I need a name for my baby girl that matches my son's name?

Oliver sounds sort of classy British, to me, so any classical names would sound fine. Lilah sounds a little different, but it could work if you love the name. Lilith or just Lily sound a little better. I have to agree with the first poster, Miriam Alice sounds amazing. Evelyn Marie or Mary Evelyn is one of my favorites. Ollie and Evie would be especially cute, if you like nicknames. Oliver and Evelyn does sound almost like a tongue twister, though. Oliver and Miriam sounds the best to me. Perhaps Ollie and Miri (my-ree). Miriam Violet, Miriam Evelyn, Miriam Jeanine, Miriam Catherine... it goes well with several names.