This page traces the family history of the family of John Elmer Bopp (1895-1974), which is connected to the Koppelmans through his marriage to Bertha Anna Koppelman, the second-youngest daughter of John Harman Koppelman.
John Bopp (b. March 31, 1844, Segnitz, Bavaria; d. December 25, 1899, Baltimore, MD) 1863 m. K. Elizabeth Horst (b. approx. 1845, Hannover, Germany; d. December 11, 1910, Baltimore, MD) They are buried in Loudon Park Cemetery, Baltimore. The 1880 census lists the Bopps living on Frederick Road near Mt. Olivet Cemetery in the village of Millington, which has disappeared from maps of Baltimore County. John and Elizabeth Bopp came to Baltimore from Germany in 1866. He was by turns a butcher, a coal and wood merchant, and an ice merchant. They belonged to St. John’s German Evangelical Lutheran Church (according to Scharf’s History of Baltimore City and County, this church was founded 1843 and was located at Biddle Street and Pennsylvania Avenue). John and Elizabeth had two sons, John and George:
a. John Bopp (b. March 13, 1869, Baltimore Co., MD; d. April 1, 1911, Baltimore Co., MD) m. Barbara A. Lang approx.
1895 (b. August 19, 1874, Baltimore, MD; d. July 12, 1946, Baltimore, MD ) Barbara A. Bopp was the daughter of
butcher John E. Lang (b. Germany) and Mary A. Kramer (b. Baltimore, MD) . Barbara and John Bopp are buried in
Loudon Park Cemetery. In 1900 the Bopps were living on Stinson Street, not far from where he and Barbara had grown
up. John and Barbara Bopp had two sons and two daughters :
1) John Elmer Bopp (b. June 11, 1895, Baltimore Co., MD; d. September 1974, Baltimore, MD) Easter Sunday 1922 by Rev. Paul C. Burgdorf in the parsonage of Jerusalem Ev. Luth. Church m. Bertha Anna Koppelman (b. March 16, 1902, Baltimore Co., Maryland; d. June 1991, Baltimore, MD  of cancer). When John was drafted in June of 1917, he was living with his mother and siblings on Furley Avenue, east of Belair Road, in Gardenville. During WW I, John E. Bopp served as a private in the American Expeditionary Forces, first in Company M of the 5th Maryland Infantry and then in the 115th Infantry, in the Meuse-Argonne.After the war, he worked as a steam-fitter. By the time he was married, John E. Bopp had become an ice dealer, as his father had been. He was well-known and well-liked in Gardenville as a friendly and sociable man. He always stopped to chat with his customers when he made deliveries, and was almost never seen without a pipe and a bag of Edgewood tobacco. He and Bertie lived in what we believe was the former home of Martha and Anna Gontrum, daughters of Judge John Gontrum, on Althea Ave., just off Belair Road. Bertie and John are buried in Parkwood Cemetery, Parkville, MD. For their descendents, click on her name above.
2) George H. Bopp (b. September 1896, Baltimore Co., MD; d. 1959, Baltimore, MD) m. Elizabeth Marx a
approx. 1925 (b. approx. 1900, MD), the daughter of another Gardenville truck-farming family; there is still a
Marx Avenue in the neighborhood. George started out as a carpenter and by 1930, he was a builder who owned
a home worth $8,000 on Furley Avenue. Also living with them were Elizabeth’s sister Marie Marx (b. approx.
1902, MD), a seamstress.
3) Emma Bopp (b. October 1898, MD) In 1920, Emma was living with her mother and siblings on Furley Avenue,
and worked as a machine operator in a clothing factory. 
4) Leona Bopp (b. approx. 1906, Baltimore, MD) m. Martin H. Lutz?
a. Martin John Lutz (b. 31 Aug 1944, Baltimore, MD)
b. George Philip Bopp (b. January 2, 1871, Baltimore Co., MD; d. December 9, 1936, Baltimore, MD) m. 1) Mathilda
approx. 1897 (b. August 29, 1876, MD; d. November 2, 1909, Baltimore Co., MD); 2) Marie A. approx. 1911 (b.
December 30, 1884, MD; d. December 25, 1940, Baltimore, MD) George, Mathilda, and Marie are all buried in Loudon
Park Cemetery. George Bopp followed his father into the coal business. In the 1910 census, he described himself as
proprietor of a coal yard, owned his home, and was prosperous enough to keep a servant. By 1920, his business had
expanded; it was now a coal and lumber yard. He, like his parents, raised his family on what was in 1900 called Old
Frederick Road near Mt. Olivet Cemetery. By 1920, Old Frederick Road had become Frederick Avenue. With his first
wife, Mathilda, he had three daughters and two sons:
1) Hellen Bopp (b. April 1898, Baltimore, MD)
2) George Philip Bopp, Jr. (b. July 1899) In 1920, young George was working as a clerk at his father’s coal and
3) Edna M. Bopp (b. approx. Baltimore, 1901, MD)
4) Edwin Bopp (b. approx. 1903, Baltimore, MD) (May have died before 1920)
5) Evelyn M. Bopp (b. approx. Baltimore,1904, MD)
With his second wife, Mamie/Marie, George had two more sons and two more daughters:
6) Gertrude G. or J. Bopp (unconfirmed: b. September 13, 1911, Baltimore, MD; d. March 3, 1996, Baltimore,
MD) may have married William or Warren W. Wallring (b. January 6, 1906) She is buried in Loudon Park
Cemetery, in the plot of her grandparents. One son has been documented:
a. Warren W. Wallring 
7) Raymond R. Bopp (b. February 28, 1916, Baltimore, MD; d. March 2, 1997) His grave stone in Loudon Park
Cemetery says that he served as a private in the U.S. Army during World War II.
8) Ernest John Bopp (b. October 23, 1917, Baltimore, MD; d. March 28, 1990) According to his grave stone in
Loudon Park Cemetery, he served as a Tec 5 with the U.S. Army during World War II.
9) Ruth M. Bopp (b. December 29, 1919, Baltimore, MD; d. September 23, 2004, Berlin, Worcester Co., MD) m.
Joseph C. Robb (b. July 24, 1924, Baltimore, MD; d. September 5, 1990, Baltimore, MD) Joseph Robb attended
Polytechnic Institute. After serving in Europe in the Army’s 157th Engineering Company during World War II, he
became a Baltimore firefighter. He received a citation for bravery from the city in 1970 when he and a fellow
firefighter pulled three elderly people from a burning nursing home in West Baltimore. He may have been a
member of Most Precious Blood Roman Catholic Church, as his burial mass was offered there on September 10,
1990. According to his obituary, he and Ruth had two daughters:
a. Patricia Robb m. Mulford
b. M. Denise Robb m. Gangler
Special thanks to Frank Sloat for his photos of Bopp graves in Loudon Park Cemetery, which can be seen at http://www.findagrave.com .
 Walter E. Arps, Jr., Maryland Mortalities, 1876-1915, from the Baltimore Sun Almanac; burial records of Loudon Park Cemetery, Baltimore, MD; grave stone inscription
 1880 Federal Census for Baltimore County, ED 219; Obituary, Baltimore SUN, 26 Dec 1899
 Baltimore City Death Certificate #G42043
 Social Security Death Index
 Marriage announcement, Baltimore AMERICAN, 30 Apr 1922
 Social Security Death Index
 Maryland in the World War, 1917-1919; Military and Naval Service Records, Vol. I-II (Baltimore, MD: Twentieth Century Press, 1933)
 1930 Federal Census for Baltimore, 26th Ward, ED 4-419, Sheet 25-A
 1920 Federal Census for Baltimore City, 26th Ward, ED 441, Sheet 10-A.
 Jerusalem Tidings, Fall 1945 (newsletter of Jerusalem Ev. Luth. Church)
 1900 Federal Census for Baltimore City, 19th Ward, ED 242, Sheet 2; 1910 Federal Census for Baltimore City, 20th Ward, ED 242, Sheet 17-A; 1920 Federal Census for Baltimore City, 20th Ward, ED 337, Sheet 6B; 1930 Federal Census for Baltimore City, 20th Ward, ED 4-635, Sheet 7-B.
 Burial records of Loudon Park Cemetery, Baltimore, MD
 Obituary of Joseph C. Robb, Baltimore Sun, September 10, 1990; Obituary of Ruth M. Bopp Robb, Baltimore Sun, October 2, 2004; Social Security Death Index