de Valera paid a courtesy call to his neighbour and friend the German ambassador after Hitler's death to make a formal acknowledgement, but also to reassure the man that he would not be expelled. In Germany he would have been a target of both the allies and any lingering Nazis, since he had kept very quiet in dispatches about the extent to which Irish military neutrality was a cover for strong support for the allies.
I was in college in the late 70s when Cork's synagogue was closing, and there was a lot of sadness. The community was seen as good citizens and its Jewish Lord Mayor was well liked, but there was an acknowledgement that for a lot of younger Jews emigration to Israel was important and that was leaving small communities with fewer and fewer choices for people who didn't want to 'marry out'.
In Ireland, both the interest in going to other countries to work, and the wish to marry within ones faith group, were understood. And for some Irish religious traditionalists at that time Jews, outsiders in some ways, were seen as at least better than the Catholics/Protestants
That Mayor, Gerald Goldberg, had a life that included exposure to Irish anti-antisemitism, to Irish republicanism, and to Zionism. An interesting man.
https://en.wikipedia.org/wiki/Gerald_Goldberg