There is alot of info about HW on FamilySearch and FamilyTree (LHSQ-L5P includes 2nd wife), including other children and his marriage to Fidelia:
"Indiana Marriages, 1811-2019," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:K3LJ-NGS : 3 August 2022), Horace W Lyon and Fidelia A Chase, 09 Mar 1852; citing Steuben, Indiana, United States, Marriage License, Indiana Commission on Public Records, Indianapolis; FHL microfilm 005206329.
And that make this 1860 Census him and her:
"United States Census, 1860", database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M664-L9V : 18 February 2021), H W Lyon, 1860.