Mosser Mains is a hamlet by Mosser Beck in the Allerdale district of Cumbria, located just over 3 miles south of Cockermouth, in the Civil Parish of Blindbothel. The Church of St Michael has a history going back to medieval times. Historically, Mosser was a township in the ancient parish of Brigham in Cumberland.
MOSSER, a chapelry, in the parish of Brigham, union of Cockermouth, Allerdale ward above Derwent, W. division of Cumberland, 4½ miles (S.) from Cockermouth; containing 107 inhabitants. The living is a perpetual curacy; income, £44; patron, the Earl of Lonsdale. The chapel is dedicated to St. Philip.