Mary Elizabeth Wilson

Mary Elizabeth Wilson (née Cassidy; 11 June 1889 – 5 December 1962), known in media as The Merry Widow of Windy Nook, was an English serial killer and the last woman to be sentenced to death in Britain. She was convicted of capital murder in Durham in 1958. However, the sentence was commuted to a prison sentence due to her advanced age.

Biography Wilson was born Mary Elizabeth Cassidy on 11 June 1889, in Catchgate, Stanley, County Durham, and christened on 30 June 1889 at Our Blessed Lady and St. Joseph, Brooms, Co. Durham.

She married her first husband John Knowles around November 1914. They settled at a house in Windy Nook, Gateshead. Her lover John Russell eventually moved in with them. In 1955, Knowles died. Five months later she married Russell. He died in 1956 (or early in 1957). The attending physician declared that both men had died of natural causes. Wilson inherited their money, £42.

In June 1957, Wilson married her third husband, Oliver Leonard, a retired estate agent. He died only 12 days into their marriage, leaving her £50. She soon married a fourth husband, Ernest Wilson. His estate included up to £100, a bungalow and life insurance. He died within the year. This time, she did not even bother to attend the funeral. The remains of her earlier two husbands were exhumed at a later date and pointed to the same cause of death. There was no reason, however, to have a second trial.

In popular culture Her story was depicted in Deadly Women, on the Investigation Discovery channel as the season 11 premiere episode entitled "Mid Life Murder".