My mom gave up a baby girl for adoption when she was younger. To make a looong story short, she is in our lives and our family now. It is a wonderful thing and both my family and hers have melded into one. They spend every couple Christmas with us, her immediate family and her dad, her mom has passed. We call her aunt, her husband uncle, the kids are cousins. We were trying to figure out a good name for her dad. Both my kids gpas are papa, otherwise I would have choose that. My kids took very well to him, but ot just doesn't fell right that they call him by his first name. He means more than that to us. Like the other post, it isn't a big deal, I am just thinking outloud. WWYD in this situation?
Re: S/O name for "family" member
~Benjamin Franklin
DS dx with celiac disease 5/28/10
I think 'Papa 1stname' is appropriate if all are comfortable with it. Our neighbor is 'Grandma Sue' to my kids while my mom and MIL are Grandma (last name if they aren't there and we need to clarify).
Or maybe ask him what he called his grandfather as a child. My SILs mom's significant other asked to be called by the name he called his gpa rather than being called gpa as the biological gpas are called.
Ask him and see what he wants. When my grandfather and step-grandmother got married, there was still some bitterness to grandma and grandpa's divorce and whatnot so when the first grandkids were born, a few years later, we all called my step-grandmother by her first name. Well, I moved to Texas and had a family of my own but it felt weird calling her Ms. FirstName like we do other adults and the girls were confused just using her first name so we asked she what she wanted to be called. Apparently, she always wanted to be called Meme but just felt awkward changing it after we all grew up calling her by her name. My kids call her Meme and she tears up every time. Anyway, point is, ask him what he'd like to be called or call him what the other cousins call him. My kids call my dad Pop, my FIL PawPaw and my grandfather Grandpa. It works for us. I'm sure you'll find one that works for you guys.
ETA - My dad has a son from a previous marraige (my half brother), we always called his grandparents on his mom's side "grandma and grandpa lastname". It's kinda the same relationship, right?