This is a study of the small local chapels and burial grounds which are found throughout Man, Orkney and Shetland and an investigation into their relationship to the land divisions of these islands. It is a study which attempts to look at these sites within the context of their contemporary landscape. The historical evidence for the early Church in the Northern Isles and Man is introduced in Chapter 2 and interpretative accounts, based on that evidence, are considered in Chapter 3. The basic problem of chronology is then considered in Chapter 4 which sets out and examines historical, stylistic and archaeological criteria for the dating of sites. In essence, Chapters 2-4 provide an account of the current state of knowledge regarding the Manx and Northern Isles' chapels. Archaeological evidence is introduced in Chapter 5. This chapter, together with the survey of sites in Man and the Northern Isles (Volume 2), provide the necessary background material for the analytical work in Chapters 6&7. The association of the Manx and Northern Isles' chapels with the land divisions is considered in Chapter 6 and a theoretical model for the development of the Manx land system and for the association of keeill and treen is presented. This model is based partly upon this study's analysis of boundary association, a phenomenon which, it is suggested, may be indicative of Early Christian ecclesiastical organization. This model is also tested against the Northern Isles' data. Aspects of continuity are considered in Chapter 7 and conclusions and topics for future research are presented in Chapter 8.