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Margaret Mclean — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Bayfield-County, Wisconsin
Our Model Tree links this Margaret Mclean across the 1930 and 1940 US Censuses in Bayfield-County, Wisconsin (XGBoost, ~Confirmed) — first a spouse (b.~1909), then head of a 6-person household.
Age 31
b. ~1909
Female
Spouse
Born: Wisconsin
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Bayfield-County, Wisconsin |
| Surname | McLean |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Wisconsin |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Bayfield |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Wisconsin |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
| Township / Ward | Iron River |
| Est. Birth Year | ~1909 |
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 Margaret | Age | Birth yr |
|---|---|---|---|---|
| Ronald Mclean | Son | — | 2 | ~1938 |
| John Mclean | Son | — | 4 | ~1936 |
| Harry Mclean | Son | — | 4 | ~1936 |
| Margaret Mclean | Spouse | — | 31 | ~1909 |
| John Mclean | Head | — | 31 | ~1909 |
| Beth Mclean | Daughter | — | 2 | ~1938 |
Census Appearances
1930
Bayfield, Wisconsin
Spouse, age 21
Bayfield, Wisconsin · implied b. ~1909 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McLean |
| Given Name | Margaret R. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Married |
| Birthplace | Wisconsin |
| Age at First Marriage | 21 |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | Wisconsin |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1940
Bayfield-County, Wisconsin
Spouse, age 31
Bayfield-County, Wisconsin · implied b. ~1909 — 6 household members
| Surname | McLean |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Wisconsin |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Bayfield |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Wisconsin |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
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 Margaret Mclean across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Margaret Mclean
Spouse · 1940 · age 31 · b. ~1909 · Wisconsin
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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 — Bayfield-County, Wisconsin
Open full size
1940 US Federal Census — Bayfield-County, Wisconsin
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-04458-00224)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Caroline B Olas | 67 | Head | — | Wisconsin |
| 42 | Harry Willoughby | 32 | Son | Truck Driving | Wisconsin |
| 43 | Myrtle Willoughby | 33 | Daughter | — | Wisconsin |
| 44 | Charles W Jones | 77 | Head | — | New York |
| 45 | Josephine Jones | 75 | Wife | — | Pennsylvania |
| 46 | Chris Olsen | 68 | Head | — | Norway |
| 47 | Olava Olsen | 70 | Wife | — | Norway |
| 48 | John Carlson | 23 | Lodger | — | Sweden |
| 49 | Charles S Willoughby | 53 | Head | Electrician | Ohio |
| 50 | Marion Willoughby | 53 | Wife | — | Wisconsin |
| 51 | Frances Willoughby | 25 | Daughter | Waitress | Wisconsin |
| 52 | Charles J Willoughby | 24 | Son | Truck Driver | Wisconsin |
| 53 | Wallace Willoughby | 22 | Son | Potato Inspector | Wisconsin |
| 54 | Robert Willoughby | 20 | Son | Lineman | Wisconsin |
| 55 | Russell Willoughby | 18 | Son | Assistant At School | Wisconsin |
| 56 | Lucille Willoughby | 16 | Daughter | — | Wisconsin |
| 57 | Wesley Willoughby | 13 | Son | — | Wisconsin |
| 58 | Gene Willoughby | 10 | Son | — | Wisconsin |
| 59 | Francis S Elliott | 54 | Head | — | New York |
| 60 | Clifford Elliott | 55 | Son | Section Laborer | Michigan |
| 61 | Ethel Elliott | 43 | Daughter | Teacher | Michigan |
| 62 | Olen O Ness | 37 | Head | Proprietor | Wisconsin |
| 63 | Irene Ness | 26 | Wife | — | Wisconsin |
| 64 | Percy Armbruster | 44 | Head | Foreman | Wisconsin |
| 65 | Bertha Armbruster | 35 | Wife | — | Wisconsin |
| 66 | Gertrude Armbruster | 15 | Daughter | — | Wisconsin |
| 67 | Lillian Armbruster | 14 | Daughter | — | Wisconsin |
| 68 | James Armbruster | 12 | Son | — | Wisconsin |
| 69 | Grace Armbruster | 10 | Daughter | — | Wisconsin |
| 70 | C. Wesley Clyde | 57 | Head | Laborer | Wisconsin |
| 71 | Nellie Clyde | 56 | Wife | — | Michigan |
| 72 | William Clyde | 77 | Brother | — | Wisconsin |
| 73 | John Mclean | 31 | Head | Cream Tester | Wisconsin |
| 74 | Margaret Mclean THIS PERSON | 31 | Wife | — | Wisconsin |
| 75 | John Jr Mclean | 4 | Son | — | Wisconsin |
| 76 | Beth Mclean | 2 | Daughter | — | Wisconsin |
| 77 | Harry Mclean | 4 | Son | — | Wisconsin |
| 78 | Ronald Mclean | 2 | Son | — | Wisconsin |
| 79 | Luke G Levin | 74 | Head | — | Wisconsin |
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)