The farm Frøystein by the Ulvik fjord is commonly called Fryste. In 1614 the name was written Frøstemb – an obvious Danish influence – and the form Frøsten was used up until the land register in 1886 and 1907. It is probable that the name of the farm originally was Frystvin; a vin-name. Thus it has no connection with neither Frøy (Norse fertility god) nor stein (stone).
In one of the frame-built haysheds at Nottveit, at holding No. 3, we discover that several of the staves have a medieval look, with large dimensions and carefully rounded edges. According to tradition, it was the farms Nottveit and Mostraumen that supplied the timber for the stave church at Mo, and it is not unlikely that these farms received the old timber in return when the new church was erected there in 1593.
Tthe Otterstad farms lie in the innermost part of Mofjorden, on the northwest side of the river. The row of stave-built boatsheds that belong to the farm were probably constructed a little after the middle of the 1800s. Both here and on the Mo side, the boatsheds were important storage places at the seashore; wood and other farm products intended for the town; corn and merchandise in return.