Emily Rhoda Dietrich is listed on the Cemetery map..
in the Dietrich plot area.
Emily was named for her 2 grandmother's Emily, Dietrich and Rhoda Glenn.

So I believe this Emily Rhoda, the daughter of Joseph/Mattie is probably a granddaughter of one of the George's. And when she died her parents laid her to rest with Joseph's family and then they moved to Oregon.

HERE Joseph is with his family...............
1880 Precinct 9, Douglas, Colorado, United States
Age 9
Marital Status Single
Occupation At School
Birth Year (Estimated) 1871
Birthplace France
Father's Birthplace France
Mother's Birthplace France
HEAD: George Deitrich age:M 44 France
Emily Deitrich Wife F 39 France
Joseph Deitrich Son M 9 France
Willie Deitrich Son M 3 Colorado,
August Schreiber Cousin M 27 France
Emily Deitrich Daughter F 13 France
George Deitrich Son M 6 Colorado,
Citing this Record
"United States Census, 1880," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MFDF-7CN : accessed 30 August 2015), Joseph Deitrich in household of George Deitrich, Precinct 9, Douglas, Colorado, United States; citing enumeration district 38, sheet 347B, NARA microfilm publication T9 (Washington D.C.: National Archives and Records Administration, n.d.), roll 0090; FHL microfilm 1,254,090 --Affiliate Name The U.S. National Archives and Records Administration (NARA)
Affiliate Publication Number T9
Affiliate Film Number 0090

Name Joseph H Dietrich
Event Type Marriage
Event Date 11 Aug 1894
Event Place Castle Rock, Douglas, Colorado,
Age 23 Birth Year (Estimated) 1871
Spouse's Name Martha A Glenn
Spouse's Age 27
Spouse's Birth Year (Estimated) 1867
Citing this Record:
"Colorado Statewide Marriage Index, 1853-2006," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:KNQS-M31 : accessed 30 August 2015), Joseph H Dietrich and Martha A Glenn, 11 Aug 1894, Castle Rock, Douglas, Colorado, United States; citing no. , State Archives, Denver; FHL microfilm 1,690,070.


1900 Precincts 6-11, 15 Empire, Lawson, Dumont, Fall River, Freeland, Lamartine, Alice Empire town, Clear Creek, Colorado
Years Married: 6
Birth Date Jan 1871 Birthplace Germany
Marriage Year (Estimated) 1894
Immigration Year 1872
Father's Birthplace Germany
Mother's Birthplace Germany
Joseph Dietrich Head M 29 Germany
Mattie A Dietrich Wife F 33 Texas
Emma R Dietrich Daughter age:4 Colorado
Agnes R Dietrich Daughter F 2 Colorado
Citing this Record
"United States Census, 1900," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MQMS-321 : accessed 30 August 2015), Joseph Dietrich, Precincts 6-11, 15 Empire, Lawson, Dumont, Fall River, Freeland, Lamartine, Alice Empire town, Clear Creek, Colorado, United States; citing sheet 19B, family 487, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, n.d.); FHL micro

1900 census her parents: Joseph/Mattie Dietrich lived in Clear Creek, Adams Co. Colorado.
1906 they had a new baby girl, Nellie.
and by 1910 the family had moved from Colorado to:
Event Place North Medford Ward 3, Jackson, Oregon, and living with what appears to maybe an older daughter named after Mattie.

1920 Joseph/Mattie (Martha Glenn-Dietrich)and Nellie age:14 moved to Arizona.
1930 Joseph/Mattie (Martha Glenn-Dietrich)and Mother-in-law RHODA A. Glenn age:80 born Ark. lived in Arizona.

Siblings:
AGNES D. mar.: Williams (Divorced) --2nd Donald Buckley
She is a Teacher in L.A. California--born Colorado.
parents: Joseph F/Martha Glenn
1940 census Burbank, California-Agnes, is a teacher with 2 sons, and Donald installs telephones.

NELLIE mar.Donald Foster, Water Dept Engineer in Mass, and Nellie works in a flower shop. 1940 census Middlessex MA and her father Joseph Dietrich, age 69 France-shop mechanic. And they have a son Glenn/daughter, Joann. (Glenn after her mothers maiden name)

Grandfather: George Dietrich

Grandmother: Emilie T.

Maternal Grandmother: Rhoda A.

Paternal Grandfather: Wm. J Glenn

Her mother Mattie, Martha A Glenn-Dietrich was last known to live in Arizona.