1880 U.S. Census, Baltimore City, Maryland
Enumeration District 23
160 Eastern Avenue, North Side
Dwelling 155, Household 219
Traupwein, Jacob, white, male, 46, married, laborer, born in Hanover, father born in Hanover, mother born in Darmstadt
Traupwein, Katharine, white, female, 45, wife, married, keeping house, born in Hanover, both parents born in Hanover
Traupwein, Elizabeth, white, female, 18, daughter, single, at home, born in Maryland, both parents born in Hanover
Traupwein, John, white, male, 11, son, single, at school, born in Maryland, both parents born in Hanover
Traupwein, Jacob, white, male, 6, son, single, born in Maryland, both parents born in Hanover
Traupwein, Chares, white, male, 3, son, single, born in Maryland, both parents born in Hanover
Traupwein, Louis, white, male, 1, son, single, born in Maryland, both parents born in Hanover

On 26 November 1901, the Deutsche Correspondent reported that Lewis Trautwein and Barbara Schäfer, by Harry Diver, 108 South Bethel Street, had applied for a marriage license. [Deutsche Correspondent, 26 November 1901, page 5.]

On 29 November 1901, the Deutsche Correspondent reported:
“Schäfer—Trautwein.
Im Pfarrhause an der Ecke von Central-Avenue und Fayettestrasse traute gestern Abend Pastor E. Huber von der St. Matthäi-Geminde Hrn. Louis Trautwein mit Frl. Barbara Schäfer. Als Trauzeugen sungirten Hr. M. Schäfer und Frl. J. Hoblissell.” — “In the rectory on the corner of Central Avenue and Fayette Street, pastor Pastor E. Huber from St. Matthew's Parish, married Mr. Louis Trautwein and Miss Barbara Schäfer last night. As witnesses, Hr. M. Schäfer and Miss J. Hoblissell.” [Deutsche Correspondent, 29 November 1901, page 4.]

On 23 November 1905, the Baltimore Sun published:
SURPRISE TO MRS. TRAUTWEIN.
A pleasant surprise party was given Mrs. Katherine Trautwein at the home of her son, Mr. Jacob Trautwein, 814 East Eager street, in honor of her sixty-ninth birthday by her sons, Messrs. Lewis and Jacob Trautwein, and her only daughter, Mrs. Elizabeth Diver. The parlor was elaborately decorated with palms and potted plants, and the table and dining-room with chrysanthemums, carnations and roses. Music was furnished by Mr. W. T. Mooney and Miss Emma Diver. Supper was served and the guests all sang and danced until a late hour. Those present were:
Mr. and Mrs.—
Lewis Trautwein, Jacob Trautwein, George Beigel, William Schuhl, Thomas W. Moore.
Mrs.—
K. Plummer, Annie Kley, N. Count, Hiram O’Brien, Bena Betz, Katie Wiseman, Mary Diver, Nan Agular.
Misses—
Mary Pinfer, Tillie Kley, Ethel Mooney, Gertrude O’Brien, Alma Wills, Estella Diver, Mamie O’Brien, Delia O’Connor.
Messrs.—
William Schissler, Edmund Meisel, Robert Moore, Edmund O’Connor, Jerry Sutton, Albert Moore, John Diver.
[The Baltimore Sun, 23 November 1905, page 6.]

1910 U.S. Census, Baltimore City, Maryland
Ward 7, Enumeration District 82
1514 Eager Street
Dwelling 3, Family 5
Trautwein, Lewis, head, male, white, 30, married one time for 8 years, born in Maryland, both parents born in Germany, speaks English, salesman for bakery, not out of work on April 15, 0 weeks out of work in 1909, can read and write, rents home
Trautwein, Barbara, wife, female, white, 30, married on time for 8 years, born in Maryland, both parents born in Germany, speaks English, housewife, can read and write

TRAUTWEIN.—Suddenly, on July 4, 1913, at his residence, No. 1514 East Eager street, LEWIS, aged 34 years 1 month and 11 days, beloved husband of Barbara M. Trautwein (nee Schafer). Due notice of the funeral will be given. [The Baltimore Sun, 5 July 1913, page 6.]

TRAUTWEIN.—Suddenly, on July 4, 1913, at his residence, No. 1514 East Eager street, LEWIS, aged 34 years 1 month and 11 days, beloved husband of Barbara M. Trautwein (nee Schafer). Relatives and friends of the family are respectfully invited to attend the funeral services at his late residence, No. 1514 East Eager street, on Monday, at 3 o’clock. Interment private. [The Baltimore Sun, 6 July 1913, page 6, and 7 July 1913, page 6.]