He was head of house for this branch of the Borja family based on Ventres street in Xàtiva, the same branch which would later go on to become the Borgia family in Italy.
[1] Rodrigo de Borja was born in 1349 in Xàtiva, Kingdom of Valencia.
He was the son of Gonzalo Gil de Borja, who served as Jury of the Military Establishment of Xàtiva in 1340, and his wife whose name is not known.
His paternal great-grandfather, Rodrigo de Borja, the presumed founder of their branch of House of Borja, participated in the Conquest of Orihuela in 1272.
Rodrigo de Borja married Sabina Anglesola and had at least one child with her.