You have probably already contacted the man who wrote the other message, and it is possible we have the same book -"Descendants of David Holsinger of Virginia" by Paul G. Holsinger, M.D.However, I will give a little of the information from that book:
"Martha Ellen was born Nov. 28, 1896, at Broadway, VA, Free Methodist Church;m. Dec. 3, 1916 at Sarles, ND to Emerson M. Duncan, Sr.(s. John Duncan) b. Nov. 7, 1887 in Nich., d Jan. 26, 1930 at Oxford, bu Oxford, farmer; Martha's ad - 9 Center St., Oxford, Michigan."There follows a list of the children and grandchildren at that time.
Martha was the daughter of "Philip William Holsinger, b. Sept. 3, 1868 in RCV, d Jan. 29, 1951 at Williams, Minn., farmer; m Mar. 22, 1891 in RCV by John P. Zigler to Lessie Rebecca Lee Derrow, (da John W. Derrow and Frances Beaver), b. May 17, 1872 in RCV, d Nov. 14, 1920 in Dash Twp. Christian Ch - Bu Sarles, ND."They were living in Dash Twp in May, 1900 when daughter Bertha was born.
Philip was b. 1867 (?), son of "David C. Holsinger b Sept. 24, 1839 in RCV., d Mar. 25, 1916, farmer; m Apr 22, 1866 in RCV by Christopher Keyster of Mare E. Allison (da. leannah Allison), b June 10, 1847 in RCV., d Dec. 10, 1925, bu Bethlehem Cem. at Tenth Legion"This paragraph says he was married to Lessie R. Derror.(I believe Derrow is correct.)
The book is incorrect in this area.David seems to have been the son of "John L. Holsinger b June 1801, d Apr. 7, 1884; m. Elizabeth L. ?, b. May 1814, d Feb. 18, 1891."
John was the son of "David Holsinger b before 1779, d before 1819, Lutheran Ch.; m Oct. 7 1797 to Catherine 'Caty' Spitzer (da Johann Heinrich Spitzer).Marriage consent was written in German and signed by both fahters. (There is a copy of these signatures in the book.)
David was the son of "Michael Holsinger b. Germany, came to America with his father, David, d Aug. 1819 in VA. bu family plot on Holsinger farm, farmer and basket maker.His wife Barbara d after 1819."
My children are descendants (through their father) of Michael Holsinger and Johann Heinrich Spitzer.It is possible this book is for sale in the HRHS Library in Dayton, Virginia.(Harrisonburg-Rockingham County Historical Society)They have a wonderful library with many books and pamphlets for sale.