The Ynysymaengwyn estate is located near Tywyn in Merioneth. It was settled on Richard, a second son, in 1750 by his mother Anne Corbet (d.1760) who had married Athelstan Owen (1676-1731) of Rhiwsaeson, Llanbryn-mair. Corbet Owen, the eldest son, died without issue in 1750, following which the Rhiwsaeson estate was sold. Richard Owen also died childless so the estate passed to his sister, Anne (d.1767), who had married Pryce Maurice in 1740. During the eighteenth and nineteenth centuries, the Corbet/Owen family of Ynysymaengwyn played a leading role in the Tywyn area as patrons of Welsh culture.