Robert's parents were:
Isaac Benjamin Mathis, b. 1801 in Guilford County, NC. and d. Jul. 23, 1852 in Fort Laramie, Goshen County, WY. &
Elizabeth "Betsey" Ross, b. Mar. 12, 1805 in Guilford, Guilford County, NC. and d. Aug. 1891 in San Bernardino, San Bernardino County, CA.

Husband of Sarah Ann McCrary.

Robert & Sarah Mathis' children were:
1. Mary Elizabeth Mathis, b. 1857. Mary marr. _ Smith.
2. * Rose Ann Mathis, b. Dec. 17, 1858 in San Bernardino County, CA. and d. 1934. Rose marr. Roswell "Ross" Christie/Crystal Smith.
3. Alfred Marion Mathis, b. 1860 and d. 1938
4. * Isaac Jefferson "Jeff" Mathis, b. May 17, 1863 in San Bernardino County, CA. and d. Feb. 4, 1909 in San Bernardino County, CA.
5. * Ellen Lenor "Nora" Mathis, b. Oct. 6, 1864 in the Cajon Pass area, San Bernardino County, CA. and d. May 24, 1950 in San Jacinto, Riverside County, CA. Ellen marr. George Mapstead.
6. * Alice Jane Mathis, b. Oct. 9, 1865 in CA. and d. Aug. 26, 1955 in San Bernardino County, CA. Alice marr. Joseph Camp Thorn and Edward Waverly Loucks.
7. * Sarah Susan "Susie" Mathis, b. Apr. 28, 1870 in San Bernardino, San Bernardino County, CA. and d. Mar. 31, 1918 in San Bernardino County, CA. Susie marr. Thomas Mapstead.
8. * Temperance Christine "Christie" Mathis, b. Aug. 27, 1871 in CA. and d. Mar. 21, 1947 in San Bernardino County, CA. Christie marr. Will Hurley and Harry Gordon Virgin and _ Russell.
9. * Hiram Alonso Mathis, b. Nov. 27, 1873 in San Bernardino, San Bernardino County, CA. and d. Oct. 13, 1932 in San Bernardino, San Bernardino County, CA.
10. * Emma Joan Mathis, b. Jan. 7, 1876 in CA. and d. Feb. 15, 1961 in La Mesa, San Diego County, CA. Emma marr. Christian "Chris" Horacio Fabun.
11. * Libbie Lorena Mathis, b. Dec. 2, 1878 in San Bernardino County, CA. and d. May 26, 1963 in San Bernardino, San Bernardino County, CA. Libbie marr. John Harris Fabun in 1897, Theodore Edwin Mundell in 1904, George Albert Watts in 1914, Aaron C. Bowles and Carmel Joseph Camossi.

The Daily Sun (San Bernardino, CA.), P. 1, Col. 2
Fri., Feb. 9, 1900
DEATH OF AN OLD SETTLER
Robert Francis Marion Mathis of Cajon Dies Suddenly, Funeral Services Will be Held in This City
Word was sent down last night to Undertaker W. D. Aldridge, announcing the death of Robert Francis Marion Mathis of Cajon, and asking that the remains be brought down to this city and the funeral held here. Mr. Aldridge will start early this morning for Cajon to carry out the wishes of the family of the deceased and on his return the time for holding the funeral services will be announced. The funeral and interment will be in this city.
The deceased is a native of Tennessee, 68 years of age and came to this section a quarter of a century ago, and is well known to all the old settlers and pioneers. He is a brother-in-law of John Bessant of this city, the two marrying sisters, and leaves a large number of relatives to mourn his departure.
The deceased was in apparently his usual state oof good health until within a day or two, his death being quite sudden.

Los Angeles Sunday Times (Los Angeles, CA.), P. 7, Col. 4
Sun., Feb. 11, 1900
Item from: SAN BERNARDINO BREVITIES
The funeral of Robert F. M. Mathis, the pioneer, who died Thursday at Cajon, took place this afternoon from the residence of Ross Smith.