Dave, I grew up near Chicago, so I would expect that grandson's name would very likely be Warshawsky.

This, supposedly a quote from Tim Ford, President of JCW:

An aftermarket empire

"J.C. Whitney was founded in 1915 by Israel Warshawsky, who launched it as Warshawsky Co., a scrap metal yard on Chicago's South Side. Two decades later, he launched the catalog side of the business."

"But Warshawsky's son, Roy, thought the family's Lithuanian roots might make landing customers more difficult outside Chicago, so Israel came up with a neutral name, J.C. Whitney."

"Both entities were really one, but they kept both names until 1997," Ford says.
--
Art Benstein near Baltimore