All I can say is I took a dna test, and have Briggs for cousins. Seems I’m a direct great grandson of Arthur Warren of Weymouth Mass.
Were you able to find the boat Arthur took to get to the colony? It doesn’t seem Arthur or Mary were on any of the more well known boats. Seems he might have caught his mechant cousin’s boat who traded a lot with Calais? I think that boat may have been the “Abraham.”
Probably should ask for some help confirming sources as well :-)