That is the proper spelling of the compound word "frontiersman".
The singular possessive form is frontiersman's.
James Smith - frontiersman - was born in 1737.
Bill Gates - frontiersman - died in 1935.
Bill Gates - frontiersman - was born in 1860.
Jesse Hughes - frontiersman - died in 1829.
American frontiersman
Robert Campbell - frontiersman - died on 1879-10-10.
Robert Campbell - frontiersman - was born on 1804-02-12.
The Bold Frontiersman - 1948 is rated/received certificates of: USA:Approved
a man who lives on a frontier.
a man who lives on a frontier.
The Fighting Frontiersman - 1946 was released on: USA:10 December 1946 Denmark:19 March 1951