Since Bob and Viv's remarriage in 2006 they had wanted a child. When Viv finally found out she was pregnant, Bob did not want another child because of the death of his daughter Dawn. She was ready to have an abortion when Bob stopped her. Cathy and twin-brother Heath are born on 9th February 2007 in a shed on the moors, hence their names, delivered by village veterinarian Paddy Kirk.
They are baptised in May 2007, with nine godparents; Terry Woods, Marlon Dingle, Paddy Kirk, Donna Windsor-Dingle, Jamie Hope, Roxy Lockhart, Emily Kirk, Eddie Hope and Kelly Windsor. In July 2007, they are entered in a "Cute Kids" competition, which Heath wins.