Issac Johnson (b. ca. 1722) was in the Shenahdoah Valley of Virginia about 1745, and claimed land there in 1749. Descendants lived throughout the United States.

Sanford Gladden traces the history of the Durst/Darst family and some 40 other related families from their European roots to Philadelphia in Colonial times. They migrated to the Shenandoah Valley of Virginia, to Delaware and Pickaway Counties in OH and on to Texas. Some of the related surnames are: Beck, Cecil, Chandler, Charlton, Cozad, Craig, Damon, Deam, Dill, Eaton, Ewing, Fry, Glendy, Glotfelter, Grigsby, Guy, Harshman, Haynes, Holman, Huston, Jamison, Keithly, Kennedy, Kent, Lightner, Marshall, Morgan, Orman, page, Perrins, Ramsey, Selling, Stroop, Trolinger, and Weiser among other smaller branches.

Lists about 2500 books found in major libraries throughout the U. S. containing genealogies of families from Virginia and West Virginia. The books listed deal with families of Virginia origins but often follow their descendants far and wide across the continent. Each book is listed under the surname of the primary Virginia family covered in it. Many of the titles listed deal with several families, not all of which may have Virginia roots. Citations to all these allied families are listed in a cross-reference table, regardless of the geographic focus of the family, making this bibliography of use to researchers with interests outside Virginia also.