Complex sentence: The son of Hernando de la Rúa and Constanza de Menenses, he joined the army of Carlos V, participating in the Battle of Pavia and the assault on Rome in 1527.
Split into simpler sentences: The son of Hernando de la Rúa and of Constanza de Meneses. He joined the army of Carlos V, participating in the Battle of Pavia and the assault on Rome in 1527.