Hi, sorry to be so vague! It's late here and I have very limited info I'm afraid. I spent most of this afternoon trawling through the local cemetaries in the pouring rain but found nothing!
Leusa can be short for Elizabeth and King was a nickname given to her. She had a daughter, Nancy also nicknamed King.
Glyndwr was born in 1913, could be in treherbert, Glamorganshire or up here in Ffestiniog. He had sisters, Myfanwy, Nancy, Anne Jane and brothers Richard Gwaenydd and John Maldwyn. There may have been others as some of the older generation local people thought she may have been married up to 3 times (or had children from 3 different fathers!)
Elizabeth must have died around 1955 but I don't have a clue when she married John Ellis Jones!
Sorry I don't have any further info at the moment. I'm awaiting a reply on facebook from my late mother's cousing, he should be able to shed some light on the situation!
Thank you for your time
Arwel