Iolo and his family had many connections with Gileston. His father, Edward Williams, senior, lived there before he married and moved to Pennon, where Iolo was born. It is believed that a tombstone erected on the wall in the back of the church is an example of his work.
A possible example of Iolo's work as a stonemason may be found in the graveyard.
Taliesin Williams kept a school in the village at one time.