aceca, Toledo where he died in 1133 when the castle was taken and destroyed by the Almoravids.