Born on Apr 29, 1829 to Lazareth Masterson and Elizabeth "betsy" Givens Masterson. Robert Morrow "r.m." Masterson passed away on Mar 29, 1895, at the age of 65 and was buried in Gillespie Cemetery in Eugene, Oregon, United States. Robert Morrow "r.m." Masterson was married to Nellie Jackson Graham Gillespie Masterson and had 9 children: Indora Elizabeth Masterson Fisher, Millie B. Masterson Blanton, Chloe L. Masterson, Evan Holmes Masterson, Nellie Lee Masterson, Ella Masterson Baker, Custis Masterson, Marcellus Givens Masterson, Marie E. Masterson.