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John Montgomery — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Charles-County, Maryland
Our Model Tree links this John Montgomery across the 1920, 1930 and 1940 US Censuses in Charles-County, Maryland (XGBoost, ~Confirmed) — first a head (b.~1861), then head of a 5-person household.
Age 79
b. ~1861
Male
Head
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Charles-County, Maryland |
| Surname | Montgomery |
| Given Name | John D. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 79 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Charles |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Farmer |
| Township / Ward | Election District 8 Bryantown |
| Est. Birth Year | ~1861 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| John Montgomery | Head | — | 79 | ~1861 |
| Steven Montgomery | Son | — | 39 | ~1901 |
| Peyton Montgomery | Son | — | 43 | ~1897 |
| Mcclenden Montgomery | Son | — | 35 | ~1905 |
| Eliza Montgomery | Spouse | — | 79 | ~1861 |
Census Appearances
1920
Charles, Maryland
Head, age 58
Charles, Maryland · implied b. ~1862
●
Primary link
· ~Confirmed · 1 source
XGBoost
| Surname | Montgomery |
| Given Name | John B. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 58 |
| Marital Status | Married |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Charles, Maryland
Head, age 69
Charles, Maryland · implied b. ~1861 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Montgomery |
| Given Name | John D |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 69 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 21 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | VVVV |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Charles-County, Maryland
Head, age 79
Charles-County, Maryland · implied b. ~1861 — 5 household members
| Surname | Montgomery |
| Given Name | John D. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 79 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Charles |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Maryland |
| 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 Montgomery across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Montgomery
Head · 1940 · age 79 · b. ~1861 · Maryland
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Charles-County, Maryland
Open full size
1940 US Federal Census — Charles-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01546-00417)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Step-Son Holy | None | M | — | — |
| 2 | Nannie Yates | 75 | Head | — | Maryland |
| 3 | Zebra Burkett | 28 | Head | Labour | Maryland |
| 4 | Begonia Burkett | 22 | Daughter | — | Maryland |
| 5 | Mervin Burkett | 28 | Son | Labour | Maryland |
| 6 | Harriet Burkett | 34 | Daughter | Maid | Maryland |
| 7 | Francis Cooksey | 31 | Head | Farmer | Maryland |
| 8 | Grace Cooksey | 29 | Wife | — | Maryland |
| 9 | Francis Cooksey | 10 | Son | — | Maryland |
| 10 | James Cooksey | 8 | Son | — | Maryland |
| 11 | Catherine Cooksey | 6 | Daughter | — | Maryland |
| 12 | Warren Cooksey | 4 | Son | — | Maryland |
| 13 | Robert Cooksey | 0 | Son | — | Maryland |
| 14 | James Robey | 51 | Head | Farmer | Maryland |
| 15 | Isabelle Robey | 46 | Wife | — | Maryland |
| 16 | James A. Robey | 24 | Son | Labour | Maryland |
| 17 | Charles R. Robey | 22 | Son | Labour | Maryland |
| 18 | John D. Montgomery THIS PERSON | 79 | Head | Farmer | Maryland |
| 19 | Eliza Montgomery | 79 | Wife | — | Maryland |
| 20 | Peyton Montgomery | 43 | Son | Labour | Maryland |
| 21 | Mcclenden Montgomery | 35 | Son | — | Maryland |
| 22 | Steven Montgomery | 39 | Son | Labour | Maryland |
| 23 | Andrew K. Simpson | 46 | Head | Farmer | Maryland |
| 24 | Myrtle Simpson | 40 | Wife | — | Virginia |
| 25 | Thomas H. Simpson | 19 | Son | Labour | Maryland |
| 26 | Joseph C. Simpson | 17 | Son | Labour | Maryland |
| 27 | Andrew C. Simpson | 15 | Son | — | Maryland |
| 28 | Franklin Cooksey | 62 | Head | Farmer | Maryland |
| 29 | Annie Cooksey | 65 | Wife | — | Maryland |
| 30 | Richard Plumttani | 18 | Nephew | Labour | Maryland |
| 31 | Agustus Bowling | 50 | Head | Labour | Maryland |
| 32 | Agnes Bowling | 50 | Wife | House Work | Maryland |
| 33 | Joseph Johnson | 9 | Grandson | — | Wash. D.C. |
| 34 | James H. Montgomery | 49 | Head | Farmer | Maryland |
| 35 | Francis Montgomery | 18 | Son | Labour | Maryland |
| 36 | Harold Montgomery | 17 | Son | Labour | Maryland |
| 37 | James A. Montgomery | 13 | Son | — | Maryland |
| 38 | Annie L. Montgomery | 9 | Daughter | — | Maryland |
| 39 | Joy Johnson | 37 | Head | Waiter | Maryland |
| 40 | Saba Johnson | 36 | Wife | — | 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)