I have done quite a bit of research on the McCleaf Family line.I have a file of McCleaf descendents with 792 individuals.
I have John W. McCleaf being born in October 1851.I have him having married twice.He first married Nancy M. UNKNOWN (b. Bet. 1849 - 1850) who died 13 March 1880.(My source for the info on John W. is another McCleaf researcher, John Lunceford.)They had four children:
James W. MCCLEAF born 1874 Margaret A. MCCLEAF born 1877 Annie D. MCCLEAF born 1878 Sarah MCCLEAF born February 1880
John then married Harriet L. BENCHOFF (b. February 1849).They had the three children as you mentioned:
Harvey S. MCCLEAF born March 1881 George Franklin MCCLEAF born September 1887 Norman David MCCLEAF born September 1886
I have Harvey marrying Nona UNKNOWN who was born 26 March 1874 and died 07 August 1928.I have no children for Harvey and Nona.
I have George marrying Carrie UNKNOWN and dying 05 October 1967.Your information seems more accurate about George than mine (I had no children for him).
I have Norman marrying Jeanette Gertrude HOFFMAN on 08 September 1908 at St. Mary's Church, Hamiltonban, Adams Co., PA.This marriage info I found at St. Mary's Church record, Hamiltonban, PA as found in the Vital Card file at the Historical Society of York Co., York, PA. I have Norman dying 12 May 1961 (Source: St. Francis Xavier Church record, Gettysburg, PA as found in Vital Card file at the Historical Society of York Co., York, PA). I have Jeanette dying 25 August 1969 (Source: St. Francis Xavier Church record, Gettysburg, PA as found in Vital Card file at the Historical Society of York Co., York, PA).
Norman and Jeannette had seven children, three boys and four girls (in addition to Francis E. that another person responding to your query had identified).I have the names and dates, but because they may still be alive, I have chosen not to post their birthdates, etc.
I have John W. as being the son of James MCCLIEF (b. Abt. 1815) and Catherine WILKERSON (b. Abt. 1824).The were married 15 September 1842 (Source: Sentinel (newspaper), 26 September 1842, found in card file at the Adams County Historical Society, Gettysburg, PA).They had one other son as well: James Cooper MCCLEAF born 24 February 1846 (source: St. Joseph Church register, Emmitsburg, Md., M2832, MD State Archives).