MR
Margaret Robertson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Margaret Robertson across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Florence & Margaret — first a daughter (b.~1901), then head of a 4-person household.
Age 39
b. ~1901
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Robertson |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 39 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Operator of Beauty Shop |
| Industry | Retail |
| Class of Worker | OA |
| Hours Worked | 40 |
| Income (1939) | 936 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Operator Of Beauty Shop |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1901 |
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 Margaret | Age | Birth yr |
|---|---|---|---|---|
| Robert Robertson | Son | — | 44 | ~1896 |
| Margaret Robertson | Head | — | 74 | ~1866 |
| Margaret Robertson | Daughter | — | 39 | ~1901 |
| Florence Robertson | Spouse | — | 52 | ~1888 |
Census Appearances
1920
Cook, Illinois
Other, age 19
Cook, Illinois · implied b. ~1901 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Roberts |
| Given Name | Margaret |
| Relationship to Head | Mother in law |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Other, age 28
Cook, Illinois · implied b. ~1902 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Roberts |
| Given Name | Margaret |
| Relationship to Head | Maid |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Maid |
| Industry | Private Home |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Daughter, age 39
Cook-County, Illinois · implied b. ~1901 — 4 household members
| Surname | Robertson |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 39 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Occupation | Operator of Beauty Shop |
| Industry | Retail |
| Class of Worker | OA |
| Hours Worked | 40 |
| Income (1939) | 936 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Robertson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Florence Robertson (~0.92 confidence) and mother Margaret Robertson (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Florence Robertson
b. ~1888
Source mother
● Household
· direct · ~0.92
Mother
Margaret Robertson
b. ~1866
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Margaret Robertson
Daughter · 1940 · age 39 · b. ~1901 · Illinois
★ You are viewing this record
Sibling
Robert Robertson
Sibling · 1940 · age 44
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 — Cook-County, Illinois
Open full size
1940 US Federal Census — Cook-County, Illinois
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-00975-00505)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Margaret Robertson | 74 | Head | — | Scotland |
| 2 | Margaret Robertson THIS PERSON | 39 | Daughter | Operator Of Beauty Shop | Illinois |
| 3 | Robert Robertson | 44 | Son | Clerk | Illinois |
| 4 | Florence Robertson | 52 | Wife | — | Illinois |
| 5 | John Schneider | 76 | Head | — | Germany |
| 6 | Margaret Schneider | 76 | Wife | — | Illinois |
| 7 | John Allen | 50 | Head | — | Northern Ireland |
| 8 | Eugene Henley | 52 | Head | Night Watchman | Illinois |
| 9 | Mary Henley | 44 | Wife | — | Northern Ireland |
| 10 | George Mccullough | 36 | Head | Specialty Salesman | Illinois |
| 11 | Al Mccullough | 36 | Wife | — | Illinois |
| 12 | George Jr. Mccullough | 10 | Son | — | Illinois |
| 13 | Alma Living | 46 | Lodger | — | Illinois |
| 14 | Anna Mulvihill | 69 | Head | — | Illinois |
| 15 | Charles Mulvihill | 47 | Son | — | Illinois |
| 16 | William Cook | 75 | Lodger | — | Illinois |
| 17 | Laura Bicknell | 59 | Head | — | Illinois |
| 18 | Nancy Halligan | 81 | Lodger | — | Illinois |
| 19 | James Halligan | 51 | Lodger | — | Illinois |
| 20 | Frank Murray | 46 | Head | Janitor | Maryland |
| 21 | Katherine Murray | 45 | Wife | Waitress | Illinois |
| 22 | Dorothy Murray | 13 | Daughter | — | Illinois |
| 23 | Arthur Bischoff | 40 | Head | Steam Fitter | Illinois |
| 24 | Anton Marlin | 67 | Lodger | — | Montana |
| 25 | Mary Nanny | 41 | Lodger | Seamstress | Illinois |
| 26 | Henry Zebulski | 53 | Lodger | Laborer | Wisconsin |
| 27 | Mary Zebulski | 55 | Wife | — | Hungary |
| 28 | Fred Snyder | 21 | Step-son | Coal Deliverer | Illinois |
| 29 | Mathias Thomas | 53 | Head | Horseshoer | Illinois |
| 30 | James Hilling | 62 | Head | — | Ohio |
| 31 | Ellen Lyons | 80 | Head | — | Northern Ireland |
| 32 | Anna Lyons | 57 | Sister | — | Ireland |
| 33 | Frank Mulvaney | 46 | Head | — | Illinois |
| 34 | William Klein | 76 | Head | — | France |
| 35 | William Collins | 61 | Head | — | Illinois |
| 36 | John Davis | 45 | Head | — | Kentucky |
| 37 | Henry Mega | 39 | Head | Salesman | Arizona |
| 38 | Katherine Mega | 43 | Wife | — | Illinois |
| 39 | Andrew Lamont | 41 | Head | — | Illinois |
Pedigree Summary
Margaret + 1 sibling
Gen 1 · 2 parents
~0.92
Max depth 4 (1900–1950 window)
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)