I have a James Jindra in my family tree, that was born in 1860 in Austria and later became Bohemia. His father was Jan "John" Jindra who married Anastazia "Anna" Ptacek. They immigrated to the US in 1873, with both parents and 5 siblings, Michael, John V., Metei "Matthew," Albert and Frank J.
The Czech spelling of Jindra was Jeinera.