Mendbrark was born in the summer of year 167, son of Briasstue and Brantail, in House Brondluith. He was generous, loyal and skeptical, with a gift for leading others. In the spring of year 172 he married Zaibres, and was widowed in the autumn of year 178. In the autumn of year 178 he married Llomabria. He had 2 children: Stiandzol, whom he buried; and Skaurau. He had a sibling on his mother's side: Guendchas. His mother, Briasstue, died swept away by a river in flood when he was 16 years old. His father, Brantail, died of old age when he was 19 years old. In year 184 he was briefly at the head of Llaness. From year 184 he was ruler of the Methllerk until his death. He decided to raise houses (35 times), to send settlers out (44 times), to hold a feast (19 times) and to arrange a marriage (8 times). He lived under the rule of Sauchia and Salziark. He knew hunger in Llaness. When he died, House Brondluith counted 3 other members. He died of old age in the spring of year 231, at the age of 63. He was survived by Skaurau. Duirklath succeeded him. He lived to have a grandchild.