I have Vol 3 in front of me.
Page 212 mentions a Aryeh Zeev Wolf who lives in jerusalem and is married to Yehudis, daughter of Rabbi Berel 9Yissochor Dov) Knopfler & Chaitsche Margulies
No further details given
Page 754 speaks about a Zeev Wolf Landau, a great-grandson of the famous Rav Yechezkel Landau, the author of the sefer Noda Biyehuda, whilst page 870 discusses R Zeev Wolf Grunfeld living in Bnei Berak. These two seem to have entered the index by virtue of their first name.
As such it appears Vol 3 is not going to assist you in your search.
I hope the other two volumes will.