Looking for Renato POW in England second world war

[clarecollins12]

I am looking for my grandfather who was an Italian POW in England into the Second World War. We think he was captured in Tripoli and was at a POW camp in Motcombe, Dorset and went on to be a farm labourer on a farm in Horsington, Somerset. We only know his first name was Renato and think he was from the south of Italy.
We have tried so many avenues but with only a first name it is impossible!
Can anyone help please?