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Margaret Mclean — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Alameda-County, California
Our Model Tree links this Margaret Mclean across the 1930 and 1940 US Censuses in Alameda-County, California (XGBoost, ~Confirmed) — first a spouse (b.~1908), then head of a 6-person household.
Age 32
b. ~1908
Female
Spouse
Born: California
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Alameda-County, California |
| Surname | McLean |
| Given Name | Margaret W |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | California |
| 1935 Residence (City) | San Leandro City |
| 1935 Residence (County) | Alameda |
| Additional Details | |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Township / Ward | San Leandro City |
| Est. Birth Year | ~1908 |
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 |
|---|---|---|---|---|
| Phyllis Mclean | Daughter | — | 15 | ~1925 |
| Robert Mclean | Son | — | 8 | ~1932 |
| Edward Mclean | Son | — | ~1940 | |
| Margaret Mclean | Spouse | — | 32 | ~1908 |
| Walter Mclean | Son | — | 16 | ~1924 |
| Walter Mclean | Head | — | 36 | ~1904 |
Census Appearances
1930
Alameda, California
Other, age 20
Alameda, California · implied b. ~1910 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McLean |
| Given Name | Mary |
| Relationship to Head | Daughter-in-law |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Married |
| Birthplace | California |
| Age at First Marriage | 22 |
| Father's Birthplace | California |
| Mother's Birthplace | California |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
Alameda-County, California
Spouse, age 32
Alameda-County, California · implied b. ~1908 — 6 household members
| Surname | McLean |
| Given Name | Margaret W |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | California |
| 1935 Residence (City) | San Leandro City |
| 1935 Residence (County) | Alameda |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
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.
Show:
This person
Anchor record
Margaret Mclean
Spouse · 1940 · age 32 · b. ~1908 · California
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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 — Alameda-County, California
Open full size
1940 US Federal Census — Alameda-County, California
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00184-00249)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ward O Howarth | 42 | Head | Electrician | Utah |
| 2 | Rose M Howarth | 41 | Wife | Saleslady | California |
| 3 | Sylvan G Bona | 36 | Head | Manager | California |
| 4 | Irene Bona | 29 | Wife | — | Wisconsin |
| 5 | Bruce Bona | 4 | Son | — | California |
| 6 | Daughter Bona | 0 | Daughter | — | California |
| 7 | William T Leaman | 60 | Head | Stock Keeper | Ohio |
| 8 | Helen Leaman | 60 | Wife | Secretary | California |
| 9 | Ray Sweezy | 60 | Head | Inspector Of Naval Materials | Kansas |
| 10 | Edna Sweezy | 45 | Wife | — | Norway |
| 11 | Richard C Sweezy | 17 | Son | — | California |
| 12 | Melinda Sweezy | 16 | Daughter | — | California |
| 13 | George V Johnson | 39 | Head | Utility Man | California |
| 14 | Ethel A Johnson | 40 | Wife | — | Michigan |
| 15 | Audrey M Johnson | 17 | Daughter | Machine Oper | California |
| 16 | Milton R Johnson | 17 | Son | — | California |
| 17 | Gordon E Johnson | 14 | Son | — | California |
| 18 | James W Gamerill | 35 | Head | Plumber | California |
| 19 | Gladys R Gamerill | 31 | Wife | — | Oregon |
| 20 | Belmer O'Neil Gamerill | 13 | Step Son | — | Oregon |
| 21 | Foster Lowell Gamerill | 30 | Brother | Plumber'S Helper | Oregon |
| 22 | Redmond D Mckeon | 53 | Head | Service Clerk | California |
| 23 | Elizabeth Mckeon | 44 | Wife | Query Clerk | California |
| 24 | Mary Belle Mckeon | 12 | Daughter | — | California |
| 25 | James A Gable | 62 | Head | Odd Jobs Carpenter | Iowa |
| 26 | Ella M Gable | 62 | Wife | — | Maryland |
| 27 | Walter R Mclean | 36 | Head | Civil Engineer | California |
| 28 | Margaret W Mclean THIS PERSON | 32 | Wife | — | California |
| 29 | Walter D Mclean | 16 | Son | Delivery Boy | California |
| 30 | Phyllis S Mclean | 15 | Daughter | — | California |
| 31 | Robert J Mclean | 8 | Son | — | California |
| 32 | Edward V Mclean | 0 | Son | — | California |
| 33 | Marshall M Miller | 28 | Head | Teacher | California |
| 34 | Bernice E Miller | 30 | Wife | — | California |
| 35 | Carla L Miller | 2 | Daughter | — | California |
| 36 | Albert C Moyer | 51 | Head | Postal Clerk (P.O.) | California |
| 37 | Cora G Moyer | 51 | Wife | — | Pennsylvania |
| 38 | Yale Moyer | 22 | Son | — | California |
| 39 | Otto L Pfaendtner | 80 | Head | — | Germany |
| 40 | Ida Pfaendtner | 78 | Wife | — | Germany |
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)