"Able" Parker was counted in Madison Township, Fayette County, Ohio, in the 1830 Federal Census, along with a wife born within the same span of years. On the preceding census page were the households of his father and brother, Nathan.

The marriage documents of Sidney Parker, Abel's daughter, provide her mother's maiden name: Gragg.

Abel is said to have brought his family to the Hancock County area in the late 1830s.  He was not counted as a head of household in the 1840 Federal Census of Hancock County, and he was not listed in the 1842 Nauvoo Tax Index.

He died October 5, 1876, and was buried in the Willis Cemetery; no tombstone has been found.

The inscription on Margaret's tombstone has faded.  We do not know when she died, only that she was not listed in the 1850 Federal Census for Illinois.

See also: Early Fountain Green Schools

Based on current research and resources, the children of Abel Parker and Margaret Gragg were:

i.	Druzilla Parker, born about 1822 in Ohio.
ii.	Calvin Parker, born about 1826 in Ohio.  He died between June 1, 1880, and June 1, 1900, probably in Saline County, Nebraska.
iii.	Elizabeth Jane Parker, born December 16, 1828, in Ohio; died May 10, 1889, probably in or near Hancock County, Illinois.  She was buried at Fountain Green Cemetery, Hancock County, Illinois.
iv.	Sidney Parker, born about August 1826 in Fayette County, Ohio.  She did in 1909, burial location undetermined.
v.	Margaret Parker, born about 1831.  Margaret perhaps remained unmarried.  The last record found is the 1880 census, at which time she was in the John Yager household with elder sister, Sidney, also supporting herself by doing housekeeping.
vi.	Harrison Parker, born August 14, 1833, in Fayette County, Ohio.  He died February 18, 1901, at LaHarpe, Hancock County, Illlinois, interment at LaHarpe Cemetery.
vii.	Harriet Parker, born about 1835 in Ohio, died before June 1, 1860, probably in or near Fountain Green Township, Hancock County, Illinois.

Household of Able Parker
Males 0 thru 4 - 1
Males 5 thru 9 - 1
Males 30 thru 39 - 1
Females 0 thru 4 - 1
Females 5 thru 9 - 1
Females 10 thru 14 - 2
Females 30 thru 39 - 1
Free Colored Person - male, between the ages of 55 and 100 - 1
Total - 8

Parker, Abel, 57, farmer, property value $1500, born VA
Sydney, 23, female, born OH
Druzilla, 28, born OH
Margaret, 19, born OH, attended school within the year
Harrison, 17, farmer, born in OH, attended school within the year
Harriett, 15, born OH, attended school within the year
Calvin, 22, farmer, born OH

Abel Parker, 68, male, farmer, value of real estate 4000, value of personal estate 1000, born VA
Sidna [Parker dittoed], 35, female, born OH
Calvin [Parker dittoed], 34, male, farmer, born OH
Elizabeth Alton, 39, female, born OH
Margaret [Alton dittoed], 30, female,born OH    [Margaret Parker]
Harrison [Alton dittoed], 24, male, farmer, born OH    [Harrison Parker]
Harriet [Alton dittoed], 24, female, born OH    [Harriet Parker]
Cordelia [Alton dittoed], 10, female, born IL    [Cordelia Parker]

Parker, Abel, 77, male, white, retired farm, value of real estate 4000, value of personal estate 500, born VA, male citizen of the U.S. age 21 or more
Sidney, 45, female, white, keeping house, born OH
Margaret, 35, female, white, born OH
Cordelia, 19, female, white, born IL, attended school within the year