It may also be worthwhile to understand the Pressburg ancestry a little more. One way to do this is to examine the Schoenberg Barrow DNA segment matches. This has let us identify which of the matching segments that Julian, Ed and John have with Randy and his sister have their origin with Randy's mother or father - that is, which matches with Randy and his sister are complemented by matches with Randy's parents:

We note that Randy's parents have a significant total match of 128.4cM with each other, and thus they are related to each other. Generally, Randy's parents make independent contributions by way of the segment matches of Julian, Ed and John as shown in the chart. We observe that:

1. The Cr17 match is interesting; it may represent family genes inherited via Randy's mother. There is a likelihood of false positives of course, as this overlap has not been subjected to Q-match.

2. One of the matches not shown above (because Randy's parents were not present in it) is at chromosome 21 where we first found Randy's matches with Julian, John and Ed (noted here) as elucidated here. This acquired greater significance since the 21st chromosome segment 36,873,163 - 37,833,931 appears to be a 4th Lousada indicator site. A later Q-match comparison on GEDmatch in fact showed a small sub-3cM match on the 21st chromosome (positions 36795712-3757692) between John, Julian and Randy's father. But now as of 4 Mar 2024 Q-match (3cM, Q=7) does not show Cr21 Schoenberg matches with Julian, John and Ed but only with Jeannine (though this is not supported by a parental match suggesting a false positive). Simultaneously, GEDmatch via Q-match has ceased to allow sub-3cM matching. In the end the chromosome 21 matches - despite all this activity - are now regarded as insignificant in terms of a possible connection between Baruch Lousada and Pressburg genealogies. But - see point 4 below - Cr21 still figures in the possible Lousada genealogy of Randy's mother.

3. At the chromosome 8 Lousada indicator, the 2 individual Schoenberg matches are likely to be false positives, while at chromosome 5 there are no matches. Thus the Cr5, Cr8 and Cr21 Lousada indicators all have zero significance in the Schoenberg context.

4. But at the Cr2 Lousada indicator, using Q-match set at 3cM, with Precision = 7, we find matches not evident in the diagram above. GEDmatch continually tweaks its methodology for small matches, and at the time we generated the above data these chromosome 2 matches were not detected. Now, these matches shown below between Randy's mother with Julian, Jeannine and the Papacin-Lousada descendant TPhelan are hard to ignore. (The match shown below involving Randy's father is discussed below). The 3 matches suggest genealogical enquiry will be worthwhile to see whether Randy's mother has Baruch Lousada ancestry. Of course, if she does have Baruch Lousada ancestry, the obvious source would be the wife of Baruch - perhaps as shown here. Naturally, we compared indications of Randy's parents' Lousada ancestry using Q-match as shown here - and as will be seen, Randy's mother shows 2 indications and Randy's father shows nil at the Precision default = 7. If we move to a Precision level of 3 we pick up a Cr8 and a Cr21 indicator for Randy's mother, but we find complications at Cr2 and Cr21. Randy's father's Cr21 match (with JG) appears to be a false positive from the viewpoint of Lousada genealogy in view of the absence of a match between Randy's parents under these conditions. The Cr2 match between Randy's parents does not appear at Precision = 7 as indicated in the following chart, but Precision = 3 presents a challenge since under these conditions there is a 3-way match between Randy's parents and TPhelan! It would seem that we have a case here of a strong triple occurring at random - with one Lousada link (Randy's mother and TPhelan), and 2 false positives.

5. We have explored the Pressburg ancestry of Scott's wife and MWaas (see here) but no obvious pattern emerges.