In his latest book, genealogist David Dobson has compiled a list of Scottish surnames of the estimated 150,000 Scots who settled in the America colonies. Many of the same surnames, of course, apply to the even greater number of Scots-Irish colonists whose forebears had originated in Scotland before re-settling in the province of Ulster.The Scottish Surnames of Colonial America attempts to identify Scottish names, provide explanations of their meaning and significance, give examples, and where applicable, name the clan to which the family is linked. In all, Mr. Dobson identifies about 1,000 Scottish surnames and their derivatives and also mentions one or more actual Scottish North Americans who bore that name before 1776.