- (?-1356) Lord of Las Hormazas, son of Diego Gómez de Castañeda and Juana Fernández de Guzmán.
- Married to Elvira Lasso de la Vega, daughter of Garci Lasso de la Vega "el Viejo", Chancellor of Castile and Chief Justice to Alfonso XI of Castile.
- Killed in Toro in the presence of Queen Maria, by order of the queen's son, Pedro of Castile. On the same occasion, other noblemen were killed too: Pedro Estebáñez Carpintero, Alonso Téllez Girón and Martim Afonso Telo. [Pedro, ch. 16: 127-130]
Rrui Gonçallvez de Castanheda