Casgliad o 15 eitem a oedd ar un adeg yn perthyn i Solomon Williams a'i deulu o Brynaerau Isa ym mhlwyf Clynnog, Sir Gaernarfon.
Mae'n cynnwys llyfr lloffion a dyddiaduron Solomon Williams, mapiau o'r stad yng Nghlynnog a dyddiaduron ei fab John Solomon Williams.
This collection of 15 items nearly all relate, or at one time belonged, to Solomon Williams of Brynaerau Isa in the parish of Clynnog, Caernarfonshire, and his family. They include commonplace books with entries by Solomon Williams, 1806-1845; account books of John Owen of Caernarfon, overseer of the poor for the parish of Clynnog, 1828-1829; maps and surveys of the estate of Solomon Williams in the parish of Clynnog 1842; diaries of the aforementioned Solomon Williams and his son John Solomon Williams, 1836-1887; and a medicine book.