As the manifest of Edward gave his Nationality as Moravia, then you likely should post to the Czech board. After WW I, 1918, Moravia and Bohemia formed the Czech part of Czechoslovakia.
His former residence may now be Přívoz (aka Oderfurt) located 169.2 miles E of Praha http://www.mapquest.com/?le=t&q=49.8508%2C18.2599&zo...
Olderberg is only a few miles from Privoz
The best place name search tool is found at the link belowhttp://www.jewishgen.org/communities/loctown.asp
Also note the record below which gives the more likely Slavic spelling as Eduard
Name: Eduard Koncakovsky
Estimated Birth Year: abt 1860
Place: Galveston, Texas
Source Publication Code: 206
Primary Immigrant: Koncakovsky, Eduard
Source Bibliography: BACA, LEO. Czech Immigration Passenger Lists. Hallettsville, Tex.: Old Homestead Publishing Co. Vol. 2. 1985. 195p.
The best place for your post is to the Czech board, as any records will be found in Czech Republic