What do you think of the name belladonna louisa?

Not crazy about Belladonna for two reasons, it's too long and it's the name of an herb used as a poison/medicine. I'm a nurse so anything that reminds me of work is usually out! Plus, it kind of sounds like prima donna, which is not something your child will want to be known as. Bella is very pretty and Louisa is very pretty. But all together I'm not crazy about it.