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Lawrence Davis — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Lawrence Davis across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1866), then head of a 5-person household.
Age 74
b. ~1866
Male
Head
Born: Pennsylvania
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Davis |
| Given Name | Lawrence N. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 74 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Mt. Lebanon Twp |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Hours Worked | 0 |
| Highest Grade | Hs 3 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Mt Lebanon Twp |
| Est. Birth Year | ~1866 |
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 Lawrence | Age | Birth yr |
|---|---|---|---|---|
| Hazel Mclaughlin | Daughter | — | 20 | ~1920 |
| Marie Davis | Daughter | — | 40 | ~1900 |
| Lawrence Davis | Head | — | 74 | ~1866 |
| Mary Davis | Spouse | — | 72 | ~1868 |
| Rita Mclaughlin | Daughter | — | 51 | ~1889 |
Census Appearances
1920
Allegheny, Pennsylvania
Head, age 54
Allegheny, Pennsylvania · implied b. ~1866 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Lawrence H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Servant |
| Industry | Private family |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Head, age 64
Allegheny, Pennsylvania · implied b. ~1866 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Laurence T. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 64 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Age at First Marriage | 22 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Architect |
| Industry | Own Practice |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 38000 |
| Radio Set | R |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Head, age 74
Allegheny-County, Pennsylvania · implied b. ~1866 — 5 household members
| Surname | Davis |
| Given Name | Lawrence N. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 74 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Mt. Lebanon Twp |
| 1935 Residence (County) | Allegheny |
| Hours Worked | 0 |
| Highest Grade | Hs 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 Lawrence Davis across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Lawrence Davis
Head · 1940 · age 74 · b. ~1866 · Pennsylvania
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Allegheny-County, Pennsylvania
Open full size
1940 US Federal Census — Allegheny-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03411-00714)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Lawrence N. Davis THIS PERSON | 74 | Head | — | Pennsylvania |
| 2 | Mary Davis | 72 | Wife | — | Pennsylvania |
| 3 | Marie Davis | 40 | Daughter | — | Pennsylvania |
| 4 | Rita D. Mclaughlin | 51 | Daughter | — | Pennsylvania |
| 5 | Hazel Mclaughlin | 20 | Daughter | Secretary | Pennsylvania |
| 6 | End Of Block | None | — | — | — |
| 7 | W. Ward Powell | 49 | Head | Dist. Manager | Pennsylvania |
| 8 | Martha S. Powell | 49 | Wife | — | Pennsylvania |
| 9 | W. Jr. Powell | 17 | Son | — | Pennsylvania |
| 10 | Aranka Powell | 12 | Daughter | — | Pennsylvania |
| 11 | W. J. Shaw | 78 | Father-in-law | — | Ohio |
| 12 | Leonard Gray | 65 | Servant | Servant | Virginia |
| 13 | Alvar J. Hellerstedt | 48 | Head | C P A | Kansas |
| 14 | Forest F. Hellerstedt | 44 | Wife | — | Tennessee |
| 15 | Joan F. Hellerstedt | 11 | Daughter | — | Pennsylvania |
| 16 | Edward B. Clarke | 43 | Head | Auditor | Pennsylvania |
| 17 | Anne H. Clarke | 43 | Wife | — | Pennsylvania |
| 18 | Charles E. Clarke | 18 | Son | — | Pennsylvania |
| 19 | Robert H. Clarke | 16 | Son | — | Pennsylvania |
| 20 | June A. Clarke | 12 | Daughter | — | Pennsylvania |
| 21 | Catherine O'Toole | 29 | Maid | Maid | Pennsylvania |
| 22 | David L. Crawford | 56 | Head | Salesman | Pennsylvania |
| 23 | Mary F. Bingel | 25 | Maid | Maid | Pennsylvania |
| 24 | James F. Fitzgerald | 65 | Head | Supervisor | West Virginia |
| 25 | Isabel C. Fitzgerald | 54 | Wife | — | West Virginia |
| 26 | Martha M. Fitzgerald | 24 | Daughter | New Worker | West Virginia |
| 27 | Mary E. Fitzgerald | 18 | Daughter | — | West Virginia |
| 28 | Sara F. Fitzgerald | 12 | Daughter | — | West Virginia |
| 29 | (At) Henry E. Fitzgerald | 26 | Son | Engineer | West Virginia |
| 30 | Leroy H. Chesson | 66 | Head | Physician | Pennsylvania |
| 31 | Rose M. Chesson | 54 | Wife | — | Pennsylvania |
| 32 | Isabel Leydig | 21 | Daughter | — | Pennsylvania |
| 33 | Maurice Sieger | 40 | Head | Chief Engr | Pennsylvania |
| 34 | Rose Anna Sieger | 39 | Wife | — | Pennsylvania |
| 35 | Earl Sieger | 14 | Son | — | Pennsylvania |
| 36 | Rose Marie Sieger | 10 | Daughter | — | Pennsylvania |
| 37 | John M. Jr. Mckibbin | 38 | Head | Adv. Mgr | Pennsylvania |
| 38 | Eleanor M. Mckibbin | 35 | Wife | — | Ohio |
| 39 | John M. Iii Mckibbin | 8 | Son | — | Pennsylvania |
| 40 | Louise Davis | 30 | Maid | Maid | Georgia |
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)