Third generation T1, diagnosed in 1996 at the age of 38. My mother was T1, at the age of 38 as well, and she had an older half-brother who was T1, though I don't know any more than that about him. Her sister, my aunt, developed T1 about five or six years ago, in her mid-seventies. Their father, my grandfather, was diagnosed in the 1920s and was an early insulin-taker - of his six older siblings, five died from diabetes.