No, I researched that awhile back. Soro’s son is married to a woman whose maiden name is Schiff, but she is apparently not related to the CA congressman.
It appears that the son of Soros is/was married to a sister of Shifty!!!!! Who would expect anything connected to either of those two creeps to be straightforward?
https://www.usapoliticstoday.org/adam-schiffs-ties-george-soros/