This is on a similar line to the Theo / Theodore topic. I want to use the name Connie but I know a lot of people think the full name should be used on the birth certificate. However, we have quite a long surname that we always have to spell out and my dh has always said our children should have names which don't have to repeated 100 times. Constance with our surname would be a real mouthful and I know we'd never use it, so what's the point!? Would registering the child as Connie be ok?