Some of the trees are pre-1700 and some are after that.
Some of the trees are followed right up to present day. Tom did this book because "it became clear that a consisderable volume of material of interest to family hisorians was in existence and in danger of being lost, including family Bibles, letters, some from emigrants over 150 years old, account books, diaries and pedigrees." He put considerable time into collecting what he could in the Armagh area. Some of you have written to ask me to look up certain names for you. If I go by the index only and do not find the name there - it does not mean it is not included in this research.