I have DLOUHY in my extended family.
Emil DLOUHY, b. 1898, married Helen EARSA in 1916 in Iowa.
Emil's father was Joseph DLOUHY and his mother was Josephine VOTROUBEK. Helen's parents were Charles & Helen BENESH EARSA.
The BENESH's are in my direct line. They are from Bohemia, though I do not have a town name.
I know other DLOUHY researchers.