Ynyscynhaearn in Gwynedd was once an island in the middle of a lake. The gravestones here are special. There's a stone for David Owen, the 18th-century harpist and composer, and to gardener John Ystymllyn — the earliest well-recorded Black person in North Wales. In this preview of our film Straeon Mewn Maen (Stories in Stone), Natalie Jones of Race Council Cymru celebrates John's legacy.
