Martyn, or Martin is the surname of one of The Tribes of Galway, Ireland.
The Martyn family were one of a group of fourteen families who became the premier merchant and political families in the town of Galway during the late medieval and early modern eras. They traded with Scotland, England, Wales, France, Spain, and Portugal. Many were dispossessed by the Irish Confederate Wars and the subsequent Cromwellian conquest. The family have cadet branches in the U.K., Canada, USA, France, Hungary, and several other countries.
There is a worldwide internet based society for people with the family name Martin and Martyn.;
The surname Martyn is common in the West of England, particularly in Devon and Cornwall, where the name spelling could be Martyn, Martin or Marten. In 1543 John Martyn, John Martyn and Joan Martyn are listed with reference to Davidstow (Dewstow) in the "Cornwall Subsidies in the reign of Henry Vlll". In the 1569 Muster Roll John Marten and William Marten are mentioned for Davidstow. In the Register for St Stephens by Launceston the baptisms are given for two sons of Richard Martin of Dewstowe - Nicholas Martin 24 May 1584 and John Marten 21 November 1586. Dated 27 July 1646 is a Davidstow Administration for John Marten the Elder, late of Davidstow and it is possible that this is the John baptised at St Stephens in 1586