You can look them up yourself at the NSDAR site, here:http://services.dar.org/public/dar_research/search/?tab_id=0
Read the introductory material, then click on "Ancestors" to get to the search box.
The DAR maintains lists of persons under whose service women successfully joined DAR as their descendants. DAR does not have lists of all who served in active duty or as patriots of some type.
If you do not find your persons listed but have thoroughly documented active-duty or patriot service, and if you have well documented your descent from them, then you can work through a local DAR Chapter to make sure the "ducks are in a row" and documentation complete, if you wish to join under their service.