Squire of Dunster Castle, Somerset.
Dunster Castle is at the village of Dunster, Somserset.
See https://en.wikipedia.org/wiki/Dunster_Castle
Burke 1847:
George Luttrell, Esq., who inherited likewise his mother's lands, and m. 1st, Joan, dau. of Hugh Stcwkley, Esq. of Marsh, co. Somerset, by whom he had Thomas, liia successor.
He m. *2ndly, Sylvestra Capper, by whom (who m. after his decease, 1st, Sir Edmund Story, and 2ndly, Gyles Penny, Esq.) he had two daus., Diana, wife of Alexander Lynde ; and Sarah, of John Wogan. Mr. Luttrell d. at an advanced age, in 1630, and was succeeded by his son, Thomas Luttrell, Esq. of Dunster Castle.