Jeff,
I agree with others that the best way to work on a Brick Wall is to build the profile INCLUDING the siblings, wives, children, etc....
But I looked at Family Search records and it's likely you ancestor is Thomas Howard Brooks with FamilySearch ID GWSR-SQM located at https://www.familysearch.org/tree/person/details/GWSR-SQM
They have posted 5 very useful Family Search records there, that you certainly want to include in your ancestor's profile. Those records are:
"Illinois, County Marriages, 1810-1940," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:QK92-VX5T : 17 October 2017), Thomas H Brooks and Julia Burkhart, 16 Sep 1869; citing Pulalski, Illinois, United States, county offices, Illinois; FHL microfilm 960,486.
"United States Census, 1870", database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M6HY-Q2S : 19 March 2020), Howard Brooks, 1870.
"Illinois, County Marriages, 1810-1940," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:QK92-297Z : 17 October 2017), Howard Brooks in entry for Oliver P Brooks and Maggie Brooks, 23 Dec 1894; citing Massac, Illinois, United States, county offices, Illinois; FHL microfilm 963,669.
"Illinois Deaths and Stillbirths, 1916-1947," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:NQS3-WSP : 8 March 2018), Howard Brooks in entry for Oliver P. Brooks, 03 Feb 1930; Public Board of Health, Archives, Springfield; FHL microfilm 1,643,654.
"United States Census, 1860", database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MXH4-VTT : 18 March 2020), Julia Burkhart in entry for M Burkhart, 1860. (Wife of Thomas H. Brooks)
Unfortunately, they don't propose parents BUT a little more searching finds a Thomas H. Brooks (some records just Howard Brooks) who is a few years younger than the 1870 census record for YOUR Thomas Howard Brooks.
I would look closely at this man's records, despite the age difference:
"United States Census, 1860", database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MX4G-VLP : 18 March 2020), Thos H Brooks in entry for Jane Penington, 1860.
"United States Census, 1850," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M8P1-3P8 : 4 April 2020), Jane Brooks, Pulaski county, part of, Pulaski, Illinois, United States; citing family , NARA microfilm publication M432 (Washington, D.C.: National Archives and Records Administration, n.d.).
Joseph B. Brooks b Illinois 1823 possible father?
"Illinois, County Marriages, 1810-1940," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:X25R-NQ1 : 4 November 2017), Joseph B Brooks and Jane Smith, 1840; citing Alexander, Illinois, United States, county offices, Illinois; FHL microfilm 961,420. (In 1850, there is a girl living with Joseph and Jane Brooks, named Smith.)
I haven't looked for ideas on Ancestry.com (currently not a paying member)...... but at this stage if it were my ancestor, on the EDIT page, I'd create a == Research Notes == section below the == Biography == section. There you can track your research progress.