MS
Margaret Simmons — 1940 US Census Record
Model Tree available1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Margaret Simmons across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Fred & Bertha — first a daughter (b.~1918), then head of a 4-person household.
Age 22
b. ~1918
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Simmons |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Medford City |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | Typist |
| Industry | Life Insurance |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 750 |
| Highest Grade | H-4 |
| 1935 Residence | Same House |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Typist |
| Township / Ward | Medford City |
| Est. Birth Year | ~1918 |
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 |
|---|---|---|---|---|
| Bertha Simmons | Head | — | 42 | ~1898 |
| Margaret Simmons | Daughter | — | 22 | ~1918 |
| Donald Simmons | Son | — | 18 | ~1922 |
| Lois Simmons | Daughter | — | 15 | ~1925 |
Census Appearances
1920
Middlesex, Massachusetts
Daughter, age 2
Middlesex, Massachusetts · implied b. ~1918 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Simmons |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Vermont |
| Mother's Birthplace | Massachusetts |
| Occupation | none |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Daughter, age 12
Middlesex, Massachusetts · implied b. ~1918 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Simmons |
| Given Name | Margaret E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Vermont |
| Mother's Birthplace | Massachusetts |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Daughter, age 22
Middlesex-County, Massachusetts · implied b. ~1918 — 4 household members
| Surname | Simmons |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Medford City |
| 1935 Residence (County) | Middlesex |
| Occupation | Typist |
| Industry | Life Insurance |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 750 |
| Highest Grade | H-4 |
| 1935 Residence | Same House |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
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 Simmons across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Fred Simmons (~0.92 confidence) and mother Bertha Simmons (~0.92 confidence) and mother Bertha Simmons (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Fred Simmons
b. ~1891
Source father
● Household
· direct · ~0.92
Mother
Bertha Simmons
b. ~1898
Source mother
● Household
· direct · ~0.92
Mother
Bertha Simmons
b. ~1898
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Margaret Simmons
Daughter · 1940 · age 22 · b. ~1918 · Massachusetts
★ You are viewing this record
Sibling
Lois Simmons
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Simmons
Sibling · 1940 · age 18
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 — Middlesex-County, Massachusetts
Open full size
1940 US Federal Census — Middlesex-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01612-00105)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Margaret Spicer | 56 | Mother | — | Canada-Eng |
| 42 | Charles J Burrows | 34 | Head | Foreman | Massachusetts |
| 43 | Helen F Burrows | 32 | Wife | — | Massachusetts |
| 44 | Robert C Burrows | 4 | Son | — | Massachusetts |
| 45 | Diane G Burrows | 2 | Daughter | — | Massachusetts |
| 46 | Frederick Kee | 29 | Head | Ice Man | Massachusetts |
| 47 | Agnes C Kee | 25 | Wife | — | Massachusetts |
| 48 | Mildred Kee | 6 | Daughter | — | Massachusetts |
| 49 | Carol Kee | 1 | Daughter | — | Massachusetts |
| 50 | Bertha Simmons | 42 | Head | Cafeteria Manager | Massachusetts |
| 51 | Margaret Simmons THIS PERSON | 22 | Daughter | Typist | Massachusetts |
| 52 | Donald Simmons | 18 | Son | — | Massachusetts |
| 53 | Lois Simmons | 15 | Daughter | — | Massachusetts |
| 54 | Edward H Bovey | 73 | Head | — | Massachusetts |
| 55 | Mary E Bovey | 63 | Wife | — | New York |
| 56 | Emma Bovey | 26 | Niece | Stenographer | Massachusetts |
| 57 | Benjamin Wilkins | 32 | Head | Book Binder | Massachusetts |
| 58 | Florence Wilkins | 32 | Wife | — | Massachusetts |
| 59 | Clifford S Wilkins | 11 | Son | — | Massachusetts |
| 60 | William Walker | 67 | Head | Carpenter | New York |
| 61 | Norman Walker | 26 | Brother | Box Maker | Massachusetts |
| 62 | Irene E Ball | 41 | Sister | Finisher | Massachusetts |
| 63 | George E Keough | 32 | Head | Book Binder | Massachusetts |
| 64 | Jessie Keough | 25 | Wife | — | Scotland |
| 65 | George Jr Keough | 1 | Son | — | Massachusetts |
| 66 | William H De Laurier | 53 | Head | Research Man | Canada-French |
| 67 | Flora De Laurier | 48 | Wife | — | Canada-French |
| 68 | Elaine De Laurier | 26 | Daughter | Fashion Artist | Massachusetts |
| 69 | Phyllis De Laurier | 23 | Daughter | Secretary | Massachusetts |
| 70 | Jane De Laurier | 21 | Daughter | Secretary | Massachusetts |
| 71 | Albert F Mills | 36 | Head | Mechanic | Massachusetts |
| 72 | Mabel Mills | 34 | Wife | — | Massachusetts |
| 73 | Albert Jr Mills | 12 | Son | — | Massachusetts |
| 74 | Andrew J Teahy | 50 | Head | Printer | Massachusetts |
| 75 | Katherine Teahy | 48 | Wife | — | Massachusetts |
| 76 | Rita E Teahy | 14 | Daughter | — | Massachusetts |
| 77 | Percy Nalls | 34 | Head | Mechanic | Massachusetts |
| 78 | Catherine Nalls | 31 | Wife | Presser | Massachusetts |
| 79 | Rupert Mills | 58 | Head | Rigger | Canada-English |
| 80 | Janell Mills | 54 | Wife | — | Maine |
Pedigree Summary
Margaret + 2 siblings
Gen 1 · 3 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)