With the little you have to go on, check the web site of János Bogárdi where he has computerized a "yellow pages" directory of shopkeepers and craftsmen of old Hungary of year 1890. The web site is at http://www.bogardi.com/gen/g079.shtml
Unfortunately, the name index does not appear to work right now, but you can enter the name Waltersdorfer into the search field. The result are 4 entries, of which two were in Budapest, one in Zala and one in Vas county. As you likely know, there are no Waltersdorfers listed in today's phone book of Hungary. Therefore, the four Waltersdorfers of 1890 could well have met your criteria of being from Western Hungary near the border with Austria and being Jewish. Many Jews moved to the cities such as Budapest and Vienna in the late 19th century.
To get the actual places where the two Waltersdorfers of Zala and Vas county lived in 1890 as well as their professions, you would need to pay a subscription fee .... the Bogárdi web site explains how to.