Scotland is the northern part of the British Isles and is (currently) part of the United Kingdom.
Scotland shares a border with England to the south and is bounded by the North Sea to the east, the Atlantic Ocean to the north and west, and the North Channel and Irish Sea to the southwest. In addition to the mainland, Scotland constitutes over 790 islands including the Northern Isles and the Hebrides.
The west of Scotland has always had strong connections to Ireland and the Irish. In fact the Scots tribe after which the country is named were from Ireland and overran the previous Picts by the 10th century.The sea between Scotland and Northern Ireland was short and reasonably well behaved and this led to continuous exchanges of people between the two countries.
The Kilkie family seem to have considered Glasgow in Scotland and Derry in Northern Ireland as their joint home and many members of the family moved from one to another and back again over the 19th and 20th centuries.
Although there has been some spread of the family over the 20th century the main place of occupation of the Kilkie clan has been and is Glasgow in the west of Scotland.