BATHGATE, s surname derived from what is now the town and parish of Bathgate in Linlithgowshire. The etymology of the name itself is uncertain. In a grant by Malcolm the Fourth to the monks of Holyrood of the church of Bathgate with a portion of land, it is called Batket, and in other charters and deeds of the twelfth, thirteenth, and fourteenth centuries, the name is variously written Bathket, Bathgatt, Batheat and Bathkat. The barony of Bathgate formed part of the dowery of Marjorie Bruce, on her marriage with Walter, High Steward of Scotland, in 1316. In the castle of Bathgate, the said Walter died in 1328, that being one of his chief residences.