Note that most researchers have Elijah Isaac Garrison as the son of James Herschel Garrison. There is the possibility that Elijah is the son of William c1806 Garrison:
(1) William is shown in the 1830 Harmony, Washington County, Missouri census with a spouse and one child under age 5 and
(2) John 1800 Garrison, William’s brother, is also shown in the 1830 Harmony, Washington County, Missouri census.
(3) William is shown living with his son Elijah in the 1860 Osage, Crawford County, Missouri census seen below.
Name: Elijah Garrison
Age: 31
Birth Year: abt 1829
Gender: Male
Birth Place: Kentucky
Home in 1860: Osage, Crawford, Missouri
Post Office: Osage
Dwelling Number: 592
Family Number: 584
Household Members:
Name Age
Elijah Garrison 31
Margaret M Garrison 33
Wm R Garrison 9
Jas A Garrison 7
Saphrona Garrison 2
Thos Garrison 6/12
Wm Garrison 50**************
(4) William is also shown living with his brother, John, in the 1870 Crawford County, Missouri census.