הרב המופלג המאור הגדול מוהר"ר יצחק אייזיק הלפרין, אב"ד ור"מ טיקטין וצויזמיר - The identity of his wife's father

Rabbinic literature states that his wife's father was:

Rabbi Hirtz, of Satanow

But one source says that this is a mistake, because his wife's father was:

Mordechai Halevi Segal, הי״ד

That he was the son of The Taz.

I think they got confused, because his grandfather (who had the exact same name)

His grandfather profile:

R' Isaac Halpern, A.B.D. Tykocin

Therefore, I believe that indeed the father in low of:
יצחק אייזיק Heilprin

There was Rabbi Hirtz of Stanow

Does anyone have information that can help understand what the correct information is regarding his father-in-low identity?

      TIA