MS
Michael Smith — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Michael Smith across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1885), then head of a 4-person household.
Age 55
b. ~1885
Male
Head
Born: Ireland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Smith |
| Given Name | Michael J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Engineer |
| Industry | Railroad |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 2500 |
| Highest Grade | C 4 |
| 1935 Residence | Same place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Occupation | Engineer |
| Township / Ward | Pittsburgh |
| Est. Birth Year | ~1885 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Michael | Age | Birth yr |
|---|---|---|---|---|
| Michael Smith | Head | — | 55 | ~1885 |
| Mary Smith | Daughter | — | 30 | ~1910 |
| Margaret Smith | Spouse | — | 38 | ~1902 |
| Jack Smith | Son | — | 18 | ~1922 |
Census Appearances
1920
Allegheny, Pennsylvania
Head, age 35
Allegheny, Pennsylvania · implied b. ~1885 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Michael |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Ireland |
| Year of Immigration | 1897 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Estimator |
| Industry | Steel Co. |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Irish |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth Country | Ireland |
| Year of Naturalization | 1898 |
| Birthplace (normalized) | ireland |
1930
Allegheny, Pennsylvania
Head, age 45
Allegheny, Pennsylvania · implied b. ~1885 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Michael J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1888 |
| Age at First Marriage | 25 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Contracting Engineer |
| Industry | M. Co. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Value / Rent | 14,000 |
| Radio Set | R |
| Veteran | No |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
Allegheny-County, Pennsylvania
Head, age 55
Allegheny-County, Pennsylvania · implied b. ~1885 — 4 household members
| Surname | Smith |
| Given Name | Michael J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Naturalization Status | Naturalized |
| Occupation | Engineer |
| Industry | Railroad |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 2500 |
| Highest Grade | C 4 |
| 1935 Residence | Same place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
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 Michael Smith across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Michael Smith
Head · 1940 · age 55 · b. ~1885 · Pennsylvania
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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
39 people indexed on this census page (nara:1940:m-t0627-03669-00434)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Frank L. Ambrose | 43 | Head | Salesman | Pennsylvania |
| 42 | Helen C. Ambrose | 40 | Wife | — | Pennsylvania |
| 43 | James W. Ambrose | 11 | Son | — | Pennsylvania |
| 44 | Robert L. Ambrose | 6 | Son | — | Pennsylvania |
| 45 | Cleve D. Webb | 56 | Head | Stereotyper | Missouri |
| 46 | Ada Webb | 56 | Wife | — | Michigan |
| 47 | Granville Webb | 24 | Son | Stenographer | Texas |
| 48 | Willa Paul | 38 | Head | Domestic | Pennsylvania |
| 49 | Anna Cummings | 48 | Head | School Teacher | Pennsylvania |
| 50 | Diane Cummings | 17 | Daughter | — | Pennsylvania |
| 51 | Robert Cummings | 13 | Son | — | Pennsylvania |
| 52 | Leonard D. Davis | 50 | Head | Postal Clerk | Ohio |
| 53 | Mabel Davis | 50 | Wife | — | New Jersey |
| 54 | Paul Fischer | 45 | Head | Cooper | Pennsylvania |
| 55 | Edith Fischer | 35 | Wife | — | Pennsylvania |
| 56 | Michael J. Smith THIS PERSON | 55 | Head | Engineer | Ireland |
| 57 | Margaret Smith | 38 | Wife | — | Pennsylvania |
| 58 | Mary Jane Smith | 30 | Daughter | — | Pennsylvania |
| 59 | Jack Smith | 18 | Son | — | Pennsylvania |
| 60 | Frank Phillips Best | 51 | Head | Civil Engineer | Ohio |
| 61 | Emma Harris Best | 48 | Wife | — | W. Virginia |
| 62 | Phillips H. Best | 24 | Son | Student Engineering | Pennsylvania |
| 63 | Isabel Fenn | 70 | Head | — | Pennsylvania |
| 64 | Marie C. Fenn | 42 | Daughter | Stenographer | Pennsylvania |
| 65 | Sara E. Fenn | 36 | Daughter | — | Pennsylvania |
| 66 | Joseph Fisher | 33 | Head | Printer | Pennsylvania |
| 67 | Hilla Fisher | 28 | Wife | Stenography | Pennsylvania |
| 68 | Sherman Everett | 42 | Head | Draft Clerk | Pennsylvania |
| 69 | Margaret Everett | 40 | Wife | — | Pennsylvania |
| 70 | John Everett | 19 | Son | — | Pennsylvania |
| 71 | Sherman Everett | 13 | Son | — | Pennsylvania |
| 72 | Frank Fitch | 38 | Head | Clerk | Pennsylvania |
| 73 | Nellie Fitch | 38 | Wife | — | Pennsylvania |
| 74 | Donald Fitch | 13 | Son | — | Pennsylvania |
| 75 | Joan Fitch | 3 | Daughter | — | Pennsylvania |
| 76 | David Gary | 31 | Head | Painter | Pennsylvania |
| 77 | Sarah Gary | 27 | Wife | — | Pennsylvania |
| 78 | Joel Gary | 3 | Son | — | Pennsylvania |
| 79 | Anna Yokel | 78 | Head | — | Tennessee |
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)