Martha was the daughter of Mitchell P. Walters and Mary Ann Lemon. She married Thomas Jefferson (or Jesse) King on 22 Dec 1892 in Fulton Co., KY. She was the mother of four known children:
Rina
Stella
Emma Pearl
Melvin Mitchell

1900 census, Hickman Co., KY, Moscow Prect., T623-527, ED 51, pg. 111B/112A, #367/370, 22 Jun 1900:
Walters, Mary, Head, w, f, Jan 1830, 70, wid, children 12/11, TN, TN, TN
Walters, George W., Son, w, m, Sep 1870, 29, s, TN, TN, TN, Teamster
Walters, Delilah, Dau, w, f, Jun 1879, 20, s, TN, TN, TN
Walters, Melissa, Dau, w, f, Apr 1881, 19, s, TN, TN, TN
Walters, Virginia, Dau, w, f, Jan 1883, 17, s, TN, TN, TN
King, Martha, Dau, w, f, Oct 1873, 26, m, 10 yrs, children 4/3, TN, TN, TN
King, Jesse, SonLaw, w, m, May 1874, 26, m, yrs, KY, KY, KY, Teamster [could be Jeff]
King, Rina, GrDau, w, f, May 1891, 9, s, KY, KY, KY
King, Stella, GrDau, w, f, Jan 1894, 6, s, KY, KY, KY
King, Emma, GrDau, w, f, Apr 1898, 2, s, KY, KY, KY

1920 United States Federal Census; Census Place: Blytheville Ward 3, Mississippi, Arkansas; Roll: T625_72; Page: 11A; ED: 150.
Name: Mattie King
Age: 44; Birth Year: abt 1876; Birthplace: Tennessee
Relation to Head of House: Wife
Marital Status: Married; Spouse's Name: Tom J King
Father's Birthplace: Tennessee; Mother's Birthplace: Tennessee
Household Members: Name Age
Tom J King 49
Mattie King 44
Rena King 24
Pearl King 22
Melvin King 17
Clara Meeks 12
R T Estrange 2 [grandson]

Arkansas Death Index, 1914-1950
Name: Mattie E King
Death Day: 28; Death Month: Aug; Death Year: 1922
County: Mississippi
Volume Number: 49; Roll Number: 19141923
Certificate Number: 787
Source Information: Ancestry.com. Arkansas Death Index, 1914-1950 [database on-line]. Provo, UT, USA: Ancestry.com Operations Inc, 2005.