Preterm birth
James Elgin Gill (born on 20 May 1987 in Ottawa, Ontario, Canada) was the earliest premature baby in the world, until that record was broken in 2014. He was 128 days premature (21 weeks and 5 days' gestation) and weighed . He survived.
Pregnancy from rape
Many of the youngest documented birth mothers in history experienced precocious puberty and were impregnated as a result of rape, including incest. The youngest, Peruvian Lina Medina, was impregnated when she was four and had a live birth in 1939, at age five.