Mano KRONBERGER - Query on Mother

Here is his death certificate, could not find anything on jewishgen though I didn't do a full deep dive. I don't see two mothers though.

https://www.familysearch.org/ark:/61903/3:1:33SQ-GPTW-S6M2?view=ind...

The two above profiles have no source documents attached, one is sourced from a my heritage website, which I don't consider an official source. Women had both Hungarian and Jewish names, so could her jewish name had been Szali/Sara and her Hungarian name Rozalia, it's a possibility.

Sometimes the last names were misinterpreted / I've seen Bleuer written/ interpreted as Blener. I'm leaning towards yes, but I'm not 100% comfy saying it definitively. Adolf ( the son ) also has Breiner, the son's Ignac marriage notation has "Szali Breiner" . I'm not having the easiest time finding definitive sources on jewish gen or newspaper sources.

I just found Jakab's death certificate that lists his wife as Rozalia Breiner. so they seem to the same person.

https://www.familysearch.org/ark:/61903/1:1:6JYP-BQT6

Re
Rosalia Kronberger being Sara /Rozalia/Szali Kronberger

I have frequently found people called Rozalia using names that have been shortened to Sali.or Sari. The Sara could easily be a transcription error for Sari or Sali
What I have not found is the surname Breiner ever reappearing as Breuer.

There is no evidence that he had another wife and I have looked in various sources thoroughly. Could the other manager ( Deri ) provide sources?