Mosterton is a village and civil parish in Dorset, England, situated in the West Dorset administrative district approximately 3 miles (4.8 km) north of Beaminster. In the 2011 census the parish had a population of 604.
The village's name derives from Old English and means the thorn tree belonging to a man named Mort. In 1086 it was recorded in the Domesday Book as Mortestorne.
For more information, see the EN Wikipedia article Mosterton.
Dorset Research Tips
One of the many maps available on the website A Vision of Britain through Time is one from the Ordnance Survey Series of 1900 illustrating the parish boundaries of Dorset at the turn of the 20th century. This map blows up to show all the parishes and many of the small villages and hamlets. The internal boundaries on this map are the rural districts which are indicated in the "See Also" box for the place concerned (unless it is an urban parish).
The following websites have pages explaining their provisions in WeRelate's Repository Section. Some provide free online databases. Some are linked to Ancestry.