My 10th great-grandfather is my 9th great-grandfather?

I was stimulated to write this post by reading Lara Diamond's blog today which has the clever title: My Pedigree Has Collapsed! I figured that anything the Ashkenazi could do us WASPs could  do better. Nothing like a little ethnic rivalry. The other granddad of my three Dowell grandsons is Ashkenazi.

According to my RootsMagic software, my immigrant ancestor Richard CURRIER is my tenth great grandfather. But wait he is also my ninth great grandfather:

Yes, Nathaniel Currier of Currier and Ives fame was a 4th great-grandson of immigrant Richard. Thank you for asking. But back to my main point.

 If you insist in trying to read all the details, your browser may open a somewhat clearer image if you click on each page. All the individuals below the line of type projecting to the left halfway down each page are identical in each line. Only their generation number is different.

So one could theorize that I should have inherited some atDNA from these early Puritan ancestors since my pedigree collapsed under their weight. But that was a long time ago and many generations to pass the segments down. By now they would be well traveled, well worn and often recombined. Thank God for those thorough and well preserved New England vital records. As a result I know that my 10th great grandfather is also my 9th great grandfather is also my 9th great grandfather.