Joseph Hayward, informs his Friends, and the Public in general, that having been forced to leave the White Hart Inn, he has taken the Dolphin, in Sudbury.Ipswich Journal, February 15th 1772***
A dolphin is seen as a friendly animal that would help ancient mariners by twining itself round the anchor cable in a storm to prevent the anchor dragging. It also features in many coats of arms including the Fishmongers Company and the Company of Watermen. In France from the 14th cent. the eldest son of the king was known as "le dauphin".
(Most pub, location & historic details collated by Nigel, Tony or Keith - original sources are credited)