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John Kerr — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Montgomery-County, Pennsylvania
Our Model Tree links this John Kerr across the 1930 and 1940 US Censuses in Montgomery-County, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1907), then head of a 6-person household.
Age 33
b. ~1907
Male
Head
Born: Northern Ireland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Montgomery-County, Pennsylvania |
| Surname | Kerr |
| Given Name | John |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Northern Ireland |
| 1935 Residence (City) | Springfield |
| 1935 Residence (County) | Montgomery |
| Naturalization Status | Alien |
| Additional Details | |
| Occupation | Blacksmith |
| Industry | Nursery |
| Class of Worker | PW |
| Hours Worked | 24 |
| Income (1939) | 302 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birthplace (normalized) | northern ireland |
| Occupation | Blacksmith |
| Township / Ward | Springfield |
| Est. Birth Year | ~1907 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Mary Kerr | Daughter | — | 10 | ~1930 |
| Teresa Kerr | Daughter | — | 8 | ~1932 |
| Elizabeth Kerr | Daughter | — | 1 | ~1939 |
| Margaret Kerr | Daughter | — | 5 | ~1935 |
| Sarah Kerr | Spouse | — | 30 | ~1910 |
| John Kerr | Head | — | 33 | ~1907 |
Census Appearances
1930
Philadelphia, Pennsylvania
Head, age 24
Philadelphia, Pennsylvania · implied b. ~1906 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kerr |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Married |
| Birthplace | Northern Ireland |
| Naturalization Status | Alien |
| Year of Immigration | 1925 |
| Age at First Marriage | 24 |
| Father's Birthplace | Northern Ireland |
| Mother's Birthplace | Northern Ireland |
| Occupation | Blacksmith |
| Industry | Blacksmithing |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Home Value / Rent | 35 |
| Veteran | No |
| Birthplace (normalized) | northern ireland |
1940
Montgomery-County, Pennsylvania
Head, age 33
Montgomery-County, Pennsylvania · implied b. ~1907 — 6 household members
| Surname | Kerr |
| Given Name | John |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Northern Ireland |
| 1935 Residence (City) | Springfield |
| 1935 Residence (County) | Montgomery |
| Naturalization Status | Alien |
| Occupation | Blacksmith |
| Industry | Nursery |
| Class of Worker | PW |
| Hours Worked | 24 |
| Income (1939) | 302 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birthplace (normalized) | northern ireland |
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 Kerr across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Kerr
Head · 1940 · age 33 · b. ~1907 · Pennsylvania
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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 — Montgomery-County, Pennsylvania
Open full size
1940 US Federal Census — Montgomery-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03584-00522)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Harry Duchapruny|Duchapruny | 14 | son | — | Pennsylvania |
| 42 | Ruth Duchapruny|Duchapruny | 11 | daughter | — | Pennsylvania |
| 43 | Herbert Duchapruny|Duchapruny | 9 | son | — | Pennsylvania |
| 44 | Franklin Duchapruny|Duchapruny | 7 | son | — | Pennsylvania |
| 45 | James Mcgovern | 50 | head | — | Eire |
| 46 | Bridget Mcgovern | 40 | wife | — | Eire |
| 47 | Rose Mcgovern | 16 | daughter | — | Pennsylvania |
| 48 | Richard Roman | 33 | head | Tile Setter | Italy |
| 49 | Hilda S Roman | 33 | wife | Operator | Italy |
| 50 | Richard Roman | 6 | son | — | Pennsylvania |
| 51 | Joan Roman | 5 | daughter | — | Pennsylvania |
| 52 | Marilyn Roman | 3 | daughter | — | Pennsylvania |
| 53 | Joseph Rainey | 76 | head | Watchman | Eire |
| 54 | Elizabeth R Rainey | 42 | daughter | Clerk | Pennsylvania |
| 55 | Florence Ramson | 32 | daughter | — | Pennsylvania |
| 56 | Florence Ramson | 13 | granddaughter | — | Pennsylvania |
| 57 | Lorraine Ramson | 11 | granddaughter | — | Pennsylvania |
| 58 | Francis Harris | 35 | head | Chauffeur | Pennsylvania |
| 59 | Adelaide Harris | 34 | wife | — | Pennsylvania |
| 60 | Dorothy Harris | 14 | daughter | — | Pennsylvania |
| 61 | Thomas Harris | 12 | son | — | Pennsylvania |
| 62 | Frank Harris | 9 | son | — | Pennsylvania |
| 63 | Albert Kerper | 57 | head | House Sergeant | Pennsylvania |
| 64 | Agnes Kerper | 57 | wife | — | New Jersey |
| 65 | Harold Kerper | 31 | son | Teacher | Pennsylvania |
| 66 | Lawrence Kerper | 26 | son | Steam Fitter | Pennsylvania |
| 67 | Charles Kerper | 21 | son | Truck Driver | Pennsylvania |
| 68 | John Kerr THIS PERSON | 33 | head | Blacksmith | Northern Ireland |
| 69 | Sarah Kerr | 30 | wife | — | Northern Ireland |
| 70 | Mary E Kerr | 10 | daughter | — | Pennsylvania |
| 71 | Teresa Kerr | 8 | daughter | — | Pennsylvania |
| 72 | Margaret Kerr | 5 | daughter | — | Pennsylvania |
| 73 | Elizabeth A Kerr | 1 | daughter | — | Pennsylvania |
| 74 | Frank Weber | 62 | head | — | Germany |
| 75 | Sophie Weber | 62 | wife | — | Germany |
| 76 | John Weber | 35 | son | Clerk | Pennsylvania |
| 77 | Gertrude Weber | 28 | daughter | — | Pennsylvania |
| 78 | Joseph Weber | 25 | son | Truck Driver | Pennsylvania |
| 79 | Carl Weber | 21 | son | Clerk | Pennsylvania |
| 80 | Bridget Duff | 53 | head | — | Eire |
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)