I did a workshop on Double match Triangulation at the Orlando Conference. I
find it is very useful in helping me sort out possible matches and also from
which side they match. The programme only costs 40 US dollars for a
lifetime use and can be found at
The following address is also useful for learning about Triangulation-
It is possible to triangulate using Tier 1 tools on Gedmatch but GEDmatch
only gives you some of the triangulations with some of your matches. DMT
gives you *all* of your triangulations with one specific person.
Louis Kessler who created the DMT software is very helpful and reading the
help notes on the site gives one a good idea of how to use the programme.
Arlene Beare UK