Perez: Put mothers' names on marriage certificates
22 May 2014 Last updated at 11:09 BST
There is a space on marriage certificates in England and Wales for the name of the couple's fathers - but not for their mothers.
Feminist writer Caroline Criado-Perez, due to get married next year, has helped collect signatures for a petition to change the law, to allow mothers' details appear on the legal document.
She claimed the current law meant children of single mothers and lesbian couples were effectively told: "Sorry, your parents do not exist."