Space Western has these relationships to other tropes:

parents kids shares a parent with:
Science Fiction
The Western
parent child
Science FictionSpace Opera
''Planetary Romance
''Cyber Punk
''Steam Punk
''Military Science Fiction
''Science Fantasy
The WesternWeird West
''Cattle Punk
''New Old West
''Cowboy Episode
''Twilight Of The Old West
''Dawn Of The Wild West
You'll need to Get Known if you want to add or modify these relationships.