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John Simms — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this John Simms across the 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 7-person household.
Age 11
b. ~1929
Male
Son
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Simms |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 4 |
| 1935 Residence | Same House |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1929 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Lawrence Simms | Head | — | 34 | ~1906 |
| Agnes Kelly | Other | — | 29 | ~1911 |
| Lawrence Simms | Son | — | 9 | ~1931 |
| James Simms | Son | — | 8 | ~1932 |
| Cath Simms | Spouse | — | 31 | ~1909 |
| John Simms | Son | — | 11 | ~1929 |
| Patricia Simms | Daughter | — | 10 | ~1930 |
Census Appearances
1930
Baltimore, Maryland
Son, age 2
Baltimore, Maryland · implied b. ~1928 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Simms |
| Given Name | John W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Virginia |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Son, age 11
Baltimore-City-County, Maryland · implied b. ~1929 — 7 household members
| Surname | Simms |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Income (1939) | 0 |
| Highest Grade | No 4 |
| 1935 Residence | Same House |
| 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 John Simms across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Simms
Son · 1940 · age 11 · b. ~1929 · Maryland
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Sibling
Patricia Simms
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Simms
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lawrence Simms
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Baltimore-City-County, Maryland
Open full size
1940 US Federal Census — Baltimore-City-County, Maryland
Page Contents
35 people indexed on this census page (nara:1940:m-t0627-01516-00618)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | M. R. Mettee | 29 | Daughter | — | Maryland |
| 2 | J. Rand Mettee | 0 | Grand Son | — | Maryland |
| 3 | Lawrence Simms | 34 | Head | Chauffeur | Maryland |
| 4 | Cath. (X) Simms | 31 | Wife | — | Maryland |
| 5 | John Simms THIS PERSON | 11 | Son | — | Maryland |
| 6 | Patricia Simms | 10 | Daughter | — | Maryland |
| 7 | Lawrence Simms | 9 | Son | — | Maryland |
| 8 | James Simms | 8 | Son | — | Maryland |
| 9 | Agnes Kelly | 29 | Sister In-Law | Cake Wrapper | Maryland |
| 10 | Wesley Gillard | 54 | Head | Salesman | Maryland |
| 11 | Lula (X) Gillard | 53 | Wife | — | Maryland |
| 12 | Bertha Gillard | 16 | Daughter | — | Maryland |
| 13 | Wesley Jr. Gillard | 13 | Son | — | Maryland |
| 14 | Dorothy Hutchenreitz | 27 | Daughter | Maker | Maryland |
| 15 | Dale Hutchenreitz | 6 | Step Grand Son | — | Maryland |
| 16 | A. M. (X) O'Day | 50 | Head | — | Maryland |
| 17 | Paul O'Day | 20 | Son | — | Maryland |
| 18 | Bernard O'Day | 19 | Son | Clerk | Maryland |
| 19 | Mary (X) Epple | 39 | Head | — | Maryland |
| 20 | Maurice Epple | 15 | Son | — | Maryland |
| 21 | Cath. Epple | 11 | Daughter | — | Maryland |
| 22 | Patricia Epple | 9 | Daughter | — | Maryland |
| 23 | John Epple | 7 | Son | — | Maryland |
| 24 | T. F. Cronin | 42 | Head | Bench Hand | Maryland |
| 25 | E. F. (X) Cronin | 41 | Wife | — | Maryland |
| 26 | T. P. Cronin | 4 | Son | — | Maryland |
| 27 | V. L. Cronin | 3 | Daughter | — | Maryland |
| 28 | G. L. Bowers | 42 | Lodger | Laborer | Maryland |
| 29 | James Curran | 62 | Head | Trucker | Maryland |
| 30 | Sarah (X) Curran | 58 | Wife | — | Maryland |
| 31 | Mary Curran | 18 | Daughter | Wrapper | Maryland |
| 32 | Margaret Curran | 15 | Daughter | — | Maryland |
| 33 | Helen Curran | 13 | Daughter | — | Maryland |
| 34 | Charles Mueller | 76 | Father In Law | Baker | Maryland |
| 35 | Carole Mueller | 5 | Step Grand Daughter | — | Maryland |
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)