GLEWLWYD MIGHTY GRIP
Gafaelfawr, Glewlwyd Strong Grip, Glwelwyd

An obstructive gatekeeper (porter) in the early Welsh poem Pa Gur yv y Portaur and in Culhwch and Olwen. In the former, he refuses Arthur entry into some keep, which prompts Arthur and his companions to recount the various adventures of Arthur’s warriors (a theme also found in Irish tales), and he declared that he never in all his long and varied career had he seen so handsome a man as the youthful Culhwch.

In Culhwch, he becomes Arthur’s chief gatekeeper, blocking Culhwch’s admission to Arthur’s court during a feast. We learn from Culhwch that he was served by Gryn, Gogyfwlch, Gwrddnei Cat Eye, Drem, Clust, Llaesgymyn, Huandaw, Gogigwr, and Penpingyon. Glewlwyd participated in the hunt for Twrch Trwyth, where he lost all of his servants except for Llaesgymyn. A Welsh Triad names him as one of the three “Offensive Knights” of Arthur’s court, for he was so large, strong, and savage that no one dared refuse him anything he asked for.

Arthur's porter in Culhwch, to whom the epithet gafaelfawr ('great grasp') is applied, which is a logical epithet for a porter, though he is also referred to as one of the Twenty-Four Knights of King Arthur's court.