Where does “Flandrynish” come from?
Flandrynish (Manx) comes from Manx Flandyryn, from Dutch Vlaanderen, from Middle Dutch vlaendren, from Old Dutch flāmdra-, from Old Frisian flāmdra-, from Proto-Germanic flaumaz, from Proto-Indo-European plew- — to fly, flow, run.
Ancestry of “Flandrynish”, step by step