Baby girl name for ollie and lou (grandmothers names)?

Our grandmother's names are ollie and lou ellen. My husband and I are very close to our grandmothers. I would really love for our second daughter to be named after the two of them but cant come up with any good names. I like the name Olivia for ollie. but I cant come up with anything for the lou or ellen. please help me come up with something so we can honor our grandmothers