Witherborn initially sailed with Henry Morgan's fleet in attacks against Spanish cities in Central America.
[6] They raided Spanish shipping and attacked towns on the Cuban coast through 1671, committing "great violence against the Spaniards".
Aided by former buccaneer John Morrice, Beeston chased Lecat (who had entered into Spanish service) but could not catch him.
[8] Witherborn protested that his first mate held the real power, and that Articles he signed with Dumangle were just a ruse, but Lynch, Beeston, and the other judges were not swayed: "Upon consideration of the whole matter all were of opinion that having committed piracy and broken the articles of peace, Captain Witherborn ought to suffer death according to the law.
[7] While Morgan was pardoned and released, and eventually became a Lieutenant Governor, Witherborn was instead pressed into Royal Navy service.