I have only found some info about Frank Roboch in Canada:
https://familysearch.org/pal:/MM9.2.1/MCDN-JKSFrank Roboch, b. 1884, m. 1922 Frank, Alberta, Canada, d. Aug 1960 Canada
wife: Anna Poch nee Mullar, b. 31 Oct 1889 Kopisty-Julius, Czechoslovakia, d. 22 Dec 1964 Blairmore, Alberta
children: Edward Roboch, b. 1930 Frank, Alberta, Canada, d. 1963 Calgary, Alberta, Canada
Unfortunately, Libušín birth records for 1884 year are not online yet:
http://actapublica.eu/matriky/praha/prohlizec/12227/