Complex sentence: Heenan's mother, Anne Stanley (born 1882), was not married at the time of her son's birth at Reefton, New Zealand, his birth certificate recorded her maiden name as his surname, and did not include any information about his father.
Split into simpler sentences: Heenan's mother, Anne Stanley (born 1882), was not married at the time of her son's birth at Reefton, New Zealand. His birth certificate recorded her maiden name as his surname, and did not include any information about his father.