Good morning all
Well I woke this morning to see so many posts on this thread. I want to thank you all for taking the time to post, for your interest and for the research you have done on my behalf. It is fascinating stuff to read, and also a lot to digest. I will be reading and re-reading each post and clinking into all the links etc.
Mumsnet really blows me away sometimes.
Right, well, from what I can gather, Donat White should have another two (or is it 3) medals? We have the 1915 Star, but he was also awarded Victory and British medals. And the Silver medal (for being wounded) – is this a separate medal? These medals were not collected by him and so will either be with the India Office or Woolwich? So perhaps I can contact them and see whether I can claim them back – would this be possible? Who would I need to contact?
I spoke to my mum this morning and she did think he served in Burma. The only other things she remembers about him was the patch on his eye, he was very short, and he liked his whiskey 
So he first landed in France (Le Havre) on 17th December 1915 and discharged 04 July 1916 – I am assuming because of the loss of his eye?
It sounds like an intriguing story! Why wouldn’t he be on any of the census? What is that all about? And no birth or death record for him? This is turning into a bit of a mystery. Really sorry we have no idea of middle name or DOB or place of birth. If I could find out the name of his wife, would that help?
Also he seems to have two different serial numbers – but this was a common thing?
Also I am getting the vibes that the medal I have is quite rare?
I am especially interested in finding out about the political side of things and how he would have been treated when he got back home. The vibes I got from my mum is that he was very unhappy when he returned and turned to the drink. So would it have been likely that he enlisted from Ireland? It wasn’t compulsory was it? Why would he do that? My mum didn’t know whether he was already a professional soldier prior to the world war.
OK…well today I am going to devote some time to going on the links posted and to researching some more. I will keep updating and please, if any of you find anything else out, please let me know 
Oh and Helga, welcome to the thread, and good luck! Keep us posted!