I am the mom... my T1 is 4 years old. We have met 2 other little T1 girls about the same age, just by chance- one lives across the back alley and our two girls will be attending the same kindergarden class in Sept. I also know one T1 adult.
I think besides me, maybe one other person that my mother knows. Myself one other personally, a co-worker. Lots of type 2's though.
My mom knows at least three people in real life who live with type 1 diabetes (a guy about my brother's age (six years younger than me), a woman about my mom's age, and a retired man she knows from work)--and more important, she's friends with a CDE and Sharon(mother of my brother's friend with diabetes). When I was first diagnosed, Mom talked with Sharon (who has lived with his diabetes since he was about 12) about what she could expect.