Lesley - you are some 3.5 centuries after the events - the background is that the 1511/1513 manoral rolls were thought to be the earliest survivors (look these up on manxNotebook - www.manxnotebook.com/catalog/d245.htm) but there is an earlier gragment of 1498 - these early rolls (those from 1511 onwards are on mormon microfilm so you can read them yourself!) give important cluses as to the derivation of Manx family names as well as to the development of landholding