JL
Joseph Lawrence — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Philadelphia-County, Pennsylvania
Our Model Tree links this Joseph Lawrence across the 1930 and 1940 US Censuses in Philadelphia-County, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1930), then head of a 8-person household.
Age 10
b. ~1930
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Philadelphia-County, Pennsylvania |
| Surname | Lawrence |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Philadelphia |
| 1935 Residence (County) | Philadelphia |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | 3 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Philadelphia |
| Est. Birth Year | ~1930 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Joseph | Age | Birth yr |
|---|---|---|---|---|
| William Lawrence | Son | — | 21 | ~1919 |
| Kathleen Lawrence | Daughter | — | 19 | ~1921 |
| John Lawrence | Head | — | 48 | ~1892 |
| Joseph Lawrence | Son | — | 10 | ~1930 |
| Bernard Coyle | Other | — | 28 | ~1912 |
| Mary Lawrence | Spouse | — | 48 | ~1892 |
| Mary Lawrence | Daughter | — | 12 | ~1928 |
| Margaret Coyle | Daughter | — | 22 | ~1918 |
Census Appearances
1930
Philadelphia, Pennsylvania
Son, age
Philadelphia, Pennsylvania · implied b. ~1930 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lawrence |
| Given Name | Joseph F |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Philadelphia-County, Pennsylvania
Son, age 10
Philadelphia-County, Pennsylvania · implied b. ~1930 — 8 household members
| Surname | Lawrence |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Philadelphia |
| 1935 Residence (County) | Philadelphia |
| Class of Worker | 0 |
| Highest Grade | 3 |
| 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 Joseph Lawrence across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Joseph Lawrence
Son · 1940 · age 10 · b. ~1930 · Pennsylvania
★ You are viewing this record
Sibling
Mary Lawrence
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kathleen Lawrence
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Coyle
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Lawrence
Sibling · 1940 · age 21
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 — Philadelphia-County, Pennsylvania
Open full size
1940 US Federal Census — Philadelphia-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03733-00776)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Margaret Zannon | 35 | Wife | Housewife | Pennsylvania |
| 42 | William Zannon | 9 | Son | — | Pennsylvania |
| 43 | Helen Zannon | 8 | Daughter | — | Pennsylvania |
| 44 | Harry Zannon | 4 | Son | — | Pennsylvania |
| 45 | Cassie W Smith | 55 | Head | Housewife | Pennsylvania |
| 46 | Eleanor Smith | 27 | Niece | Stenographer | Pennsylvania |
| 47 | Catherine Smith | 24 | Niece | Investigator | Pennsylvania |
| 48 | Louis F Bromley | 74 | Head | — | Pennsylvania |
| 49 | Sadie Bromley | 72 | Wife | Housewife | Pennsylvania |
| 50 | Stella Hibbs | 63 | Sister-in-law | Mileage Checker | Pennsylvania |
| 51 | John Lawrence | 48 | Head | Checker | Free State |
| 52 | Mary Lawrence | 48 | Wife | Housewife | Free State |
| 53 | William Lawrence | 21 | Son | Sales Clerk | Pennsylvania |
| 54 | Kathleen Lawrence | 19 | Daughter | Stenographer | Pennsylvania |
| 55 | Mary Lawrence | 12 | Daughter | — | Pennsylvania |
| 56 | Joseph Lawrence THIS PERSON | 10 | Son | — | Pennsylvania |
| 57 | Bernard Coyle | 28 | Son-in-law | Metal Worker | Free State |
| 58 | Margaret Coyle | 22 | Daughter | Housewife | Pennsylvania |
| 59 | William Davidson | 73 | Head | — | Ireland |
| 60 | Margaret E Davidson | 68 | Wife | Housewife | Pennsylvania |
| 61 | Marion Quigley | 39 | Lodger | Housewife | Pennsylvania |
| 62 | Margaret Quigley | 9 | Lodger | — | Pennsylvania |
| 63 | Jane Welsh | 51 | Head | Teacher | Pennsylvania |
| 64 | John M Ryan | 42 | Nephew | Electrical Engineer | Pennsylvania |
| 65 | Aaron Kimmel | 69 | Head | Furrier | Russia |
| 66 | Rachel Kimmel | 59 | Wife | Housewife | Russia |
| 67 | Harry Kimmel | 35 | Son | Presser | Pennsylvania |
| 68 | William Kimmel | 29 | Son | Clerk | Sales | Pennsylvania |
| 69 | Sarah Kimmel | 24 | Daughter | Stenographer | Pennsylvania |
| 70 | Dailene Kimmel | 21 | Daughter | Stenographer | Pennsylvania |
| 71 | Roy C Johnson | 35 | Head | Draftsman | Pennsylvania |
| 72 | Mabel Johnson | 30 | Wife | Housewife | Pennsylvania |
| 73 | Roy Jr. Johnson | 7 | Son | — | Pennsylvania |
| 74 | Joan Johnson | 5 | Daughter | — | Pennsylvania |
| 75 | Leonor Johnson | 3 | Mother | — | Pennsylvania |
| 76 | Frank Brigidi | 27 | Head | Press Feeder | Rhode Island |
| 77 | Marion Brigidi | 29 | Wife | Housewife | Pennsylvania |
| 78 | Frank Jr. Brigidi | 4 | Son | — | Pennsylvania |
| 79 | Claudia Brigidi | 2 | Daughter | — | Pennsylvania |
| 80 | Louisa Arnholt | 60 | Head | Saleslady | 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)