MS
Martin Smith — 1940 US Census Record
Model Tree available1940 United States Federal Census · Philadelphia-County, Pennsylvania
Our Model Tree links this Martin Smith across the 1920, 1930 and 1940 US Censuses in Philadelphia-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Martin & Margaret — first a head (b.~1910), then head of a 6-person household.
Age 30
b. ~1910
Male
Head
Born: Penna
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Philadelphia-County, Pennsylvania |
| Surname | Smith |
| Given Name | Martin |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Penna |
| 1935 Residence (City) | Philadelphia City |
| 1935 Residence (County) | Philadelphia |
| Additional Details | |
| Occupation | Chauffeur |
| Industry | Coal Company |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1768 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | penna |
| Occupation | Chauffeur |
| Township / Ward | Philadelphia City |
| Est. Birth Year | ~1910 |
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 Martin | Age | Birth yr |
|---|---|---|---|---|
| Robert Smith | Son | — | 3 | ~1937 |
| Martin Smith | Son | — | 10 | ~1930 |
| Glenda Smith | Daughter | — | 8 | ~1932 |
| Lillian Smith | Spouse | — | 26 | ~1914 |
| Robert Smith | Son | — | 3 | ~1937 |
| Martin Smith | Head | — | 30 | ~1910 |
Census Appearances
1920
Philadelphia, Pennsylvania
Son, age 10
Philadelphia, Pennsylvania · implied b. ~1910 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Martin J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Penna |
| Father's Birthplace | Penna |
| Mother's Birthplace | Ireland |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | penna |
1930
Philadelphia, Pennsylvania
Son, age 19
Philadelphia, Pennsylvania · implied b. ~1911 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Martin |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Penna |
| Father's Birthplace | Penna |
| Mother's Birthplace | Ireland |
| Occupation | Wrapper |
| Industry | Laundry |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | penna |
1940
Philadelphia-County, Pennsylvania
Head, age 30
Philadelphia-County, Pennsylvania · implied b. ~1910 — 6 household members
| Surname | Smith |
| Given Name | Martin |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Penna |
| 1935 Residence (City) | Philadelphia City |
| 1935 Residence (County) | Philadelphia |
| Occupation | Chauffeur |
| Industry | Coal Company |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1768 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | penna |
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 Martin Smith across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Martin Smith (~0.92 confidence) and mother Margaret Smith (~0.92 confidence) and mother Anna Smith (~0.92 confidence) and father James Smith (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Martin Smith
b. ~1866
Source father
● Household
· direct · ~0.92
Mother
Margaret Smith
b. ~1869
Source mother
● Household
· direct · ~0.92
Mother
Anna Smith
b. ~1886
Source mother
● Household
· direct · ~0.92
Father
James Smith
b. ~1886
Source father
● Household
· direct · ~0.92
This person
Anchor record
Martin Smith
Head · 1940 · age 30 · b. ~1910 · 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 — 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-t0627-03730-00445)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Stella Gorski | 16 | Daughter | — | Penna |
| 2 | Helen Gorski | 14 | Daughter | — | Penna |
| 3 | Joseph Gorski | 13 | Son | — | Penna |
| 4 | Hanna O'Brien | 65 | Head | — | Ireland |
| 5 | Mary O'Brien | 35 | Daughter | — | Penna |
| 6 | James O'Brien | 25 | Son | Letter Carrier | Penna |
| 7 | Catherine Duffy | 39 | Daughter | Examiner | Northern Ireland |
| 8 | Theresa Duffy | 13 | Daughter | — | Penna |
| 9 | James Perri | 53 | Head | Tailor | Italy |
| 10 | Rose Perri | 45 | Wife | — | Italy |
| 11 | Santina Perri | 24 | Daughter | Operator | Penna |
| 12 | Vincent Caruso | 26 | Son-in-law | Pressman | Italy |
| 13 | Angelina Caruso | 25 | Daughter | — | Penna |
| 14 | Robert Caruso | 2 | Son | — | Penna |
| 15 | Leon Desmond | 40 | Head | Labor | Italy |
| 16 | Millie Desmond | 34 | Wife | — | Penna |
| 17 | Theresa Desmond | 15 | Daughter | — | Penna |
| 18 | Nicholas Desmond | 12 | Son | — | Penna |
| 19 | Pascal Desmond | 10 | Son | — | Penna |
| 20 | Doris Desmond | 3 | Daughter | — | Penna |
| 21 | Leon Desmond | 1 | Son | — | Penna |
| 22 | Charles Dougherty | 24 | Head | Labor | Penna |
| 23 | Helen Dougherty | 21 | Wife | — | Penna |
| 24 | Charles Dougherty | 1 | Son | — | Penna |
| 25 | Martin Smith THIS PERSON | 30 | Head | Chauffeur | Penna |
| 26 | Lillian Smith | 26 | Wife | — | Penna |
| 27 | Martin Smith | 10 | Son | — | Penna |
| 28 | Glenda Smith | 8 | Daughter | — | Penna |
| 29 | Robert Smith | 3 | Son | — | Penna |
| 30 | Robert Smith | 3 | Son | — | Penna |
| 31 | Edward Quigley | 47 | Head | Operator | Penna |
| 32 | Gertrude Quigley | 52 | Wife | — | Penna |
| 33 | Samuel Callens | 33 | Head | Salesman | Penna |
| 34 | Sara Callens | 36 | Wife | Operator | Penna |
| 35 | Joseph Minner | 42 | Head | Chaser | Penna |
| 36 | Mary Minner | 42 | Wife | — | Penna |
| 37 | Frances Minner | 18 | Daughter | — | Penna |
| 38 | Emil Minner | 10 | Son | — | Penna |
| 39 | Alfred Jackson | 50 | Head | Elevator Operator | Penna |
| 40 | Viola Jackson | 40 | Wife | — | Penna |
Pedigree Summary
Martin
Gen 1 · 4 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)