Complex sentence: Lyon Gardiner Tyler (August 24,1853-February 12,1935), U.S. educator and historian, he was the son of former President John Tyler and former First Lady Julia Gardiner Tyler.
Split into simpler sentences: Lyon Gardiner Tyler (August 24,1853-February 12,1935) was a U.S. educator and historian. He was the son of former President John Tyler and former First Lady Julia Gardiner Tyler.