JT
John Todd — 1940 US Census Record
Model Tree available1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this John Todd across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents John & Marguerite — first a head (b.~1915), then head of a 3-person household.
Age 25
b. ~1915
Male
Head
Born: Pennsylvania
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Todd |
| Given Name | John W. Jr. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Pittsburgh |
| Est. Birth Year | ~1915 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Nancy Todd | Daughter | — | 1 | ~1939 |
| John Todd | Head | — | 25 | ~1915 |
| Pauline Todd | Spouse | — | 25 | ~1915 |
Census Appearances
1920
Allegheny, Pennsylvania
Son, age 5
Allegheny, Pennsylvania · implied b. ~1915 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Todd |
| Given Name | John W. Jr. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Iowa |
| Occupation | none |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Son, age 15
Allegheny, Pennsylvania · implied b. ~1915 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Todd |
| Given Name | John W. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Head, age 25
Allegheny-County, Pennsylvania · implied b. ~1915 — 3 household members
| Surname | Todd |
| Given Name | John W. Jr. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Highest Grade | Hs 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 Todd across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Todd (~0.92 confidence) and mother Marguerite Todd (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Todd
b. ~1884
Source father
● Household
· direct · ~0.92
Mother
Marguerite Todd
b. ~1891
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Todd
Head · 1940 · age 25 · b. ~1915 · 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-t0627-03662-00411)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Net H. Miles | 48 | Head | Dress Shop | Maryland |
| 2 | Grace Miles | 40 | Wife | Dress Shop | Ohio |
| 3 | Edwin J. Miles | 14 | Son | — | Pennsylvania |
| 4 | John W. Jr. Todd THIS PERSON | 25 | Head | — | Pennsylvania |
| 5 | Pauline W. Todd | 25 | Wife | Sales Engineer | Illinois |
| 6 | Nancy Todd | 1 | Daughter | — | Pennsylvania |
| 7 | Sidney Adler | 39 | Head | Salesman | Ohio |
| 8 | Hettie Adler | 37 | Wife | — | Kentucky |
| 9 | Patricia L. Adler | 13 | Daughter | — | Ohio |
| 10 | James L. Adler | 8 | Son | — | Ohio |
| 11 | Eugenia Adler | 0 | Son | — | Pennsylvania |
| 12 | Sadie Ruff | 55 | Maid | — | Florida |
| 13 | Abe Liffard | 69 | Head | Jewelry | Russia |
| 14 | Jessie Liffard | 55 | Wife | — | Russia |
| 15 | Mina L. Snyder | 52 | House-keeper | House-Keeper | Pennsylvania |
| 16 | Sylvia Updegrove | 45 | Nurse | Practical Nurse | West Virginia |
| 17 | Blau-Sidney Meinel | 46 | Head | — | Pennsylvania |
| 18 | Bess Meinel | 40 | Wife | — | Pennsylvania |
| 19 | Sarah H. Meinel | 14 | Daughter | — | Pennsylvania |
| 20 | Jean Meinel | 7 | Daughter | — | Pennsylvania |
| 21 | Sophie Vilcheck | 17 | Maid | Maid | Pennsylvania |
| 22 | Jack C. Lofton | 42 | Head | Clerical | Pennsylvania |
| 23 | Irene L. Lofton | 38 | Wife | — | Russia |
| 24 | Rita Lofton | 3 | Daughter | — | Pennsylvania |
| 25 | Rebecca Lazier | 60 | Mother | — | Russia |
| 26 | Freda Lazier | 25 | Sister | Concert Work | Pennsylvania |
| 27 | Eric Nordstrom | 37 | Head | Engineer | Massachusetts |
| 28 | Ethel T. Nordstrom | 34 | Wife | — | Pennsylvania |
| 29 | Richard Nordstrom | 13 | Son | — | Massachusetts |
| 30 | Robert A. Mousley | 57 | Head | Investment Counsellor | Illinois |
| 31 | Evelyn W. Mousley | 53 | Wife | — | Pennsylvania |
| 32 | Helen H. Daniel | 51 | Sister | Teacher | Pennsylvania |
| 33 | Ralph L. Thomas | 34 | Head | Bank Cashier | Pennsylvania |
| 34 | Elizabeth Thomas | 45 | Wife | — | Pennsylvania |
| 35 | Anna Holka | 29 | Maid | Maid | Pennsylvania |
| 36 | Rachel S. Spear | 56 | Head | — | Pennsylvania |
| 37 | Robert L. Spear | 30 | Son | Executive | Pennsylvania |
| 38 | Harriett Bush | 45 | Maid | Maid | Virginia |
| 39 | Charles S. Prichard | 56 | Head | Lawyer | Nebraska |
| 40 | Mary B. Prichard | 51 | Wife | — | Ohio |
Pedigree Summary
John
Gen 1 · 2 parents
~0.92
Max depth 4 (1900–1950 window)
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)