 Her birth is undocumented, but in "A Memoir of His Life" (1818) by her brother Dr. William Charles Wells, who was born in 1757, wrote that Helena was the youngest surviving Wells child, which means she was born no earlier than 1758.On the other hand, Helena's sister Louisa Susannah Wells (born in 1755) recalled in The Journal of a Voyage from Charlestown, S.C., to London (written in 1779) that at age ten she helped take care of two sick infant sisters.If one of these infants was Helena, she might have been born around 1764.