We like this name and have sentimental reasons for being set on it.
however a relative lost a child who was named Harry. We don't want to steal this name in case it is wanted by others in the future who were closer relatives to him. (this isn't our sentimental reason for wanting to use the name Harrison, we actually didn't realise, duh! until wondering what we might nickname 'Harrison' after having our hearts set on it and referring to the baby as Harrison.)
Any ideas what we could use as a nickname? DH just informed me that Harris is a euphamism...??? I thought we could have gone with that.