If we don’t know why we inherited the Rh-negative blood factor, we guess. But today, thanks to scientific and genealogical study, we have options. I’ve always wondered if one of those options was that I descend from ancient Iranian Jews, because they have a higher percentage of Rh-negative than the rest of the population. Looking at a map, one can see that immigrants from Iran easily worked their way into Northern Africa and from there, into Iberia (Spain and Portugal) giving many with European roots this unusual blood type.
A little research on the migration patterns of Gypsies, shows us that their language contains Persian words, revealing that Gypsies were in Iran for quite some time. So, if you have the Rh-negative factor, you may indulge in a second theory. Your ancestors may have been Persian Gypsies because maybe there’s a connection between Persian Gypsies and ancient Iranian Jews. Iran was formerly known as Persia and both the Jews and the Gypsies have a history of wandering. No doubt their paths did cross.
Suellen Ocean is the author of Secret Genealogy – A How-to for Tracing Ancient Jewish Ancestry. Available here: http://www.amazon.com/Secret-Genealogy-Volume-Suellen-Ocean/dp/0965114082