Newbie here. Did 23&Me and Ancestry.com so far.
39% (and most): I2a1b2a1 S17250 aka. Y=P204
With these subs that I still know very little about
According to family history: the First known ancestor (supposedly) was Stanislaw Hosszúmezey (Dolhay) c 1330-1366 Vovoide of Beregh County, in the Kingdom of Hungary. Later family members got nobility type papers and served in various military, judicial, and administrative capacities in Northern Transylvania, Slovakia, Western Ukraine, and later Buda and Vienna.
I was born in Budapest, Hungary, but only 2 gen away from Transylvanian birthplaces of Paternal Grandparents.
Both the the Polish and the Croatian connection with I-Y4882 come as somewhat of a surprise and I'm trying to connect the dots with all of it. I guess it's entirely possible, given the constant movement and mixing in the region, and I'm sort of wondering if one of my foremothers "had stepped off the reservation sometime in the past"... and (Family) History is only about papers , legends, and some archaeology, but genetics you can't really argue with...
I think you do not have enough knowledge to understand results.
First off all you cannot be 39% S17250, you can be only positive or negative on S17250, in some rare cases there is "no call" for a SNP which means that test did not read the position.
The second thing is that you cannot in same time be positive on 3 parallel branches of S17250 (I-Y4882 I-Z16971 I-Z16983). Those branches have common ancestor that lived at least 1850 years ago. You can see it on the tree https://www.yfull.com/tree/I-S17250/
So if you are positive on one of three branches you named here, automatically you are negative on the rest two.
I know that all of it might be confusing for newbies.
Have you taken recently 23andme test?
Is your test V5 chip that test S17250?
Could you see what is your Y-haplogroup results at 23andme?
Is your known paternal line from Beregh county Hungarian or Slavic? Name Stanislaw is a slavic name.