Help with sibling name for Alessandra!!

I am due in two weeks and we still don't have names picked...baby's gender will be a surprise so we have to pick a boy name and a girl name.

We tend to like classic names and don't like unisex names, we will be using family names for middle names: George, Edward or Steven for a boy and Florence or Elizabeth for a girl.

Some names we like are Lucas, Charles (nn Charlie), Theodore (nn Theo), Elijah, Isabelle (we are not italian so are a little unsure about using another very Italian name), Evangeline (nn Evie), Vera, Lillian.

I feel like it's hard to find a name that fits with Alessandra especially for a girl...any suggestions?! We are really desperate for some thoughts!