Yeah, I'm Polish too, but I can't say I looked very hard for the middle names haha. I was also surprised by Graciosa, but the English Wikipedia lists her as Graciosa
Maria or
Maria Beatrix.
masculine list:
https://www.behindthename.com/pnl/191050/124079feminine list:
https://www.behindthename.com/pnl/191050/124080