Hi Della, bit of a funny one here I'm afraid.
I've found George buried in Maesteg Cemetary, but no sign of his wife or Iris. It's been quite hard locating them in all honesty.
There was no record for any of them in Llangynwyd Cemetary (using the GFHS guides), so I checked the Maesteg Burials CD (again, GFHS).
Nothing in the transcriptions of the records for all three of them, so I checked the scans of the original books. George appears as living in 50 Coegnant Road, burial date of 17/10/1946. Unconsecrated grave section A.M., plot 962.
However, there is nothing in the scans for Iris (checked 1918/1919), or Sarah (checked 1946/1947)??
I've not got time to pop up the cemetary today, but am off on Thursday so I will pop up then and see the groundsmen to get them to show me where the grave is - I will get a photo regardless.
Typically, because the burial of George has not been transcribed, there is no x-ref to whoever else is buried in the same grave. I may be able to find out more on Thursday, but it's a start