ST. MAWES, a town of Cornwall, in England, seated on the east side of Falmouth haven, in W. Long. 4 56 N. Lat. 50. 6. Though but a hamlet of the parish of St. Julis, two miles off, without a minister, or either church, chapel, or meeting-house, it has sent members to parliament ever since 1562, who are returned by its mayor or portreeve. It consists but of one street, under a hill, and fronting the sea, and its inhabitants subsist purely by fishing. K. Henry VIII. built a castle here, opposite to Pendennis, for the better security of Falmouth haven. It has a governor, a deputy, and two gunners, with a platform of guns. Here is a fair the Friday after St. Luke's day.