William Alfred Bayly (15 July 1906 – 20 July 1934) was a New Zealand farmer and convicted murderer. He was born in Auckland, New Zealand, on 15 July 1906. In October 1928, Bayly's cousin, 17-year-old Elsie Walker found dead in the bushes with a bruise on her head. Bayly was suspected of killing her, but he was never charged. Bayly was hanged in Mount Eden Prison, Auckland, on 20 July 1934. He was survived by his wife and two young sons. Police finally buried the remains of Samuel Lakey in 2015. His remains had been used for forensic training.