ZM: My information is cheap wiki stuff so I'm sure you know better.
'mother of pearl' is quite nice too.
My mother's name was Gertrude: and she got her way, all the way, all the time. 
I wish someone had taught me how they do that, the Gertrudes.
Then, as the strawberry season is still in full run I'll add some familarities too: 
aunt Lien: great, ye' should 've seen
aunt Ien: she was mean
aunt Ans: nicht ganz..
aunt Lane: cute and mundaine
aunt Gre: (oh blye me, that's a derivation of Gertrude)
aunt Co: so so ...
aunt Mies: homely and pleased
aunt Ati: Ha! She was our own Hara Mati 

The uncles?