JT
John Tracy — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Montgomery-County, Pennsylvania
Our Model Tree links this John Tracy across the 1930 and 1940 US Censuses in Montgomery-County, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1916), then head of a 7-person household.
Age 24
b. ~1916
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Montgomery-County, Pennsylvania |
| Surname | Tracy |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Springfield |
| 1935 Residence (County) | Montgomery |
| Additional Details | |
| Occupation | Gardener |
| Industry | Country Club |
| Class of Worker | PW |
| Hours Worked | 10 |
| Income (1939) | 23 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Gardener |
| Township / Ward | Springfield |
| Est. Birth Year | ~1916 |
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 |
|---|---|---|---|---|
| Margaret Tracy | Head | — | 50 | ~1890 |
| Claire Tracy | Daughter | — | 10 | ~1930 |
| Edward Tracy | Son | — | 28 | ~1912 |
| Eugene Tracy | Son | — | 12 | ~1928 |
| Thomas Tracy | Son | — | 17 | ~1923 |
| John Tracy | Son | — | 24 | ~1916 |
| Margaret Tracy | Daughter | — | 19 | ~1921 |
Census Appearances
1930
Montgomery, Pennsylvania
Son, age 14
Montgomery, Pennsylvania · implied b. ~1916 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Treacy |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Montgomery-County, Pennsylvania
Son, age 24
Montgomery-County, Pennsylvania · implied b. ~1916 — 7 household members
| Surname | Tracy |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Springfield |
| 1935 Residence (County) | Montgomery |
| Occupation | Gardener |
| Industry | Country Club |
| Class of Worker | PW |
| Hours Worked | 10 |
| Income (1939) | 23 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 Tracy across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Tracy
Son · 1940 · age 24 · b. ~1916 · Pennsylvania
★ You are viewing this record
Sibling
Edward Tracy
Sibling · 1940 · age 28
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Claire Tracy
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Tracy
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Tracy
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eugene Tracy
Sibling · 1940 · age 12
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 — 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-t0627-03584-00524)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Wilbur C. Leidy | 46 | Head | Chauffeur | Pennsylvania |
| 42 | Frances R. Leidy | 35 | Wife | — | Pennsylvania |
| 43 | Alice E. Leidy | 12 | Daughter | — | Pennsylvania |
| 44 | Norma F. Leidy | 6 | Daughter | — | Pennsylvania |
| 45 | James Wilkinson | 65 | Head | Gardener | Northern Ireland |
| 46 | Elizabeth S. Wilkinson | 30 | Daughter | Nurse | Pennsylvania |
| 47 | Frank Katona | 43 | Head | Baker | Austria |
| 48 | Mary Katona | 38 | Wife | Housework | Germany |
| 49 | Margaret Tracy | 50 | Head | — | Pennsylvania |
| 50 | Edward Tracy | 28 | Son | Superintendent | Pennsylvania |
| 51 | John Tracy THIS PERSON | 24 | Son | Gardener | Pennsylvania |
| 52 | Margaret Tracy | 19 | Daughter | Secretary | Pennsylvania |
| 53 | Thomas Tracy | 17 | Son | — | Pennsylvania |
| 54 | Eugene Tracy | 12 | Son | — | Pennsylvania |
| 55 | Claire Tracy | 10 | Daughter | — | Pennsylvania |
| 56 | Francis Klufen | 40 | Head | Laundress | Northern Ireland |
| 57 | David Klufen | 18 | Son | — | Pennsylvania |
| 58 | Frederick Klufen | 14 | Son | — | Pennsylvania |
| 59 | Margaret Klufen | 12 | Daughter | — | Pennsylvania |
| 60 | Joseph Hamilton | 76 | Head | — | Northern Ireland |
| 61 | Cecelia Hamilton | 62 | Wife | — | Eire |
| 62 | Dorothy Hamilton | 37 | Daughter | Secretary | Pennsylvania |
| 63 | Lillian Hamilton | 26 | Daughter | Secretary | Pennsylvania |
| 64 | Annie Sullivan | 78 | Head | — | Northern Ireland |
| 65 | Rose Sullivan | 45 | Daughter | — | Pennsylvania |
| 66 | Florence Sullivan | 32 | Daughter | Bookkeeper | Pennsylvania |
| 67 | Francis Boyle | 23 | Head | Chauffeur | Pennsylvania |
| 68 | Annie Boyle | 56 | Mother | — | Northern Ireland |
| 69 | Helen Boyle | 20 | Daughter | Childs Nurse | Pennsylvania |
| 70 | James Boyle | 14 | Son | — | Pennsylvania |
| 71 | Richard Boyle | 60 | Son | — | Pennsylvania |
| 72 | Gerald F. Rorer | 32 | Head | Chemist | Pennsylvania |
| 73 | Mary Rorer | 29 | Wife | — | Pennsylvania |
| 74 | Richard Boyle | 31 | Head | Maintenance | Pennsylvania |
| 75 | Winifred Boyle | 32 | Wife | — | Pennsylvania |
| 76 | Richard Boyle | 8 | Son | — | Pennsylvania |
| 77 | Dorothy Boyle | 4 | Daughter | — | Pennsylvania |
| 78 | John Mcglade | 56 | Head | Fireman | Ireland |
| 79 | Hannah Mcglade | 56 | Wife | — | Eire |
| 80 | John Mcglade | 12 | Son | — | Pennsylvania |
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)