Sandra: Here's some data for you:
ROBERT ALEXANDER: a schoolmaster & plantationer, b. 1710, County Down, Ireland; emigrated first to PA in 1736 and to Augusta Co, VA in 1742; d. Oct 1783, Augusta Co, VA; s/o WILLIAM "The Corpulent" ALEXANDER; m. abt 1740 at PA to ESTHER BEARD, b. 1724, Ireland; d. > 1779; d/o *THOMAS BEARD, and JEAN MCNUTT.Known Issue: (Not in order of birth): William, Ann, Robert, Thomas, Esther, Peter, James, Hugh, Sarah, and Eleanor.
According to "Immigrants to America before 1750 . . .," by Frederick A. Virkus, editor, Robert and Archibald Alexander, the latter accompanied by his wife, Margaret, and dau., Elizabeth, arrived at Philadelphia and gave "proof of importation" in 1736. They first settled along the bank of the Schulykill River, then to Nottingham, Chester Co, southwest of Philadelphia. Chester Co. was formed in 1682 as an original county in PA, located to the southwest of Philadelphia and now home to such historical sites as Valley Forge National Historical Park. New Castle, Co, DE, and Cecil Co, MD, border southern Chester County. Nottingham is situated near the Cecil Co, MD, border.
While in PA, Robert secured a patent on 2 Jun 1742 for 100 acres in Lancaster Co, the same year that he is first found in records of Augusta Co, VA.
The earliest record of Robert Alexander in Augusta Co. is found in a collection of manuscripts, copied from official documents, left to the State Historical Society of Wisconsin by Dr. Lyman C. Draper. In the manuscripts are the muster rolls of nine militia companies in Augusta Co. for the year 1742. Robert is listed in Captain John Christian's Company. This would indicate that he removed to Augusta Co. before his brother, Archibald and at abt the same time as Gabriel Alexander, soon followed by James Alexander, who also had land in Lancaster Co, abt 1733.
Source: (1) Arnolds The Alexander Family. . . p. 2-3; (2) Chalkey's Chronicles of the Scotch-Irish Settlement in Virginia, Vol. II, p. 1, 294 and 445, and Vol. III, p. 219; (3) Virkus' The Abridged Compendium of American Genealogy, Vol. III, p. 490; (4) Robert Alexander's Will, Augusta Co, VA; (4) Waddle's Annals of Augusta County, Virginia, p. 59, 60, 69, & 123; (5) Washington & Lee Univ. Archives, Address delivered by Hon. Hugh B. Grigsby 22 Jun 1890, titled "The Founders of Washington College,"Historical Papers No. 2 - 1890, p. 10 and 11; (6) Oren F. Morton's A History of Rockbridge County, Virginia; (7) Virkus' Immigrants to America before 1750. . .; (8) State Historical Society of WI, Collection of Manuscripts of Early Augusta Co, VA, Records, Dr. Lyman C. Draper, comp.
JAMES ALEXANDER: b. 1766, Augusta Co; d. 1849, Greenbrier Co. VA [WV]; s/o ROBERT ALEXANDER and ESTHER BEARD; m. 7 Apr 1801, Rockbridge Co, to his cousin, MARGARET HANNAH LYLE, known as Peggy, b. 1776, Augusta Co. & d. 1854, Greenbrier Co; d/o JAMES LYLE and *HANNAH ALEXANDER.Known Issue: Esther Lyle, Ann Eliza, William A., Robert A., Julia Sarah, Margaret Pauline, and James L.
In 1783, James inherited from his father, Robert, land that was adjoing to John Fulton and James Henry.
Source: (1) James Alexander's Will, Greenbrier Co; (2) Arnold's The Alexander Family of Scotland, Ireland, and America, p. 3 & 6; (3) Dodd's Early American Marriages: Virginia to 1850; (4) Waddle's Annals of Augusta County, Virginia, p. 123 (5) Robert Alexander's Will, Augusta Co, Will Book No. VI, p. 371.
*HANNAH ALEXANDER: b. 21 Apr 1745, Nottingham, Chester Co, PA; d. 1835, Rockbridge Co, VA; d/o ARCHIBALD ALEXANDER (b/o ROBERT) and MARGARET PARKS;m. 1763, Augusta Co, VA to Rev. JAMES LYLE, b. 1732, County Antrim, Ireland; d. 1791, VA; s/o MATTHEW LYLE and ESTHER BLAIR. Known Issue: Joseph, Mathew (b. 1798 & d. 1911), Elizabeth, Archibald, James Alexander, Margaret, Esther, and John.
Source: (1) Notable Southern Families, Vol. I & II, ancestry.com; (2) William M. Clemmons' Virginia Wills Before 1799, p. 56; (3) Arnold's The Alexander Family of Scotland, Ireland, and America, p. 7; (4) Oscar K. Lyle's The Ancestry and Posterity of Matthew, John, Daniel and Samuel Lyle, Pioneer Settlers in Virginia, 1912; (5) Virkus' The Abridged Compendium of American Genealogy, Vol. II, p. 348.
JULIA SARAH ALEXANDER: b. 1818, Augusta Co, VA; m. 7 Dec 1839, Augusta Co, to CYRUS SCOTT LAREW, farmer, b. 1816, VA. Known Issue: Sarah "Sallie" D.(b. 1846), ? Maggie (b. 1848), Roberta (b. 1850), James Alexander, Mary V. (b. 1855), Cyrus S. Jr. (b. 1856), Bettie A.L. (b. 1858), Sara E. (b. 1860), Willis Leo (b. 1862), and Charles G. (b. 1866).
Original spelling of Cyrus' surname was Larue. Records indicate some members of the family continued to use the original spelling.
Source: (1) Will of James Alexander, Greenbrier Co; (2) 1870 Federal Census, Greenbrier Co, WV; (3) Dodd's Early American Marriages: Virginia to 1850.
Would very much appreciate data on descendants of Cyrus & Julia. Please note that most of my data is from secondary sources. I recommend one obtain original records for direct ancestors. Please let me know if I can be of further assistance. Good luck in your research.