Every 20 generations equals about one million people.
Every 20 generations could equal over one million different people. However, due to the custom of past generations marrying within the family it doesn’t really work out that way. You would always have the numbers below for each generation, but some of the people would be duplicates as when 2 first cousins marry, they share the same grandparents.
If you figure 30 years per generation, which in my opinion is more realistic, 20 generations represents about 600 years. MaryCarol
You Have…..
2 Parents
4 Grandparents
8 Great Grandparents
16 2nd Great-Grandparents
32 3rd Great-Grandparents
64 4th Great-Grandparents
128 5th Great-Grandparents
256 6th Great-Grandparents
512 7th Great-Grandparents
1,024 8th Great-Grandparents
2,048 9th Great-Grandparents
4,096 10th Great-Grandparents
8,192 11th Great-Grandparents
16,384 12th Great-Grandparents
32,768 13th Great-Grandparents
65,536 14th Great-Grandparents
131,072 15th Great-Grandparents
262,144 16th Great-Grandparents
524,288 17th Great-Grandparents
1,048,576 18th Great-Grandparents
