William M. Cornelius, son of Abner Cornelius and Susan McPherson.
He married Delilah Marsh in 1853 Blount County, AL. Nine known children were born to this couple: William Pennington, Westley Curtis, Martha J., Mary Jane, Abner McPherson, Susan, Cynthia Ann, Henry Bostick, and D.K.
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1850 Blount Co, AL, pg 101A
Abner Cornelius, 49, SC
Susan, 47, TN
Letta, 25, AL
McPherson, 23, AL
William, 20, TN
Susan, 18, GA
Elisabeth Ann, 18, GA
Cincinnati, 14, GA
Abner, 12, AL
Sincinnana, 9, AL
Barton, 6, AL
Brighton, 4, AL
//

1860 Blount Co, AL, pg 928
William M.Cornelius, 28, TN
Delia, 35, AL
William P., 6, AL
West, 4, AL
Martha, 2, AL
Mary, 2, AL
Abner, 3/12, AL

1870 Jefferson Co, AL, pg 290
William Cornelius , 41 AL, farmer
Deliah, 41, AL
W.P., 18 M, AL
West, 16 M, AL
Martha, 13 F, AL
Abner, 9 M, AL
Mary, 13 F, AL
Susan, 6 F, AL
H.B., 3 M, AL
D.K., 1 M, AL

1880 Jefferson Co, AL, ED 69, pg 376C
William Cornelius, 51, TN
Cordelia, 53, AL
Abner M., 21, AL
Savanah, 15, AL
Henry B., 13, AL

1900 Jefferson Co., AL, ED 104, Sh 43A
Annie Nichols, Jul 1862, 37, AL (Note: Annie is Cynthia Ann dau of Wm M.)
Charley A. Nichols, Dec 1884, 15, AL
Reedie D. Mar 1890, 10, AL
William M., Jun 1894, 5, AL
Arthor C., Mar 1896, 4, AL
William Cornelious, Aug 1829, 70, AL, father

1910 Jefferson Co., AL, ED 134, Sh 9A
Cynthia Ann Nichols, 44, AL, mother of 6 children, 4 alive.
Charles A., 25, AL
William M., 16, AL
Arthur P., 13, AL
William M. Cornelius, 81, TN, widower.

1912 - Jefferson County AL Death Certificate #464. William Marion Cornelius, age 83 years, 10 months, 4 days, died June 15, 1912 in "Cornelius town", Jefferson County, AL. Widowed. Father Abner Cornelius; mother Susan Cornelius. Buried Cluster Springs Cemetery, Jefferson County, AL.