Huston Stroup was informant on Thomas Edward Stroup's death certificate.
Thomas' parents were listed as Henry Stroup and Lida Millsap.According to www.ancestry.com's Missouri Marriages 1851-1900 database, Henry Stroup and Lidia Milsap married in Laclede Co. MO 28 Apr 1853.
On June 1860 Laclede Co. MO census, Henry (35 yrs) and Lydia (25 yrs) Stroup are living with children:James (13 yrs), John (12 yrs), Caroline (7 yrs), William R. (6 yrs), Elizabeth (4 yrs), Anderson C. (3 yrs), and Calvin H. (3/12 yr), next door to Gideon A. and Elizabeth Milsap.
On July 1870 Laclede Co. MO census, Henry (45 yrs) and Lydia (39 yrs) Stroup are living with children:James (22), John (21), William R. (17), Sarah E. (14), Anderson C. (12), Calvin H. (11), Rufus L. (8), Charles H. (6), Mary L. (4), and Franklin A. (1).
On June 1880 Laclede Co. MO census, Henry (54) and Lydia (46) are living with children:William (26), Columbus (22), Houston (20), Rufus (18), Charles (16), Louella (13), Franklin (10), Edward (7), Clara (5).
On June 1900 Greene Co. MO census, Thomas E. (28) and wife, Fannie (21) Stroup are living with Thomas' father, Henry (75), next to Rufus (38) family.
I conclude that Calvin Houston Stroup was a son of Henry and Lydia (nee Milstrap) Stroup and a older brother of Thomas Edward Stroup.
On June 1880 Arlington, Phelps Co. MO census, C.H. Stroup (20 yrs) was a laborer living with the G.T. Richey Family.
On 1910 Union Twp., Pulaski Co. MO census, Houston (51) and Ellen B. (54) "Strupe" were listed as married 25 years, 0 children born, 0 surviving children.
On 1920 Union Twp., Pulaski Co. MO census, Calvin H. (61) and Ealen/Elen (73) Stroup listed.