A son of Francis William and Salome (Bequeath) Mellott. He was married with Fannie Millard.

A birth date of June 7, 1861 has been suggested by S Brown FAG ID 49992757.

1870 United States Federal Census
Name: William F Melott
[William F Mellott]
Age in 1870: 9
Birth Year: abt 1861
Birthplace: Pennsylvania
Home in 1870: East Providence, Bedford, Pa
Post Office: Rays Hill
Name Age
Francis Melott 66
Salvina Melott 44
Ephraim Melott 21
John Melott 15
Sarah A Melott 13
William F Melott 9 ***
Susan Kissel 18

1880 United States Federal Census
Name: William F. Mellott
Age: 18
Birth Year: abt 1862
Birthplace: Pennsylvania
Home in 1880: East Providence, Bedford, Pa
Relation to Head of House: Son
Marital Status: Single
Father's name: Franklin Mellott
Mother's name: Saloma Mellott
Name Age
Franklin Mellott 76
Saloma Mellott 55
John K. Mellott 24
William F. Mellott 18 ***

1910 United States Federal Census
Name: W F Wilott
[W F Mellott]
Age in 1910: 41 [49]
Birth Year: abt 1869 [1861]
Birthplace: Pennsylvania
Home in 1910: Des Moines, Van Buren, Iowa
Spouse's Name: Fannie G Wilott
Occupation: Farmer
Years Married: 9
Name Age
W F Wilott 41 *** [49]
Fannie G Wilott 36 [nee Miller]
Theodore G Wilott 7
Hiram L Wilott 5
William S Wilott 2

1920 United States Federal Census
Name: Wm F Mellott
[Wm F Mallatt]
Age: 58
Birth Year: abt 1862
Birthplace: Pennsylvania
Home in 1920: Des Moines, Van Buren, Iowa
Marital Status: Widowed
Father's Birthplace: Pennsylvania
Mother's Birthplace: Pennsylvania
Occupation: Farmer
Name Age
Wm F Mellott 58 ***
Theadore G Mellott 17
Hiram L Mellott 15
Stockwell W Mellott 12 [William]
Elizabeth M Mellott 9

Iowa, State Census Collection, 1836-1925
Name: William F Mellott
Age: 64
Birth Year: abt 1861
Birth Place: Pennsylvania
Residence Date: 1 Jan 1925
Residence Place: Des Moines, Van Buren, Iowa, USA
Marital Status: Widowed
Father: Francis Mellott
Father Birth Place: Pennsylvania
Mother: Lona Nipple
Mother Birth Place: Pennsylvania
Parents' Marriage Place: Pennsylvania
Name Age
William F Mellott 64 ***
Gale Mellott 21
Lawrence Mellott 18
William Mellott 17
Elizabeth Mellott 14

1940 United States Federal Census
Name: W F Mellott
Age: 79
Estimated birth year: abt 1861
Birthplace: Pennsylvania
Marital Status: Widowed
Home in 1940: Cantril, Van Buren, Iowa
Inferred Residence in 1935: Cantril, Van Buren, Iowa
Name Age
W S Mellott 31
W F Mellott 79
Lawrence Mellott 33