1900 Census taken on 16 Jun 1900 at Union Township, Pickering, Nodaway, Missouri, shows Marion and Mattie Gray and family living on an owned mortgaged farm.
Marion Gray, age 32, born Dec. 1867, married 11 years, born in Missouri, father in Missouri, mother in Indiana, occupation = Farmer
Mattie Gray, wife, age 29, born Apr 1871, married 11 years, 6 children 6 living, born in Missouri, both parents in Indiana, no occupation.
All children born in Missouri as were both parents
Orville, son, age 14, born Jan. 1886, at school
Herman, son, age 8, born Aug 1891, at school
Effie, daughter, age 7, born March 1893, at school
Burley, son, age 6, born April 1894, at school
Olla, daughter, age 2, born Feb. 1898
Alvin, son, age 6/12, born Nov. 1899