The discovery of the J.Michael Huber connection on Chr#13 prompted a search for more connections; that search was successful. Of course, when you do a search on Ancestry you can come up with just about anyone you want in the list of matches; just because J. Michael Hoover is in the pedigree of a match doesn't mean he is necessarily the one you connect with. I use two criteria to establish the likelihood that the match is valid: 1) Are there shared matches that also lead to the same person? and 2) Are any of your cousins from different lines also a match?
For item 1), the first thing to do is to use the search utility to look for key surnames and placenames in the trees of the shared matches. In some of the J.Michael Huber matches, this quickly identified Hoovers/Hubers in Dauphin Co., PA. Also, if the search doesn't turn up anything, ProTools is extremely helpful in identifying those who are closely related, facilitating the search of the the pedigrees for common ancestors.
For item 2), having a large number of cousins identified in the Ancestry database is essential. SA/SO/LT/BD cousin matches were all in my John Jacobs, Jr. line, leaving open the possibility that his wife's line sourced the segment. Though having BD in the list meant the probability of the segment coming from John Hover was 25% (great for someone born in 1731!), it was nice in some cases to see that Daniel Jacobs descendants also shared the match (as they do on the Chr#13 segment).
Having access to view the matches of key individuals is also helpful. Ancestry gives you information for whether your matches are paternal or maternal, making it easy to eliminated invalid matches from the irrelevant side; it does not provide a means of eliminating invalid paternal matches. For Chr#13, I have access to view ALL of the matches (even those < 21cM) for each of my cousins having the match. If a shared match is not in the match list of all of the cousins, it does not share the same segment.
Of course it is also very helpful if one of the matches you are investigating is willing to go to her DNA settings and give you permission to view the all of her matches. Check the profile of the match and some of them include in their profile picture "Willing to help". On Chr#13, one of the matches did this for me and it allowed me to confirm that J.Michael Huber descendants were among the < 21cM matches as well as the ones that Ancestry allowed me to see > 20cM.
So, how about those new connections to J. Michael Huber? In the figure below, you see most of the ones I've identified. Jacobs cousins are in the left column and column headers across the top identify the J.Michael Huber descendant and how they connect. Colored box outlines identify groupings of matches have at least some common shared matches (indicative of possibly sharing the same segment).

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