Complex sentence: He was son of Alonso Hernández Diosdado Mosquera de Moscoso and Isabel de Alvarado and the nephew of the also Spanish conqueror Pedro de Alvarado, who had excelled in the conquests of Mexico and Central America.
Split into simpler sentences: He was son of Alonso Hernández Diosdado Mosquera de Moscoso and Isabel de Alvarado. His uncle was the Spanish conqueror Pedro de Alvarado, who had excelled in the conquests of Mexico and Central America.