Deirdre is one of those elegant classics that is overlooked.
My only fear is that people have a hard time pronouncing it and sometimes it comes out as "DEE-druh" or "DEER-dree." Ick. I only like the Irish pronunciation, "DEER-druh."
All of your combinations are lovely, except that three mns are a bit much for me.
Clementine is especially charming to see in there. :-)