Greyhound was a coastal trading vessel launched in Whitby in 1747 or possibly before that was wrecked in a storm off the coast of County Sligo on 12 December 1770.

[2] Lloyd's List reported on 1 January 1771 that Greyhound, Douthard, master, had been lost at Sligo while on the way from Galway to Whitby.

[2] The sole survivor had stayed on board and when the vessel settled on the beach he alerted people, but the others had already been lost.

[2] Over time, the identity of the wreck had been lost, leading to speculation that it might have been part of The Spanish Armada, or a tourist boat.

[7] This was cross-referenced to a database of over a hundred shipwrecks off the Sligo coast in the 18th and 19th centuries, the Irish Folklore Commission, and newspaper accounts, leading to the vessel being identified.