David’s years of birth found on documents
1822 - 1850 census
1819 - 1860 census
1813 - 1870 census

before 1840 - Going by the birth of his first child Mary, David could have been married before or around 1840.

1841 - David’s daughter Mary E. was born

1846, August 5th, Greene County, Tennessee - David married Malinda Henry

1850 - Division 9, Greene County, Tennessee
DICKINSON, David 28 m tenant TN
DICKINSON, Malinda 22 f TN
DICKINSON, Mary E. 9 f TN
DICKENSON, Alexander 1 m TN1335

1865, September 29th, Greene County, Tennessee - David married Martha M. Hisinger

1860, District 15, Greene County, Tennessee1336
DICKISON, David 41 m farm TN
DICKISON, Mary E. 18 f [can’t read] TN
DICKISON, Alexander 11 m TN
DICKISON, Martha 9 f TN
DICKISON, Sarah J. 6 f TN
DICKISON, Bobie 5 m TN
DICKISON, William 3 m TN

1870 United States Federal Census, Milburntown, District 15, Greene, Tennessee1337
DICKASON, David 57 m w farmer TN
DICKASON, Martha 23 f w keeping house TN
DICKASON, Alexander 20 m w TN
DICKASON, Sarah 19 f w TN
DICKASON, Martha 17 f w TN
DICKASON, Robert 15 m w TN
DICKASON, William 14 m w TN
DICKASON, Julie 4 f w TN
DICKASON, Louisa 2 f w TN