I'm Nannie, never wanted to be anything else. My DiL's mum is Grandma. Both my mum, and MiL, were Nannie to my children (followed by first name to differentiate), and both of my GMs were Nannie to me, and all the other GC in our family. I also had both of my great-grandmothers when I was little, and they were also Nannie, one followed by first name, the other by surname, because that's what everyone else called them. I guess it's a family tradition, and it wouldn't have felt right to me to be called anything else. Of course, if my DGC eventually decides to call me something else, I'd be happy with that too. I don't see why some people get so hung up on what they want their GC to call them (my DiL's mum deliberated for months about what she wanted to be called). Or why some people feel the need to make comments about what other GMs choose to be called. Each to their own. Although, I do think 'Wow' is a rather unusual choice ;-)