Florence got pregnant the following year, and gave birth to twin girls on October 4, 1958. Gillian and Jennifer were identical twins, but they had different birthmarks. Jennifer had a birthmark on her waist that matched a birthmark that Jacqueline had. She also had a birthmark on her forehead that resembled a scar that Jacqueline had.
The family moved to Whitley Bay when the twins were three months old. Two years later, the girls started asking for toys that had belonged to their elder sisters, despite never having seen the toys before. After the family returned to Hexham, the twins, despite never having been there, pointed out landmarks their older sisters had known. They also began to panic upon seeing moving cars, shrieking, “The car is coming to get us!” After they turned five, their memories of their previous lives faded, and they went on to lead normal lives.