In the last ten to fifteen years, Ireland has had such a huge amount of immigration, a lot from Eastern Europe, but many, many from Africa and Asia too. I do remember the question being raised in training classes several years ago, about care homes and residents of a different culture - or even day care centres. No conclusion was reached though, because so far, it just hasn't arisen. Yet, I see many quite elderly people among the Asian community here - always with younger relatives.
I do have maybe a little insight into the problems of one-culture care facilities though. I'm in Southern Ireland, which has always by tradition been Roman Catholic. My husband and I are not Catholic though - we aren't Protestant either. We fall into a very "minority" Christian group, and Wm was a Minister for all his adult life. Anyway, it was arranged for him to attend the local Alz. Soc. Day Centre one day a week. He went twice, and refused to go back - he hated it. And one of the problems was that they were saying prayers the days he was there, and they were Catholic prayers to Mary, and he was both unfamiliar with them, and would have been uncomfortable with them. But I could see that it would have been a very familiar and comforting ritual for the other clients at the Centre. So, the question is - how do we keep that comforting and familiar culture and yet make our Day Centres and Care Homes multi-cultural? And the problem of losing what would be a second language, and going back to the language of their youth is another one, isn't it? I was interviewed one time by a woman who wanted a home carer to live in with her mother, who had Dementia. She said her mother couldn't go to a Day Centre or a Nursing Home, as she was Swiss by birth, and as her Dementia had progressed, she had lost all her English, and reverted to her native language, and so couldn't communicate with people around her here anymore. I didn't take the job - I don't speak Swiss German, and don't do live-in work anyway.
Sweetmole, you have my sympathies and blessings as you proceed. Let us know how you are getting on. Once you cast your net out for information and support, you may (hopefully!) find that there is more out there than you know.