In comparing these two set of data, one hundred years apart, we see surprising little variance!   Of the top 20 male names in Lomza in the 19th century... 14 were still in the top 20 in Israel in 1991, many in similar positions. Of the remaining six, two were transformed from Yiddish to Hebrew: Lejb to Yehudah, Hersh to Tzvi; and four Yiddish names dropped out: Ber, Wolf, Lejzor, Zelman, to be replaced by Shimon, Beniamin, Menachem, and Michael.