1.  LDS.  Family Search: Internet Genealogy Service:  IGI - International Genealogical Index (online at FamilySearch.org):

Benjamin ESTILL Spouse: Sarah D. DAVIS Marriage: 14 Mar 1872, Marion, Missouri Source: Marriage Records, 1827-1888. Marion County (Missouri). Recorder of Deeds

2.  1850 Census Index/Images (online at Ancestry.com):  living with widowed mother.

3.  AIS (Accelerated Index System) 1860 Census Index (online at Ancestry.com):  can't find.  He's only 15, so should be living with someone.

4.  Family Quest Archives:  Missouri 1870 Census Index.  Heritage Quest ACD-0019:  can't find.  He probably isn't married, yet.  Who is he living with?

5.  LDS.  Family Search: Census Records: 1880 United States (online at FamilySearch.org):

Census Place: Westport, Jackson, Missouri
Source: FHL Film #1254694; NARA Film #T9-0694; Pg 262B
	Relation	Sex	Marr	Race	Age	Birthplace	Occupation	Fa	Mo
Benjamin ESTILL	Self	M	M	W	35	MO	Real Estate Broker	KY	MO
Alice ESTILL	Wife	F	M	W	23	MO	Hsekpr	KY	KY
Joseph R. ESTILL	Son	M	S	W	7	MO		MO	MO

6.  1890 Census:  the 1890 census population schedules were destroyed.

7.  1900 Census Index/Microfilm (online at Genealogy.com):  can't find.

8.  WorldConnect / Ancestry World Trees (online at RootsWeb.com/Ancestry.com).