Scotch-Irish Settlements in Pennsylvania:
Large Scotch-Irish settlements were made in Chester, Lancaster, and Dauphin Counties in the first third of the century. From Dauphin County the stream of settlement crossed to the west side of the Susquehanna. H. J. FORD
OF THE THREE MAJOR racial groups of Pennsylvania the English were the first to arrive, and the Scotch-Irish the last. When the Scotch-Irish began to enter the province in numbers sufficiently large to effect substantial settlements, they found the land in the original English counties already largely occupied, while the German counties immediately to the westward were in process of being occupied; hence the newcomers passed these by to settle farther out on the frontier. Before they began to come in any considerable numbers, however, the Scotch-Irish entered as individuals or in small groups toward the close of the seventeenth century and in the first decade of the eighteenth. The Scotch racial strain in Pennsylvania appears to have been represented at first chiefly by those coming directly from Scotland rather than from Ulster, but when the immigration assumed large proportions the Ulster Scots promptly became and thereafter remained by far the more numerous group.
Immigration of the Scotch-Irish into Pennsylvania prior to 1717 was too slight to attract much attention, but in that year began the first important wave of immigration of this racial group into