It is known for the water-cure of Sebastian Kneipp ( \* 1821 , â 1897 ) , a catholic priest , who was living there for 42 years . Bad WÃ rishofen is a spa town in the district UnterallgÃ u , Bavaria Germany known for the water-cure ( hydrotherapy ) developed by Sebastian Kneipp ( \* 1821 , â 1897 ) , a Catholic priest , who lived there for 42 years .