Middle name dilemma! What's a muddle name related to October

My husband and I are expecting our first baby (a little girl) in the coming weeks. We've chosen a first name but are torn on a middle name... neither of us legally have middle names (my was accidentally left off my birth certificate and he was never given one). We would like to honour mums (Tricia and Sally) who are both born in October, also the month we got married. Currently thinking Opal as it's the birth stone of October, but we're not in love with it. Plus the first and last names are both 2 syllables too. Any suggestions?? Thanks!