YDNA results so far, based on a few number of participants, already show that there are many different family groups with the surname Cordes/Kordes. So far there are four distinct haplogroups...I1, with highest frequency in Scandinavia, I2a found in most of Europe with the exception of the Mediterranean and most common in the Adriatic Balkans, R1b1b2, the most common haplogroup of Northwestriern Europe, and E1b1b1a2, a Mediterranean haplogroup, most common in the Balkans and the Eastern Mediterranean across Sicily into Provence and Spain.

1. When first results came in we found that the three original particpants, including myself, did not match at all.  In fact I, Robert Cordes, was in a completely different haplogroup, E1b1b1a2,  from the other two who are         R1b1b2 .
2. The first match for the group was my match with two men of Mexican descent, Ruiz and Lopez, and another person named Schroeder from a village in Lower Saxomy 10 kilometres from my village.
3  A Vili Kordež so far does not match any Cordes surnames
4. The 'Spanish' Cordes does not match with the Cordes (myself) and Schroeder from a neighboring village to mine in Lower Saxony and the two Mexicans, Ruiz and Lopez,who do match me and the Schroeder
5. Subsequent Schroeders appearded who matched the original Schroeder and Robert Cordes.
6. A Peter Kordas with origins in Greece is of the same haplopgroup as the Schroeders and myself though a few steps out of match with us at 25 markers.
7. Several persons with maternal Cordes lines do no not matche any of us in mtDNA
8- One person with Cordes maternal ancestry from the same German village as me, Robert Cordes, is not even a distant match on autosomal Family Finder tests.
9. A new member to the project from England is a match at 12 markers with me, the Schroeders and the persons of Mexican ancestry.