I have 3 
My mum's name is a country and one of my middle names is the capital city of that country (think Australia/Canberra, but not!).
It is atriciously 70s, but i am actually quite proud of it and it causes great hilarity at dinner parties when we all insist on calling each other by our middle names (Clare really doesn't suit Hortense, etc).
The other two middle names are from grandparents/great-grandparents: Josephine and Lilian.
I love all 4 of my names.
So, I'd say choose 2 names rather than none.