MI
Mary Irwin — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Marquette-County, Michigan
Our Model Tree links this Mary Irwin across the 1930 and 1940 US Censuses in Marquette-County, Michigan (XGBoost, ~Confirmed) — first a spouse (b.~1888), then head of a 10-person household.
Age 52
b. ~1888
Female
Spouse
Born: England
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Marquette-County, Michigan |
| Surname | Irwin |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | England |
| 1935 Residence (City) | Ishpeming city |
| 1935 Residence (County) | Marquette |
| Naturalization Status | Naturalized |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | England |
| Birthplace (normalized) | england |
| Township / Ward | Ishpeming City |
| Est. Birth Year | ~1888 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Bradley Hopper | Other | — | 30 | ~1910 |
| Marjorie Irwin | Daughter | — | 15 | ~1925 |
| Octave Townsend | Other | — | 42 | ~1898 |
| Sue Irwin | Daughter | — | 19 | ~1921 |
| Gustav Aheka | Other | — | 57 | ~1883 |
| Leroy Hosking | Other | — | 32 | ~1908 |
| Fay Irwin | Daughter | — | 10 | ~1930 |
| William Irwin | Head | — | 52 | ~1888 |
| Mary Irwin | Spouse | — | 52 | ~1888 |
| William Thomas | Other | — | 70 | ~1870 |
Census Appearances
1930
Marquette, Michigan
Spouse, age 42
Marquette, Michigan · implied b. ~1888 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Irwin |
| Given Name | Mary A. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | England |
| Naturalization Status | Naturalized |
| Year of Immigration | 1892 |
| Age at First Marriage | 30 |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | England |
| Birthplace (normalized) | england |
1940
Marquette-County, Michigan
Spouse, age 52
Marquette-County, Michigan · implied b. ~1888 — 10 household members
| Surname | Irwin |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | England |
| 1935 Residence (City) | Ishpeming city |
| 1935 Residence (County) | Marquette |
| Naturalization Status | Naturalized |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | England |
| Birthplace (normalized) | england |
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 Mary Irwin across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Irwin
Spouse · 1940 · age 52 · b. ~1888 · Michigan
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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 — Marquette-County, Michigan
Open full size
1940 US Federal Census — Marquette-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01786-00195)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ernest Maki | 47 | Head | Miner | Michigan |
| 2 | Gertrude Maki | 37 | Wife | — | Michigan |
| 3 | George Maki | 11 | Son | — | Michigan |
| 4 | Anna Jacobs | 27 | Sister in law | Sew Worker | Michigan |
| 5 | Julius Tupala | 50 | Head | Mach Operator | Finland |
| 6 | Hilma Tupala | 47 | Wife | — | Michigan |
| 7 | Viola Tupala | 24 | Daughter | Stenographer | Michigan |
| 8 | Rudolph Tupala | 22 | Son | Office Clerk | Michigan |
| 9 | Carl Tupala | 19 | Son | — | Michigan |
| 10 | Gertrude Tupala | 18 | Daughter | — | Michigan |
| 11 | Roy Tupala | 15 | Son | — | Michigan |
| 12 | Janet Tupala | 12 | Daughter | — | Michigan |
| 13 | Tekla Devine | 52 | Head | — | Michigan |
| 14 | John Devine | 21 | Son | Job Work | Michigan |
| 15 | Olive Young | 29 | Roomer | Mach Operator | Michigan |
| 16 | Marvin Page | 22 | Roomer | Waitress | Michigan |
| 17 | Nell Hickey | 62 | Head | Sew Instructor | Michigan |
| 18 | Nell Connors | 50 | Sister | — | Michigan |
| 19 | Gertrude Crabb | 42 | Half sister | Gen Office Work | Michigan |
| 20 | Anthony Sanzoline | 48 | Head | Miner | Italy |
| 21 | Dolores Sanzoline | 39 | Wife | — | Illinois |
| 22 | Mary Sanzoline | 17 | Daughter | — | Italy |
| 23 | Michael Sanzoline | 14 | Son | — | Michigan |
| 24 | Leonard Sanzoline | 13 | Son | — | Michigan |
| 25 | Rocco Sanzoline | 11 | Son | — | Michigan |
| 26 | William Irwin | 52 | Head | Truck Driver | Michigan |
| 27 | Mary Irwin THIS PERSON | 52 | Wife | — | England |
| 28 | Sue Irwin | 19 | Daughter | — | Michigan |
| 29 | Marjorie Irwin | 15 | Daughter | — | Michigan |
| 30 | Fay Irwin | 10 | Daughter | — | Michigan |
| 31 | Octave Townsend | 42 | Lodger | Teacher | Michigan |
| 32 | Gustav Aheka | 57 | Lodger | Draftsman | Austria |
| 33 | William Thomas | 70 | Lodger | — | New Jersey |
| 34 | Leroy Hosking | 32 | Lodger | Draftsman | Michigan |
| 35 | Bradley Hopper | 30 | Lodger | Painter | Michigan |
| 36 | Ralph W. Johnson | 36 | Head | Chef | Minnesota |
| 37 | Edna P. Johnson | 35 | Wife | — | Minnesota |
| 38 | Joanne Johnson | 9 | Daughter | — | Minnesota |
| 39 | David Johnson | 1 | Son | — | Minnesota |
| 40 | Richard T. Gribble | 66 | Head | Captain Police | England |
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)