Middle Name for Addalynn

So my husband an I have always liked the name Addalynn and originally we decided our first girl would be Rebekah Addalynn nick name Beccalynn but my Aunt (who has been trying for 8 yrs wants the name Rebecca and I'm not about stealing especially since i know they've been trying so long) so I thought we'll maybe we'll do Addalynn Rose since my middle name is Rose but I just found out that's my 2nd cousins babies name so now I'm at a loss for a middle name and need help. I like unique but not too unique and I love old fashion names the baby will also be half Puerto Rican so if you know of any Spanish names that will go with Addalynn that'll be cool too. Thanks guys.