MC
Mary Collins — 1940 US Census Record
Model Tree available1940 United States Federal Census · Essex-County, Massachusetts
Our Model Tree links this Mary Collins across the 1920, 1930 and 1940 US Censuses in Essex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Daniel & Rose — first a daughter (b.~1900), then head of a 8-person household.
Age 40
b. ~1900
Female
Daughter
Born: New Hampshire
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Essex-County, Massachusetts |
| Surname | Collins |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Single |
| Birthplace | New Hampshire |
| 1935 Residence (City) | Lynn City |
| 1935 Residence (County) | Essex |
| Additional Details | |
| Occupation | Salesgirl |
| Industry | Retail Department Store |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 298 |
| Highest Grade | H 2 |
| 1935 Residence | Same place |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
| Occupation | Salesgirl |
| Township / Ward | Lynn City |
| Est. Birth Year | ~1900 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Helen Collins | Daughter | — | 32 | ~1908 |
| Mary Collins | Daughter | — | 40 | ~1900 |
| Clare Collins | Daughter | — | 22 | ~1918 |
| Rose Collins | Head | — | 65 | ~1875 |
| Frederick Collins | Son | — | 34 | ~1906 |
| Daniel Collins | Son | — | 25 | ~1915 |
| Robert Collins | Son | — | 28 | ~1912 |
| John Collins | Son | — | 39 | ~1901 |
Census Appearances
1920
Essex, Massachusetts
Daughter, age 20
Essex, Massachusetts · implied b. ~1900 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Collins |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | New Hampshire |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | New Hampshire |
| Occupation | Clerk |
| Industry | Grocery Store |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
1930
Essex, Massachusetts
Daughter, age 30
Essex, Massachusetts · implied b. ~1900 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Collins |
| Given Name | Mary E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | New Hampshire |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | New Hampshire |
| Occupation | Clerk |
| Industry | Variety Store |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
1940
Essex-County, Massachusetts
Daughter, age 40
Essex-County, Massachusetts · implied b. ~1900 — 8 household members
| Surname | Collins |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Single |
| Birthplace | New Hampshire |
| 1935 Residence (City) | Lynn City |
| 1935 Residence (County) | Essex |
| Occupation | Salesgirl |
| Industry | Retail Department Store |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 298 |
| Highest Grade | H 2 |
| 1935 Residence | Same place |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
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 Mary Collins across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Daniel Collins (~0.92 confidence) and mother Rose Collins (~0.92 confidence) and mother Rose Collins (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Daniel Collins
b. ~1867
Source father
● Household
· direct · ~0.92
Mother
Rose Collins
b. ~1877
Source mother
● Household
· direct · ~0.92
Mother
Rose Collins
b. ~1875
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Collins
Daughter · 1940 · age 40 · b. ~1900 · Massachusetts
★ You are viewing this record
Sibling
Robert Collins
Sibling · 1940 · age 28
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Collins
Sibling · 1940 · age 32
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frederick Collins
Sibling · 1940 · age 34
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Daniel Collins
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Collins
Sibling · 1940 · age 39
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Clare Collins
Sibling · 1940 · age 22
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 — Essex-County, Massachusetts
Open full size
1940 US Federal Census — Essex-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01695-00275)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Arthur D. Story | 27 | Head | Painter | Massachusetts |
| 42 | Mary S. Story | 45 | Wife | — | New Hampshire |
| 43 | Claudia O. Fleming | 75 | Head | — | Massachusetts |
| 44 | Donald B. Rowe | 28 | Head | Screw Machine Operator | Massachusetts |
| 45 | Olive M. Rowe | 28 | Wife | — | Massachusetts |
| 46 | Joseph A. Mcmanus | 51 | Head | Salesman | Massachusetts |
| 47 | Elizabeth A. Mcmanus | 47 | Wife | Saleswoman | Massachusetts |
| 48 | Joseph E. Mcmanus | 24 | Son | Attendant | Massachusetts |
| 49 | Richard L. Mcmanus | 19 | Son | — | Massachusetts |
| 50 | Freeman L. Clark | 34 | Head | Machinist | Massachusetts |
| 51 | Katherine V. Clark | 22 | Wife | — | Massachusetts |
| 52 | Freeman L. Clark | 3 | Son | — | Massachusetts |
| 53 | Orrin J. Symonds | 49 | Head | Conductor | Massachusetts |
| 54 | Lillian M. Symonds | 48 | Wife | — | Massachusetts |
| 55 | Richard C. Little | 27 | Head | Machinist | Massachusetts |
| 56 | Hazel M. Little | 26 | Wife | — | Massachusetts |
| 57 | Gail E. Little | 5 | Daughter | — | Massachusetts |
| 58 | Archibald Smith | 59 | Head | Carpenter | Canada English |
| 59 | Rachel Smith | 58 | Wife | — | Canada English |
| 60 | Otto C. Smith | 19 | Son | Carpenter | Canada English |
| 61 | Archibald D. Smith | 15 | Son | — | Canada English |
| 62 | Charles S. Parrott | 83 | Head | — | New Hampshire |
| 63 | Ruby E. Parrott | 52 | Daughter | Clerk | Massachusetts |
| 64 | Herbert E. Walsh | 26 | Head | Carpenter | Massachusetts |
| 65 | Natassa V. Walsh | 22 | Wife | — | Massachusetts |
| 66 | Rose A. Collins | 65 | Head | — | New Hampshire |
| 67 | Mary E. Collins THIS PERSON | 40 | Daughter | Salesgirl | New Hampshire |
| 68 | John B. Collins | 39 | Son | — | New Hampshire |
| 69 | Frederick B. Collins | 34 | Son | Machinist | Massachusetts |
| 70 | Helen R. Collins | 32 | Daughter | Librarian | Massachusetts |
| 71 | Robert J. Collins | 28 | Son | Salesman | Massachusetts |
| 72 | Daniel J. Collins | 25 | Son | Machinist | Massachusetts |
| 73 | Clare R. Collins | 22 | Daughter | Salesgirl | Massachusetts |
| 74 | Frances Davidson | 70 | Head | — | New Hampshire |
| 75 | Edwin B. Ames | 51 | Head | Baker | Massachusetts |
| 76 | Ethel I. Ames | 49 | Wife | Salesclerk | Massachusetts |
| 77 | James J. Heffernan | 42 | Head | Manager | Massachusetts |
| 78 | Florence G. Heffernan | 43 | Wife | — | Massachusetts |
| 79 | Rita M. Heffernan | 15 | Daughter | — | Massachusetts |
| 80 | William P. Heffernan | 11 | Son | — | Massachusetts |
Related Census Records
Pedigree Summary
Mary + 6 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)