source: The McCarthys in Early American History BY: Michael J. O'Brien 1921 Bucks County seems to have attracted many of the Irish immigrants arriving via the Delaware River during the first quarter of the eighteenth century, and in the early records of that section of the State their names are found in goodly numbers. At a place called Haycock Run about twelve miles north of Doylestown, the County seat of Bucks County, there were a number of McCartys, evidently relatives, who came from Ireland between the years 1730 and 1737, and some of their descendants are since mentioned among the conspicuous families of the County. The earliest reference to a person of the name in this region is in the New Jersey Archives under date of October 25, 1733, when a marriage license was issued in New Jersey to "Daniel McCarty of Bucks County and Olive Titus." The place where the license was issued is not stated in the Archives, but in all probability it was in Warren County, directly across the Delaware River from Bucks. By a deed dated March 11, 1737 Thomas and Richard Penn, for a consideration of 38 pounds and "a yearly rental of one-half penny per acre," conveyed 250 acres of land in Nockamixon Township, Bucks County, to Edward McCarty, and in describing the boundaries of the tract the deed mentions "the lands of John Durham and Thomas McCarty," which indicates that the latter was already a settler in this place. There is another deed on record in Bucks County covering a second tract of 250 acres, sold by the Penns to Edward McCarty on April 19, 1738, and in the same record there is a deed dated March 3, 1738, from Thomas and Richard Penn to Silas McCarthy for 215 acres in Nockamixon Township, and the tax lists show that he and his son, Carroll McCarthy, settled on these lands. Silas McCarthy is mentioned five times down to 1749 in the Pennsylvania Archives among "Warrantees of Land in Bucks County."