Missing war medals

Hello i would like to introduce myself, i am Mark Jones the grandson of William Snowdon Jones who fought in the second war with RWF, William was not christened Snowdon he adopted it for himself as there was more than William Jones where he lived, he lived in Snowdon, St Penygroes so he became William Snowdon, although he singned everything as W.S.Jones. He joined the RFW at the start of the first world war, and the story goes he lied about his age to june up as he thought he failed his school exams. I have spoke to my dad who said that he was wounded maybe more than once but i could not confirm this. He was born 9 June 1897 in Llanduddno, when he died i'm afraid his medals dissapp
eared, I would love to know what happened to his medals and indeed what they where, or any info about him.I will post any other info i can get, but again thank you so much for all your help.
Mark.