Editing Labels from a Contact List

I feel like this should be straightforward forward, but I can't figure it out. My contacts on my phone are listed as first name/last name. I want to make labels for my Christmas cards that say "The Smith Family" instead of creating labels from Apple contacts that will only come out as the person's name. So, instead of my friend Amy Smith on the envelope (using the above example), I want to be able to alter it to "The Smith Family." Does anyone know a simple way to do this? Contacts allow for so many customizations, but this is not one of them, and every year, I end up addressing the labels by hand. There must be an easier way!