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Birth date from family Bible.

1900 U.S. Census for Baltimore City, Maryland:
Vol. 11, E.D. 76, Sheet 4, Line 86
Montford Avenue, Baltimore, house number 823
Charles Kopp, white, born June 1857, age 42, born in Maryland. Day laborer. Both parents born in Germany. He owned his house, which was mortgaged. Married 18 years
Minnie Kopp, wife, born June 1862 in Maryland, age 37. She had had 10 children, of whom 5 were living. Both parents born in Germany
William Kopp, son, born December 1881 in Maryland, age 18, boiler maker
Charles Kopp, son, born July 1886 in Maryland, age 13, at school
May Kopp, daughter, born October 1891 in Maryland, age 8, at school
Julia Kopp, daughter, born May 1895 in Maryland, age 5
John R. W. Kopp, son, born December 1897 in Maryland, age 2
All could read and write.

On 9 September 1908, The Baltimore Sun’s marriage licenses column listed:
TUERKE—KAPP.—George F. Tuerke, 26; Mary Kapp, 18. Applicant, Mrs. Gertrude Layfield, 448 NorthLuzerne street.
[The Baltimore Sun, 9 September 1908, page 7.]

Marriage date to George Tuerke from family Bible.

1910 U.S. Census, Baltimore City, Maryland
1st Ward, Enumeration District 8, Sheet 2B
2707 Eastern Avenue
Dwelling 31, Family 36
Tuerke, George R., head, male, white, 22, married one time, married for 2 years, born in Maryland, both parents born in Maryland, speaks English, metal worker in steel works, wage worker, not out of work on April 15, can read and write, rents house
Tuerke, Mammie, wife, female, white, 19, married one time, married for 2 years, mother of one child who survives, born in Maryland, both parents born in Maryland, speaks English, no occupation, can read and write
Tuerke, Howard A., son, male, white, 9/12, single, born in Maryland, both parents born in Maryland, no occupation
Living in this house is another family of Charles Wendt, 49; Sophia Wendt, 42; and Marie E. Miller, 76.

1920 U.S. Census, Baltimore City, Maryland
Enumeration District 9, 1st Ward, Sheet 18
2717 Eastern Avenue
Tuerke, Mary, head, owned, mortgaged, female, white, age 28, widowed, can read and write, born in Maryland, both parents born in Maryland, speaks English, pillmaker for drug co., wage worker
Tuerke, Clara W., daughter, female, white, 8, single, in school, born in Maryland, both parents born in Maryland, no occupation
Davis, Joseph H., brother-in-law, male, white, 23, married, can read and write, born in Virginia, both parents born in Virginia, speaks English, engineer for locomotive, wage worker
Davis, Julia, sister, female, white, 24, married, can read and write, born in Maryland, both parents born in Maryland, speaks English, no occupation

On 22 October 1922, The Baltimore Sun published:
The Blaumar Realty Company reports the sale of property at 2618 Fleet street to Frank and Emma Pries; also the sale of property at 821 South Kenwood avenue for Frank Pruchniewski and wife to W. Ludwig and wife, and 2717 Eastern avenue for Mary T. Tuerke to John Weber and wife.
[The Baltimore Sun, 22 October 1922, page P3P16.]

1930 U.S. Census, Baltimore City, Maryland
1st Ward, Block 113, Enumeration District 4-2, Sheet 4B
732 South Potomac Street
Dwelling 63, Family 67
Young, J. L., head, owns home valued at $4,450, owns radio set, male, white, married, age at first marriage 30, not in school, can read and write, born in Pennsylvania, both parents born in Pennsylvania, speaks English, plasterer, contractor, at work previous day, veteran of the World War
Young, Mary, wife, female, white, 38, married age at first marriage 30, not in school, can read and write, born in Maryland, both parents born in Maryland, speaks English, no occupation
Young, Alberta [sic], daughter, female, white, 7, single, in school, can read and write, born in Maryland, father born in Pennsylvania, mother born in Maryland, speaks English, no occupation
Young, James, son, male, white, 5, single, in school, can read and write, born in Maryland, father born in Pennsylvania, mother born in Maryland, speaks English, no occupation
Tuerke, Clara, step daughter, female, white, 18, single, not in school, can read and write, born in Maryland, both parents born in Maryland, speaks English, no occupation

Mary L. Young was mentioned in the 3 February 1938 will of her mother Minnie Donaldson. She was to receive one-seventh of her mother’s real and personal estate. The will was proved on 5 August 1939. [Baltimore City, Maryland, Wills, J.H.B. 193, pages 277–279.]

On 1 July 1939, in the settlement of the estate of her mother Minnie Donaldson, Mary L. Young received one-seventh of the estate. [Baltimore City, Maryland, Administration Accounts J.H.B. No. 358, pages 91–93.]

On 1 June 1944. James L. Young married Mary Turk (maiden name Mary Kopp) in Alexandria, Virginia. He was 52, white, single, not previously married, occupation plasterer, born in Shawuburry, Pennsylvania, father Robert P., mother Laura Wagner, residence Beverley Hills, Baltimore, Maryland. She was 52, white, widowed, once previously married, no occupation, born in Baltimore, Maryland, father Charles M. Kopp, mother Wilheima Straline, residence Beverley Hills, Baltimore, Maryland. [State of Virginia, Certificate of Marriage 12347.]

Death date from family Bible.