You’ll start seeing some changes to subscription genealogy website Ancestry.com’s Basic search form over the next few weeks.

Ancestry.com says its users asked for more flexibility in entering place and date information: What if you don’t know when and where an ancestor was born—but you do know he lived in a certain place at a certain time?

So you’ll soon be able to enter a place into a “Name a place your ancestor might have lived” field. That will search Ancestry.com records for any life events—birth, residence, marriage, military service and death—that match that location. User testing revealed this moved relevant matches up in search results, says Ancestry.com product manager Anne Mitchell.

The new form also adds a “Calculate it” button, which will estimate a birth year based on when your ancestor lived in the place you specify.

If you do know when your ancestor was born, married, died, served in the military or lived someplace else, you can click an “Add an event” link to add one of these life events and the place and date of that event.

Finally, the links to clear the form and show the Advanced Search form have moved to the bottom of the Basic Search form, next to the Search button.

The changes will begin rolling out to some US members today and become available to all users over the next few weeks.

Visit Ancestry.com’s blog for more information and to see what the new form looks like.