The new 9-part series will see stars like Claire Foy and Bear Grylls discover the truth about their ancestors.
The full celebrity line-up has been confirmed for the festive special.
The podcast hosts are already parents to another boy.
The TV fundraiser is returning in November.
It's a rare year that Anton is fully booked until Christmas.
The comedian wanted to keep it friendly instead.
It was an even divide over who deserved to go through to the next round.
The couples are mixing things up this year with some unexpected matches.