>>33007
>>33014
>>33039

>some noble family descended from Jews

It can be just a part of historical myth.

Religion, especially in past, wasn't separated from history, and concept of tracing your lineage from some religious figure was very popular. It is like translatio imperii applied to heritage.

For example, Romulus and Remus (both already mythological) were traced as descendants of Aeneas and so they were noble Trojans. Of course this wasn't original story, just a late influence of Greek culture.

Same with Christianity. When mainstream changed, people started to rewrite their founding stories to conform the new "true" history that was written in the Bible. So, Christian nations started to trace their history from some tribes of Israel, noble families - from famous biblical people etc.

It was pretty widespread thing, sometimes even too crazy:
https://en.wikipedia.org/wiki/British_Israelism
https://en.wikipedia.org/wiki/Japanese-Jewish_common_ancestry_theory