John Mateer, the father of Calvin, was born in this beautiful Cumberland valley, on a farm which was a part of a large tract of land entered by the Mateers as first settlers, out of whose hands, however, it had almost entirely passed at the date when this biography begins. The mother of Calvin was born in the neighboring county of York. Her maiden name was Mary Nelson Diven. Both father and mother were of that Scotch-Irish descent to which especially Pennsylvania and Virginia are indebted for so many of their best people; and they both had behind them a long line of sturdy, honorable and God-fearing ancestors. At the time of Calvin’s birth his parents were living in a frame house which is still standing; and though, with the passing of years, it has much deteriorated, it gives evidence that it was a comfortable though modest home for the little family. One of the employments of his father while resident there was the running of a water mill for hulling clover seed; and Calvin tells somewhere of a recollection that he used to wish when a very little boy that he were tall enough to reach a lever by which he could turn on more water to make the mill go faster,—a childish anticipation of his remarkable mechanical ability and versatility in maturer years. Calvin was the oldest of seven children—five brothers and two sisters; in the order of age, Calvin Wilson, Jennie, William Diven, John Lowrie, Robert McCheyne, Horace Nelson and Lillian, of whom Jennie, William, Robert and Horace are still living. Of these seven children, Calvin and Robert became ministers of the gospel in the Presbyterian Church, and missionaries in Shantung, China; John for five years had charge of the Presbyterian Mission Press at Shanghai, and later of the Congregational Press at Peking, where he died; Lillian taught in the Girls’ School at Tengchow, and, after her marriage to Rev. William S. Walker, of the Southern Baptist Mission, in the school at Shanghai, until the failing health of her husband compelled her to return to the United States; William for a good while was strongly disposed to offer himself for the foreign missionary service, and reluctantly acting on advice, turned from it to business. Jennie married an exceptionally promising young Presbyterian minister, and both offered themselves to the foreign work and were under appointment to go to China when health considerations compelled them to remain in their homeland. Some years after his death she married a college professor of fine ability. Horace is a professor in the University of Wooster, and a practicing physician.