First of all,you can find info on Sarah Catherine Bright by going to www.familysearch.org and typing Sarah Bright for Arkansas in the search string. It will bring up her birth, her parents,her marriage to John Henry Mitchell and her death in 1955 Perry Co AR.

John is listed as JH Mitchell in the Lovelace(Old Houston) cem. Dates Dec 31 1859-Mar 20 1906.
Sarah is listed as Sally Mar 24 1864-Feb 1955. Their son Alfred Leroy Mitchell is also there July 11 1904-Oct 19 1982.

According to the census:
1900 (have not located them)
1910 Houston TWP Perry Co
Sallie widow 50? MS NC AR
Thomas A 17 AR MO AR
Mittie 14 AR MO AR
Martha E 13 "
Susan T 11 "
John H 10 "
James R 8 "
Laura A 5 "
Alfred L 5 "

1920 Aplin TWP Perry Co
Sally widow 56 AR MS MS
Robert J 12 AR MO AR
Laura 15 "
Leroy 15 "

Mittie married ?Iron Hooper 1912. He was 21 she 17.
Susie 15 married Charley Stain 21 in 1913.

Charlie and Susie are buried in the Volman Cem in Bigelow:
Charlie O STANE Sept 2 1894-Nov 23 1954
Susie T STANE Nov 1 1898-July 20 1964

Can not find Mittie and husb in the bk.

Good luck,
Rayedene