We started to explore the effects of multiple Pressburg descent at a time when we thought Baruch Lichtenstadt was a close relative of Simon Michael Pressburg. This is not the case, but Julian's double descent from Simon Barrow of Bath the first table is interesting anyway. We previously reviewed the total autosomal matches using 12 Schoenberg kits and 9 Barrow Lousada kits as shown here in a chart with many fascinating details. The first table shows a subset of this, using Q-match which GEDmatch recommends for analyzing small segments:

To interpret this data, we note that John Griffiths is 1 generation younger than Julian and Ed Barrow. It may seem somewhat crude, but we normalise John's segments by doubling them. Our original thought was that - as shown in the 1st yellow number in the table - Julian might show greater Pressburg matches than Ed and John. The second yellow figure promptly disabused us. (The 3rd and 4th yellow figures echo this). Scott's wife, having Hungarian ancestry, has multiple connections with both of Randy's parents. The pink numbers show this. Avoiding the statistical noise we see with Randy and his sister, in what follows we look at their parents.

Because genealogy appears to tell us that Pressburg ancestry flows principally through Randy's father, we turn to him first. It will be seen that there is little to suggest that Julian, Ed and John match Randy's father differently. The picture emerging is thus that we do not see evidence of multiple Pressburg ancestry. Accordingly in view of the established ancestry of Baron Lyon de Symons and Samuel Pressburg the most likely explanation is that Baron Lyon de Symons was not the biological father of Tryphena Esther Lyon de Symons the wife of Simon Barrow of Bath.

Elsewhere we point to the indications of Baruch Lousada ancestry of Randy's mother and probably Randy's father as well. Thus above we may be simply looking at Baruch Lousada common genetics. On this basis, the question of the effects of multiple ancestry are now of interest in the context of descent from Baruch Lichtenstadt. The following table explores this.

In this table, we note the high match due to Ju and A being 1st cousins, and of course SW's elevated matches with Randy's parents. In addition to Randy's parents having Baruch Lousada ancestry, they would likewise have descent from Baruch Lichtenstadt. On the other hand SW whilst having Baruch Lousada ancestry might not have ancestry from Baruch Lichtenstadt who appears to have been a second husband. The second table does not conclusively settle these matters, but SW's matches do elevate the Barrow Lousadas compared with the Barrows, but this could simply be due to enhanced Baruch Lousada ancestry - as would be expected from the fact that SW matches the Lousadas relatively well.