Il est marié avec Maria Platt.
Ils se sont mariés le 21 mars 1855 à Cook County, Illinois, il avait 32 ans.Source 4
Enfant(s):
Aurora, Kane County, Illinois. Household 76/76 R.G. Montony, age 47, lawyer, born New Jersey; Mary L., age 51, housekeeper, born New York; Geo. D., age 14, born Illinois; Charlotte, age 13, born Illinois; many servants and employees follow.
Aurora Ward 4, Kane County, Illinois. Household 249/351/393. Kate Montony, head, born Sept 1862, age 37, married 19 years, born Indiana, 2 births/2 living children; Eugene P., son, age 17, born Apr 1883, Illinois; Richard N., son, age 14, born July 1885, Illinois; Richard G., father-in-law, born Sept 1923, age 76, widowed, born New York; May Meeker, orphan, born Nov. 1884, age 15, single; Marjorie Meeker, orphan, born Jan 1890, age 10, single.
R. G. Montony and Maria S. Platt married on 21 Mar 1855, Cook County, Illinois/ database online