1) We each have 16 great-great grandparents. How did their birth and death years vary? How long were their lifespans?
2) For this week, please list your 16 great-great grandparents, their birth year, their death year, and their lifespan in years. You can do it in plain text, in a table or spreadsheet, or in a graph of some sort.
|Lodema, the oldest of my gg-grandparents|