David, Sarah Blackmore was my great-great-grandmother, her daughter, Anna Purnell, was my g-g. About a year ago, I found the family tree you had posted, and I was absolutely blown away. I have a picture of Anna's brother Owen Purnell with family members, but my late mother knew nothing about them. Anna's son Robert P. Collins, my grandfather, was an only child, as was my mother, so this is the first contact I have ever had with the Purnells. I believe we are third cousins once-removed. I believe some of the relatives died in Sunderland where Anna lived.