Complex sentence: LaLanne was married to Elaine Doyle LaLanne for over 50 years and had three children: one from his first marriage (Yvonne LaLanne), one from Elaine's first marriage (Dan Doyle), and one together (Jon LaLanne).
Split into simpler sentences: LaLanne was married to Elaine Doyle LaLanne for over 50 years. They had three children: one from his first marriage (Yvonne LaLanne), one from Elaine's first marriage (Dan Doyle), and one together (Jon LaLanne).