Synonyms for Marsh (same or very similar meaning)
WordNet sense 1 (United States painter (1898-1954)):
Reginald MarshWordNet sense 2 (New Zealand writer of detective stories (1899-1982)):
Ngaio MarshWordNet sense 3 (low-lying wet land with grassy vegetation; usually is a transition zone between land and water):
fen, marshland, fenland, fenFrom the ODE community, based on WordNetadd/edit