1900 U.S. Census, Baltimore City, Maryland
4th Precinct, Enumeration District 62, Sheet 9
316 Ann Street, Dwelling 150, Family 185
Woelfel, George, head, white, male, born July 1840, 59, married, born in Germany, both parents born in Germany, immigrated in 1865, 35 years in the U.S., naturalized citizen, store keeper, 0 months not employed, can read and write, speaks English, lives in house
Woelfel, Elizabeth, wife, white, female, born July 1844, 55, married, mother of 4 children of whom 4 are living, born in Germany, both parents born in Germany, immigrated in 1865, 35 years in the U.S., can read and write, speaks English
Woelfel, Annie, daughter, white, female, born September 1879, 20, single, born in Maryland, both parents born in Germany, can read and write, speaks English
Woelfel, George, son, white, male, born March 1874, 26, married, married for 1 year, born in Maryland, both parents born in Germany, book keeper, 0 months not employed, can read and write, speaks English
Woelfel, Elizabeth, daughter in law, white, female, born December 1877, 22, married, married for 1 year, mother of 1 child of which 1 child is living, born in Maryland, both parents born in Germany, can read and write, speaks English
Woelfel, Bernard, grandson, white, male, born January 1900, 4/12, single, born in Maryland, both parents born in Maryland, cannot read or write, does not speak English
Woelfel, Barbara, daughter, white, female, born September 1883, 16, single, born in Maryland, father born in Maryland, mother born in Germany, can read and write, speaks English
Woelfel, Mamie, daughter, white, male [sic], born January 1887, 13, single, born in Maryland, father born in Maryland, mother born in Germany, at school, attended school for 9 months, can read and write, speaks English
Vernon, Mary, boarder, white, female, born February 1837, 63, single, born in Ireland, both parents born in Ireland, immigrated in 1848, 52 years in the U.S., music teacher, 0 months not employed, can read and write, speaks English

1920 U.S. Census, Baltimore City, Maryland
6th Ward, Enumeration District 68, page 3B
16 N. Luzerne Avenue
Dwelling 65, Visited Number 71
Woelfel, Elizabeth, head, owns free of mortgage, female, white, 75, widowed, immigrated in 1863, naturalized in 1868, can read and write, born in Bavaria, tongue German, both parents born in Bavaria and spoke German, speaks English, no occupation
Woelfel, Mamie A., daughter, female, white, 33, single, can read and write, born in Maryland, both parents born in Bavaria and spoke German, speaks English, no occupation
Woelfel, George, male, white, 37, divorced, can read and write, born in Maryland, both parents born in Maryland, speaks English, collector for furniture store, speaks English

1930 U.S. Census, Baltimore City, Maryland:
6th Ward, Block 149, Enumeration District 4-531, Supervisor’s District 4, Sheet 11B
Enumerated on 10 April 1930
16 Luzerne Avenue
Dwelling 207, Household 238
Woelfel, Mamie, head, owner, $3,500 in real property, owns radio set, not on farm, female, white, age 43, single, not in school, can read and write, born in Maryland, both parents born in Germany, speaks English, occupation homemaker
Mathis, Barbara, sister, female, white, age 46, widowed, not in school, can read and write, born in Maryland, both parents born in Germany, speaks English, no occupation

Mamie Woelfel attended the funeral of Catherine Schnieder Thomas in 1957, giving her address as 16 N. Luzerne Avenue.

On 10 July 1961, a death notice in The Baltimore Sun stated:
WOELFEL.—On July 7, 1961, MARIE (MAMIE), of 16 North Luzerne avenue, beloved daughter of the late George and Elizabeth Woelfel and beloved sister of Mrs. Anna J. Schmitt, of New York and Mrs. Barbara Mathis.
Funeral services from the Bernard Dabrowski Funeral Home, 2818 East Baltimore street, on Wednesday at 8:15 A.M. Requiem High Mass at Saint Elizabeth’s Church at 9 A.M. Interment in Holy Redeemer Cemetery. Visiting hours from 2 til 9 P.M.
[The Baltimore Sun, 10 July 1961, page 22.]