This is a new one for me! I've not come across
Piera before. It's so light and musical.
I don't generally like it when both names in a combo end in -a, but something like that suits
Piera.
Piera Adeliza is so satisfyingly early Renaissance. I was inspired by your
Piera Cecily, and thought
Piera Cecilia would be really lovely.
Or
Piera Valentina! Ahh, the romance, it's killing me I love it.