Complex sentence: Juan de Ortega, better known as Saint John the Hermit (1050--1143), was born near Burgos, Spain, and became a priest at a young age.
Split into simpler sentences: Juan de Ortega, better known as Saint John the Hermit (1050--1143), was a Spanish priest and hermit. John de Ortega was born near Burgos, Spain, and became a priest at a young age.