Roy and Cousin Brendan

I have been digging away into the early property records and now into the shapes and names of fields and farms.

I have some theories firming up about surnames, one of them identifies a group of surnames as relating to the incomers of Hiberno-Danish origin, i.e. of the same origins as Godred Crovan. In Ireland they were called the Ostmen, men of the east. In Man, this I believe this term may have become corrupted and spawned;

Casement (Mac Ostman)
Costain (Mac Ostyn)
Stephen (Mac a Steen)
Stephenson translation

The other name for the Ostmen was Dhoo Gall, black foreigners. Here we hsve farm-names with Doole, and also the surname:

Cowell/Cowle

NGC
Typically we gete a mixture of these names ocurring, e.g. Stephenson, Balladoole, Arbory; Casement, Balladoole, Lezayre