I'm just looking at Ireland aswell. I'm in Ireland. People will say that there is no class system in Ireland. But there is. People totally stick within their social circles.
People from wealthy families hang around with people from other wealthy families in Ireland.
I often think marriages in Ireland is less about romance, and more about the University degree and family wealth.
For example, if I know a man with a university degree in Ireland, I know he will only marry a woman with a university degree . The wealth of the family is also important.
Men from rich families will only marry women from rich families.
I have lived in Ireland for a long long time. I have never seen a man from a rich family marry a woman from a poor family.
I have seen poor people in Ireland be told that it is their fault that they are poor. Children of single parents in Ireland are totally looked down on. Even if the father just left the mother.
To succeed in Ireland you need to have had a wealthy father, get a good university degree. And then you are marriageable.