Looking for Taub Danzig Margoluies from Brody Ukraine Formely Austria

Moses Danzig and Luisa Margoluies are my GGrand-Parents late 1800 and early 1900.2 of their children; Rudi and Karl Danzig moved prior to world war II. Rudi moved to England, We do not know where Karl moved.
My Grand Father Hermann (HERSCH) Taub married Sali Margoluies (Danzig?) daughter of Moses and Luisa.
Hermann was also from Brody and died in concentration camp during WWII.I beleive he had brothers and sisters. I do not know the name of his parents. But one brother name was David Taub.[i] He sent his daughter Anita (TAMAR) to Israel before the war. She had 3 children and lived in Nahariya in north Israel.

[i]Would you have any information regarding my ggrand-parentsfamily (Danzig-Margoluies) and grand-father family?( TAUB) Parents, brothers,sisters.