Also a Lieutenant Colonel in the Dutch service. He was apprehended in England involved in treasonable correspondence with Royalists, but the Lord Protector overlooked the offence and even persuaded him to undertake a secret embassy to Denmark. Later William was implicated in a plot to assassinate his cousin, but again Oliver got the case dropped. After the Restoration he became Carver to the Queen of Bohemia. On a visit to Ramsey in February 1666 he died of the plague. It was said the disease had come in a coat he had ordered from London. 400 citizens of the town also died.