Date Of Execution: 5 Mar 1770
Execution Place: unknown
Willaim Matthews was convicted of the murder of Mr Cook of Normanby and three of his family by poisoning them. He mixed arsenic in with their butter. He was sentenced to death and executed on 5 March 1770.
John Leary was charged with being concerned with the murders an was convicted of manslaughter and burnt in the hand.
see Leeds Intelligencer - Tuesday 20 March 1770