RK
Ruby King — 1940 US Census Record
Model Tree available1940 United States Federal Census · Baltimore-County, Maryland
Our Model Tree links this Ruby King across the 1920, 1930 and 1940 US Censuses in Baltimore-County, Maryland (XGBoost, ~Confirmed), with identified parents J & T — first a daughter (b.~1905), then head of a 3-person household.
Age 35
b. ~1905
Female
Daughter
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-County, Maryland |
| Surname | King |
| Given Name | Ruby O. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 35 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Election District 5 |
| 1935 Residence (County) | Baltimore |
| Additional Details | |
| Occupation | Bookkeeper |
| Industry | Tailor shop |
| Class of Worker | PW |
| Hours Worked | 52 |
| Income (1939) | 780 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Bookkeeper |
| Township / Ward | Election District 5 |
| Est. Birth Year | ~1905 |
Household Members
Census records only state relationship to the household head.
Pairwise kinship is derived (~90–95% accurate), not recorded.
Step/blended families and boarders can break it.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Ruby | Age | Birth yr |
|---|---|---|---|---|
| Ruby King | Daughter | — | 35 | ~1905 |
| Mollie King | Spouse | — | 66 | ~1874 |
| T King | Head | — | 65 | ~1875 |
Census Appearances
1920
Baltimore, Maryland
Daughter, age 14
Baltimore, Maryland · implied b. ~1906 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | King |
| Given Name | Ruby V |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Daughter, age 24
Baltimore, Maryland · implied b. ~1906 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | King |
| Given Name | Ruby C. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Beekeeping |
| Industry | Md. Honey Co. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-County, Maryland
Daughter, age 35
Baltimore-County, Maryland · implied b. ~1905 — 3 household members
| Surname | King |
| Given Name | Ruby O. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 35 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Election District 5 |
| 1935 Residence (County) | Baltimore |
| Occupation | Bookkeeper |
| Industry | Tailor shop |
| Class of Worker | PW |
| Hours Worked | 52 |
| Income (1939) | 780 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
Model Tree
An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Our Model Tree links Ruby King across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father J King (~0.92 confidence) and father T King (~0.92 confidence) and father Thomas King (~0.60 confidence) and mother Mollie King (~0.60 confidence) and mother Mollie King (~0.92 confidence) and mother Mollie King (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.81
Father
J King
b. ~1876
Source father
● Household
· direct · ~0.92
Father
T King
b. ~1875
Source father
● Household
· direct · ~0.92
Father
Thomas King
b. ~1895
Source father
● Household
· direct · ~0.6
Mother
Mollie King
b. ~1894
Source mother
● Household
· direct · ~0.6
Mother
Mollie King
b. ~1874
Source mother
● Household
· direct · ~0.92
Mother
Mollie King
b. ~1874
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Ruby King
Daughter · 1940 · age 35 · b. ~1905 · Maryland
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Baltimore-County, Maryland
Open full size
1940 US Federal Census — Baltimore-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01504-00263)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Sadie L. Kellaugh | 66 | Aunt | — | Maryland |
| 42 | John W. Smith | 18 | Hired hand | Laborer | Virginia |
| 43 | John A. Parry | 29 | Head | Auto Mechanic | Tennessee |
| 44 | Gladys M. Parry | 26 | Wife | — | Maryland |
| 45 | Barbara O. Parry | 3 | Daughter | — | Maryland |
| 46 | Nora L. Parry | 1 | Daughter | — | Maryland |
| 47 | Carrie B. Myers | 50 | Mother-in-law | — | Pennsylvania |
| 48 | Mary Park | 60 | Head | Relief Matron | Maryland |
| 49 | Everett R. Grimes | 55 | Head | Pool Room Man | Maryland |
| 50 | Beulah L. Grimes | 57 | Wife | — | Maryland |
| 51 | Ruth Grimes | 23 | Daughter | Saleslady | Maryland |
| 52 | T. Frank King | 65 | Head | — | Maryland |
| 53 | Mollie G. King | 66 | Wife | — | Maryland |
| 54 | Ruby O. King THIS PERSON | 35 | Daughter | Bookkeeper | Maryland |
| 55 | Wilmer E. King | 43 | Head | Farmer | Maryland |
| 56 | Clara J. King | 43 | Wife | — | Maryland |
| 57 | Roland E. King | 18 | Son | — | Maryland |
| 58 | Donald O. King | 16 | Son | — | Maryland |
| 59 | C. Walter Harvey | 40 | Head | Laborer | Maryland |
| 60 | Margaret M. Harvey | 42 | Wife | — | Maryland |
| 61 | Charles L. Harvey | 20 | Son | Laborer | Maryland |
| 62 | Margaret L. Harvey | 18 | Daughter | — | Maryland |
| 63 | Thomas J. Harvey | 12 | Son | — | Maryland |
| 64 | Helen J. Harvey | 7 | Daughter | — | Maryland |
| 65 | Walter Milton Mayer | 30 | Head | Farm Laborer | Maryland |
| 66 | Geneva M. Mayer | 28 | Wife | — | Maryland |
| 67 | Clara Mae Peterson | 48 | Head | Personnel Manager | Iowa |
| 68 | Milton D. Peterson | 49 | Brother | — | Illinois |
| 69 | Ella A. Peterson | 70 | Mother | — | Iowa |
| 70 | Ralph M. Peterson | 42 | Brother | Salesman | Iowa |
| 71 | Ralph M. Jr. Peterson | 8 | Nephew | — | Maryland |
| 72 | William S. Peterson | 5 | Nephew | — | Maryland |
| 73 | James E. Gill | 49 | Head | Farmer | Maryland |
| 74 | James E. Hagan | 21 | Son-in-law | Laborer | Maryland |
| 75 | Helen R. Hagan | 20 | Daughter | — | Maryland |
| 76 | Mary M. Gill | 77 | Mother-in-law | — | Pennsylvania |
| 77 | Herbert C. Myers | 53 | Brother | Laborer | Maryland |
| 78 | Robert L. Caples | 35 | Head | Farmer | Maryland |
| 79 | Anna O. Caples | 33 | Wife | — | Maryland |
| 80 | Shirley A. Caples | 6 | Daughter | — | Maryland |
Pedigree Summary
Ruby
Gen 1 · 6 parents
~0.81
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 United States Federal Census (NARA). Our Model Tree links this person across census decades using XGBoost-based record linkage, with per-link confidence scores. Household corroboration strengthens the signal when co-residents appear on the same census pages in multiple years.
Source: National Archives and Records Administration (NARA)