Resources Immigration to Pennsylvania Prior to 1800: A Timeline of Who Arrived and from Where Knowing when a specific ethnic group arrived can help target research in records. Usually DNA is your first clue as to where (and when) to look.
Resources Exploring Your Pennsylvania Roots with AncestryDNA's Genetic Communities Your AncestryDNA genetic communities combined with your other records can create powerful evidence of relationships and family trees going back hundreds of years.
Podcast Target Your Research with Genetic Communities AncestryDNA has the largest DNA database in the world for genealogy. Their data on genetic communities can help you target your research if you take an extra step with it. I explain that step in this episode.