Record
Vallecillo · Boix (2017)
Príncipe de Viana 268 (2017), p. 493
Names Juan’s parents; draws on Gómez de Olea and Moreno. The original medieval records were not examined.

Record
Príncipe de Viana 268 (2017), p. 493
Names Juan’s parents; draws on Gómez de Olea and Moreno. The original medieval records were not examined.
The cited source names Pedro Fernández Cabeza de Vaca, merino mayor de León as a parent of Juan Fernández Cabeza de Vaca, señor de Vallecillo.
The cited source names Elvira Ruiz de Tovar as a parent of Juan Fernández Cabeza de Vaca, señor de Vallecillo.