We know this Langton group are from Yorkshire because the family tree has been traced back there. We know this family isnt from Langton near Malton because we already have a dna profile for that village, that is different.
In tracing this family we note that one of the earliest dates is a marriage in North Allerton, which is right by the other Langton village in Yorkshire. Therefore, it looks likely that this family is from that area, and that Langton village.
We would like dna from other Langtons with a link to the area, or who have remained static over the centuries and perhaps still live in or near the Langton village there. We would expect the dna to match and belong to this profile group.