Complex sentence: Rancho San Juan Cajón de Santa Ana was a Mexican land grant in present-day Orange County, California grant given in 1837 by Governor Juan Alvarado to Juan Pacífico Ontiveros.
Split into simpler sentences: Rancho San Juan Cajón de Santa Ana was a Mexican land grant in present-day Orange County, California. The grant was given in 1837 by Governor Juan Alvarado to Juan Pacífico Ontiveros.