The Lincolns were among the very earliest families to settle in the untamed wilderness of the township known only by the coordinates determined when The Military Tract was surveyed in the early 1800s.  As best we know, no family historian recorded a wealth of personal details regarding the older family members, so we are left to glean a few bits and pieces from other sources.  We also have to acknowledge differing versions of those bits and pieces.

Mordecai Lincoln (ca. 1771 - ca. 1830) and his wife, the former Mary Mudd (___ - ca. 1859) were counted in Grayson County, Kentucky, when the Federal Census was taken in the summer of 1830. Nearby was the household of their son, Abraham.  Before the year was out, Abraham and family would join his younger brother, James, in Hancock County, Illinois.  Mordecai (perhaps not accompanied by Mary) may or may not have travelled with Abraham, but he, too, journeyed to Illinois, where he would lose his life during the bitter winter of 1830-31.

From the History of Hancock County, Illinois, 1921, Scofield, page 1274.

LINCOLN, Hezekiah, now deceased was one of the heavy landowners of Fountain Green Township, and a successful business man of La Harpe.  He was born in Hardin County, Ky., a son of Abraham and Elizabeth (Mudd) Lincoln, natives of Kentucky, who traveled overland to Fountain Green Township, Hancock County.  Abraham Lincoln was a first cousin of the illustrious American of the same name, who is enshrined in the hearts of his countrymen.  Upon coming to Illinois, the parents of Hezekiah Lincoln secured a tract of land in Fountain Green Township, and until they built a cabin, lived with the Mudd family, the first settlers in that neighborhood.  They suffered many hardships, and during the winter of the great snow, they lived on cornmeal, and were very glad to have that.  The father was a justice of the peace for many years, and both he and the mother died on their farm.  Their children were as follows: Priscilla, Robert, Permelia, Hezekiah, Nicholas, Ellen and Mary Jane, all of whom are deceased.

On June 5, 1835, Abraham Lincoln went to the land office at Quincy and paid $1.25 per acre for 93.8 acres located in the east half of the southwest quarter of Section 18, Township 6 North, 5 West.  This township wouldn't be named Fountain Green for another 15 years.  Click here to view a representation of the location of that acreage.

He went back to Quincy on February 3, 1836, and bought another 40 acres (also at $1.25 per acre) in Section 25, Township 6 North, 6 West.  That township would eventually be named Pilot Grove.

See also:

Early Settlers of Fountain Green Tp. Early Fountain Green Schools Pioneer Justices In Fountain Green The Old Catholic Cemetery

The Lincoln children were:

i.	Priscilla Lincoln, born about 1819 in Kentucky.
ii.	Robert Lincoln, born in March of 1823, in Kentucky.  He died in September of 1868 in Carthage, Hancock County, Illinois.  Burial at St. Simon Cemetery.
iii.	Mary Jane Lincoln, born about 1824 in Kentucky, died August 29, 1888, in Hancock County.  She was buried at LaHarpe City Cemetery, Hancock County.
iv.	Permilia Lincoln, born about 1827 in Kentucky.  She died December 12, 1895, burial at LaHarpe City Cemetery, Hancock County.
v.	Hezekiah Lincoln, born August 28, 1830 (or 1829), in Kentucky, died September 28, 1888, at LaHarpe, Hancock County, burial at LaHarpe City Cemetery.
vi.	Nicholas Lincoln, born May 25, 1833 (calculated from the tombstone inscription), in Illinois.  He died March 7, 1888, at LaHarpe, burial at LaHarpe City Cemetery.
vii.	Ellen Lincoln, born about 1840 in Illinois.  She died March 20, 1876, in Denison, Grayson County, Texas.  Her remains were reportedly interred at Springfield, Washington County, Kentucky.