Milton,

To begin with, why do you think that you are related to these
Kochs? What do your Y-DNA tests indicate?

>from the little that you write, it looks like all three of you are
Ashkenazi Jews.

We Ashkenazim are endogamous and we share much of the same genetic
cocktail. Therefore, total centimorgans are not so useful for
us. Largest segment are more helpful.

To get an idea of how meaningful these totals are, I analyzed the FF
data fo a cousin on which results I am now working. She had about
1980 matches with total strangers which I divided into ten
deciles. Below are the deciles and the total centimorgan ranges in
each of them.

107 - 157 ( 50 )
97 - 107 ( 10 )
90 - 97 ( 7 )
84 - 90 ( 6 )
78 - 84 ( 6 )
73 - 78 ( 5 )
66 - 73 ( 7 )
56 - 66 ( 10 )
43 - 56 ( 13 )
20 - 43 ( 23 )

As for a town in common, think regionally. Our ancestors often moved
within regions and some locations indicate the likelihood of
migration (think Odessa). When you identify a likely relative,
identify the regions and ask about migrations.

Itzhak Epstein New York, NY
<mailto:iegen@...>

At 11:42 AM 7/25/2013, Milton wrote:

I have done a FamilyFinder with FTDNA, along with two other people
whose families are also KOCH >from Jagielnica. We have not yet been
able to connect our families with a common ancestor.
The data reveals that one of them has 65+ cMorgans in common with
me, and the other has 87+.
In addition, when reviewing other "possible relatives", I noticed
that several people have over 150 cM in common with me. However,
there do not seem to be any names or towns in common with me in this
group of people.
How do I interpret the results of the two other KOCH families? Does
the data truly suggest a relationship, even as far back as several
generations?