Legal Advice needed urgently for Father of drowned lad?

[Moray]

Not sure if anyone can offer any advice? A friend's son sadly drowned whilst on holiday in Spain about 6 weeks ago. He and his wife are divorced and the Mother has custody of the children in Southern Ireland.
The Mother and other members of the family were on holiday in Spain and as soon as the father heard of the tragedy he borrowed money to fly immediately to Spain.
He spent 3 or 4 days at the hospital. Sadly when his son died he was told he then had to leave Spain as he had no money and nowhere to live.
He has had nothing but battles ever since? Is there anyone who can help him please?
The Spanish Authorities say he has to go over there to stand before a judge to prove he is the child's father? he has no money to do that? we are hopefully setting up a Justgiving page to help him out.
He has been told he cannot have a copy of the death certificate? post mortem report? nothing? he is not allowed to be involved in any way with the Police investigation etc.
He is totally devastated and grieving for his lost boy and just doesnt know which way to turn.
Thanks for any advice I can pass on to him.