Blackbourn Multiple births.
Thomas Blackbourn and Sarah Forster had triplets that died and twins that lived.
"In every generation there was many twins and some times triplets. My grandfather was a twin and had brothers that were twins and sisters that were twins. That is how I was sure I was on the right track when I started looking. Find Blackbourne twins no matter how the Blackbourne was spelled and you had found a connection."
"My great grandmother, gg granddaughter of Thomas Blackbourn, died in childbirth trying to deliver twins."