I have found a stained glass memorial window, in a church, which was given in 1929 by my great aunt in memory of her parents and 2 of her siblings. The main part of the window shows St.George and St.Patrick - her mother was English and her father Irish. At the bottom, to the left of the inscription naming the family members, is a square showing a castle with an animal's head above it (horse?, dog?) and below it the words Tet an Avan. Does anyone have any idea what this means?