Hi Stephanie,
Thanks for reaching out , the more folks that add, ask for , question conclusions and share research data wrt to the Ewing Clades, the more dots will be connected--and all of us will benefit.
First let me make sure that you recognize that David's Y chromosome's DNA (yDNA) will not be of any benefit wrt connecting him to Sidney Ewing.
The Y is passed from father to son, generation after generation and never recombines (mix and match) with the other 22 1/2 pair of chromosomes. You probably already knew that, but I want to make sure we are departing from the same depot of understanding. It is about 59 million base pair (nucleotide) long ( the smallest of the chromosomes--the puny one) and the only way it changes is an occasional mutation (SNP, single nucleotide polymorphism ) every couple of generations or so. That means that David's Y is essentially identical to his 20th GGGrand Father's. He probably has something close to 8-15 mutations that his 20th great-grandfather did not have. Those SNPs (mutations we call downstream SNPs). So the 8-15 differences out of 59 million , most folks would call identical. Therefore that makes the Y an excellent research tool for verifying/identifying paternal lineage, but wont help with connecting to Sidney.
Now, the first 22 pair of the 23 chromosome pair are the non-sex chromosomes and they do mix and match ensuring each of us are unique--but nearly identical. 95% or there about of our DNA matches everyone else, we have two feet , two eyes, two nostrils, two thumbs, two brain hemispheres, two lungs, and a bunch of other duplicate body parts and functions.
This DNA we call autosomal (atDNA) and it can be a very useful tool in verifying/identifying ancestors, cousins (1st to 5th or more) , uncles/aunts from 10-15 generations ago to our parents siblings. It does require training, practice and tons of discipline. The most popular labs are Ancestry, MyHeritage, 23 and me, Family Tree DNA and a few others. Your success in using atDNA as a genealogical tool is a function of four primary elements: 1. finding matches; 2. matches having useful genealogy, 3. matches willing to share/communicate and 4. a logical mapping regime
#1. Finding Matches -- Ancestry.com will provide you with the highest matching probability, but they do not provide the results in a format that supports #4's mapping requirement--however, you and your matches can download results and upload to GedMatch.com for free and that will find more matches and give you the data that will allow for mapping.
#2 and 3 Useful Matches. ---A few years ago, nearly everyone who had atDNA were solid genealogists , had solid trees and genuinely want to help each other. However, after Ancestry's marketing "Trade your Kilt for Lederhosen" , folks just wanted to find their "ethnicity". So be prepared to become frustrated occasionally when you believe that you have found the match that will answer all of the mysteries of the universe, and they do not have a tree, and/or will not respond to any of your messages or emails....
# 4 Mapping. This is way too complex to cover here, but the easiest entry level tool for mapping is DNA Painter.com. Watch YouTube videos , ask questions on forums and FB groups and email me
Your kit # above is from FTDNA and looks very similar to GedMatch.com's kit numbering system. When you order atDNA , Ancestry is my recommendation and then download and upload to Gedmatch.com (free), MyHeritage (sml fee) and FTDNA (sml fee) , so that you can maximize the potential of "good" matches......and obtain useful data that can be "mapped". After uploading to Gedmatch.com join the Ewing Ancestor atDNA Project, the project that you joined at FTDNA is focused on Y DNA, (Ewing Surname---father to son Ewings DNA)
I hope my response is clear, I know that it is not concise.
DG Ewing Sr
Admin for the Ewing Y DNA Project