A lot of people have asked over the years how to clean up duplicates in their Ancestry Member Tree. If you are one of the people who discovered that your mysterious distant cousin Mary was really the same person as Uncle George’s wife Mary, then you’ll be happy to learn that we have a solution that makes it simple to merge two duplicate people without losing any of the relationships, facts, photos, or stories you’ve entered.
Select one of the duplicate people in your tree
Go to the person’s overview or profile page and from the “More options” menu, select “Merge with duplicate.”

Select the other duplicate person
On the left side of the page, you’ll see the person you’ve already selected. On the right side of the page, you can select the person’s duplicate in a few ways.

Select the facts you want to display

After you’ve chosen the duplicate individuals, they’ll be displayed side-by-side so you can compare the two and choose which facts you want to display for the merged individual.
Already, I’ve been able to clean up some of the messiness that existed in my own tree by using this new feature and hope it helps those of you who have been looking for a solution for merging duplicate people in your own tree.
Will this work across two trees, when it is found that they join?
Thank you so much for this.I have two sets of twins in my tree who married brothers and also a few cousins.Tree looks so much better now.
Kind regards to all the team.
Maddy.
Will this work for married cousins, for instance my Grandparents on my mothers side are cousins. And on my dads side His Mums Brothers Granddaughter is now my Dads second Wife.