Some things Google found for "merso":
Merso is an unusual to rare last name. Merso is a rare first name. Merso Art School in Greece. In Latin merso means I immerse. Merso Soprano is the name of a place in Italy.
Word derivation for "forest" :
Hungarian = erdő (which I transliterate to erdö)
Finnish = metsä
Samgur = mersö