MC
Margaret Collins — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Marin-County, California
Our Model Tree links this Margaret Collins across the 1930 and 1940 US Censuses in Marin-County, California (XGBoost, ~Confirmed) — first a daughter (b.~1920), then head of a 8-person household.
Age 20
b. ~1920
Female
Daughter
Born: Canada English
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Marin-County, California |
| Surname | Collins |
| Given Name | Margaret E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Canada English |
| 1935 Residence (City) | Mill Valley Town |
| 1935 Residence (County) | Marin |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Waitress |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 780 |
| Highest Grade | H-4 |
| 1935 Residence | Same Place |
| Birth Country | Canada |
| Birthplace (normalized) | canada english |
| Occupation | Waitress |
| Township / Ward | Mill Valley Town |
| Est. Birth Year | ~1920 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Margaret | Age | Birth yr |
|---|---|---|---|---|
| Lorraine Collins | Daughter | — | 10 | ~1930 |
| Kathleen Collins | Daughter | — | 18 | ~1922 |
| Margaret Collins | Daughter | — | 20 | ~1920 |
| Grace Collins | Daughter | — | 13 | ~1927 |
| Parnell Collins | Daughter | — | 14 | ~1926 |
| John Collins | Head | — | 47 | ~1893 |
| Michael Collins | Son | — | 17 | ~1923 |
| Margaret Collins | Spouse | — | 46 | ~1894 |
Census Appearances
1930
Marin, California
Daughter, age 10
Marin, California · implied b. ~1920 — 12 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Collins |
| Given Name | Marguerite E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Canada English |
| Naturalization Status | Alien |
| Year of Immigration | 1913 |
| Father's Birthplace | Canada English |
| Mother's Birthplace | Canada English |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | Canada |
| Birthplace (normalized) | canada english |
1940
Marin-County, California
Daughter, age 20
Marin-County, California · implied b. ~1920 — 8 household members
| Surname | Collins |
| Given Name | Margaret E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Canada English |
| 1935 Residence (City) | Mill Valley Town |
| 1935 Residence (County) | Marin |
| Naturalization Status | Naturalized |
| Occupation | Waitress |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 780 |
| Highest Grade | H-4 |
| 1935 Residence | Same Place |
| Birth Country | Canada |
| Birthplace (normalized) | canada english |
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 Collins across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Margaret Collins
Daughter · 1940 · age 20 · b. ~1920 · California
★ You are viewing this record
Sibling
Michael Collins
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Parnell Collins
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kathleen Collins
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Grace Collins
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lorraine Collins
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Marin-County, California
Open full size
1940 US Federal Census — Marin-County, California
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00262-00389)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John J Collins | 47 | Head | Salesman | Canada English |
| 2 | Margaret F Collins | 46 | Wife | — | Newfoundland |
| 3 | Margaret E Collins THIS PERSON | 20 | Daughter | Waitress | Canada English |
| 4 | Kathleen M Collins | 18 | Daughter | Housekeeper | Canada English |
| 5 | Michael W Collins | 17 | Son | — | Canada English |
| 6 | Parnell P Collins | 14 | Daughter | — | California |
| 7 | Grace E Collins | 13 | Daughter | — | California |
| 8 | Lorraine M Collins | 10 | Daughter | — | California |
| 9 | Lee Fong | 50 | Head | — | China |
| 10 | Charley Jr Fong | 5 | Son | — | California |
| 11 | Jenny Fong | 3 | Daughter | — | California |
| 12 | Jose Fong | 2 | Daughter | — | California |
| 13 | Hal Hobson | 55 | Head | Conductor | Oregon |
| 14 | Mary E Hobson | 49 | Wife | — | California |
| 15 | Mildred M Hobson | 25 | Daughter | File Clerk | California |
| 16 | Clarence B Hobson | 11 | Son | — | California |
| 17 | Glenn T Cook | 35 | Head | Salesman | Kansas |
| 18 | Geneva M Cook | 32 | Wife | Cook | Kansas |
| 19 | Dolores E Cook | 6 | Daughter | — | — |
| 20 | Thomas W Cook | 5 | Son | — | — |
| 21 | Elizabeth Churchman | 32 | Lodger | — | Kansas |
| 22 | Patricia J Churchman | 5 | Lodger's Daughter | — | — |
| 23 | — | None | — | — | — |
| 24 | Thomas J Callahan | 58 | Head | Letter Carrier | Illinois |
| 25 | Mary A Callahan | 58 | Wife | — | Pennsylvania |
| 26 | Blanche M Callahan | 31 | Daughter | Stenographer | Wisconsin |
| 27 | Eileen M Robberson | 25 | Daughter | Housekeeper | Illinois |
| 28 | Elbert L Robberson | 25 | Head | Radio Officer | Canada English |
| 29 | Virginia G Robberson | 23 | Wife | — | Rhode Island |
| 30 | Lynn W Robberson | 4 | Daughter | — | California |
| 31 | Gary B Robberson | 3 | Son | — | California |
| 32 | Elbert P Robberson | 1 | Son | — | California |
| 33 | Carl Ponsar | 65 | Head | Proprietor | Sweden |
| 34 | Adele G Ponsar | 46 | Wife | — | Washington |
| 35 | Joseph Ferrario | 49 | Head | — | Italy |
| 36 | James H Evans | 39 | Head | Auto Mechanic | California |
| 37 | Marcella L Evans | 40 | Wife | — | Idaho |
| 38 | Lola J Evans | 10 | Daughter | — | California |
| 39 | Stanley F Bass | 56 | Head | House Garden Work | England |
| 40 | Edith L Bass | 55 | Wife | — | 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)