Hi Castoff!
I go by just Tina also. I did meet a Tina Sue once, thought that was a cool name. I guess I'm named after the Perry Como song"Tina Marie." When I was a toddler people would ask me my name and I'd go- Oh Oh Ah Ah! That end part of the song Oh OH Ah Ah Tina Marie!
I haven't meet to many other Tina's myself. My dd's Kindergarten teacher was a Tina.
My mother was trying to give me the same initials as my dad JMH. But he said no to Jamie, cause he is James and so is my bother. Mom liked Jill and Jane but thought kids would make fun of those. So she was looking in the baby name book and came across Tina and liked it. My dad, brother and I all have M for a middle initial. Lucky I didn't get "Marvin" for my middle name!
Do people say to you, "Tina, short for Christina?" routine? I do have a cousin Christine, but we always called her Chris.