MK
Mary Kirby — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Richmond-City-County, Virginia
Our Model Tree links this Mary Kirby across the 1920, 1930 and 1940 US Censuses in Richmond-City-County, Virginia (XGBoost, ~Confirmed) — first a spouse (b.~1891), then head of a 5-person household.
Age 49
b. ~1891
Female
Spouse
Born: West Virginia
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Richmond-City-County, Virginia |
| Surname | Kirby |
| Given Name | Mary J. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | West Virginia |
| 1935 Residence (City) | Richmond |
| 1935 Residence (County) | Richmond City |
| Additional Details | |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Highest Grade | C 2 |
| 1935 Residence | Same house |
| Birth State | West Virginia |
| Birth Country | United States |
| Birthplace (normalized) | west virginia |
| Township / Ward | Richmond |
| Est. Birth Year | ~1891 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Kirby | Daughter | — | 8 | ~1932 |
| John Kirby | Son | — | 16 | ~1924 |
| William Kirby | Head | — | 53 | ~1887 |
| Mary Kirby | Spouse | — | 49 | ~1891 |
| William Kirby | Son | — | 20 | ~1920 |
Census Appearances
1920
Henrico, Virginia
Spouse, age 22
Henrico, Virginia · implied b. ~1898 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kirby |
| Given Name | Mary E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Married |
| Birthplace | West Virginia |
| Father's Birthplace | Virginia |
| Mother's Birthplace | West Virginia |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | West Virginia |
| Birth Country | United States |
| Birthplace (normalized) | west virginia |
1930
Henrico, Virginia
Other, age 34
Henrico, Virginia · implied b. ~1896 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kirby |
| Given Name | Mary G. |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | West Virginia |
| Age at First Marriage | 25 |
| Father's Birthplace | West Virginia |
| Mother's Birthplace | West Virginia |
| Can Read/Write | Yes |
| Birth State | West Virginia |
| Birth Country | United States |
| Birthplace (normalized) | west virginia |
1940
Richmond-City-County, Virginia
Spouse, age 49
Richmond-City-County, Virginia · implied b. ~1891 — 5 household members
| Surname | Kirby |
| Given Name | Mary J. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | West Virginia |
| 1935 Residence (City) | Richmond |
| 1935 Residence (County) | Richmond City |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Highest Grade | C 2 |
| 1935 Residence | Same house |
| Birth State | West Virginia |
| Birth Country | United States |
| Birthplace (normalized) | west virginia |
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 Mary Kirby across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Kirby
Spouse · 1940 · age 49 · b. ~1891 · Virginia
★ 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 — Richmond-City-County, Virginia
Open full size
1940 US Federal Census — Richmond-City-County, Virginia
Page Contents
37 people indexed on this census page (nara:1940:m-t0627-04323-00377)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Mary A. Harris | 17 | Daughter | — | Virginia |
| 42 | Lucy M. Harris | 15 | Daughter | — | Virginia |
| 43 | Alvis M. Clement | 27 | Son-in-law | Accountant | Virginia |
| 44 | Frances H. Clement | 27 | Daughter | File Clerk | Virginia |
| 45 | Mary W. Swann | 55 | Head | Proof Reader | Maryland |
| 46 | Lucy D. Swann | 83 | Mother | — | Maryland |
| 47 | Louise W. Martin | 57 | Niece | Practical Nurse | Maryland |
| 48 | John H. Kirk | 23 | Lodger | Radio Announcer | Virginia |
| 50 | William L. Kirby | 53 | Head | Executive | Delaware |
| 51 | Mary J. Kirby THIS PERSON | 49 | Wife | — | West Virginia |
| 52 | William Jr. Kirby | 20 | Son | — | Virginia |
| 53 | John M. Kirby | 16 | Son | — | Virginia |
| 54 | Mary G. Kirby | 8 | Daughter | — | Virginia |
| 56 | J. Rayon Salley | 50 | Head | Department Manager | South Carolina |
| 57 | Katheryn J. Salley | 45 | Wife | — | South Carolina |
| 58 | J. Rayon Jr. Salley | 16 | Son | — | Virginia |
| 59 | John J. Salley | 13 | Son | — | Virginia |
| 60 | G. Elmore Salley | 10 | Son | — | North Carolina |
| 61 | Elnora Pace | 19 | Servant | Servant | Virginia |
| 62 | Harry B. Baker | 71 | Head | Medical Doctor | Virginia |
| 63 | Jeanette H. Baker | 69 | Wife | — | West Virginia |
| 64 | John A. Baker | 27 | Son | Electrical Engineer | Virginia |
| 65 | Catherine F. Baker | 22 | Daughter | — | Virginia |
| 66 | Henry K. Mcconnell | 52 | Head | Vice President | Kentucky |
| 67 | Bessie B. Mcconnell | 50 | Wife | — | Kentucky |
| 68 | Jeannette Mcconnell | 27 | Daughter | — | Kentucky |
| 69 | Nan R. Mcconnell | 20 | Daughter | — | Kentucky |
| 70 | Edgar O. Hubbard | 25 | Head | Optometrist | Virginia |
| 71 | Ara C. Hubbard | 64 | Mother | — | Virginia |
| 72 | Bernice L. Sykes | 36 | Sister | Stenographer | West Virginia |
| 73 | Lester A. Sykes | 5 | Niece | — | Minnesota |
| 74 | J. Norman Gibson | 48 | Head | Secretary | Maryland |
| 75 | Florence L. Gibson | 45 | Wife | Soloist | Maryland |
| 76 | J. Norman Jr. Gibson | 22 | Son | Book Keeper | Maryland |
| 77 | Elizabeth B. Gibson | 19 | Daughter | — | Maryland |
| 79 | J. Herbert Ellis | 51 | Head | Salesman | Virginia |
| 80 | Mae A. Ellis | 42 | Wife | — | Virginia |
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)