MP
Martha Peterson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Essex-County, Massachusetts
Our Model Tree links this Martha Peterson across the 1920, 1930 and 1940 US Censuses in Essex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Oscar & Anna — first a daughter (b.~1911), then head of a 3-person household.
Age 29
b. ~1911
Female
Daughter
Born: New Hampshire
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Essex-County, Massachusetts |
| Surname | Peterson |
| Given Name | Martha A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | New Hampshire |
| 1935 Residence (City) | Lynn city |
| 1935 Residence (County) | Essex |
| Additional Details | |
| Occupation | demand meter repair girl |
| Industry | electrical machinery factory |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1040 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same place |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
| Occupation | Demand Meter Repair Girl |
| Township / Ward | Lynn City |
| Est. Birth Year | ~1911 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Martha | Age | Birth yr |
|---|---|---|---|---|
| Hazel Peterson | Daughter | — | 23 | ~1917 |
| Anna Peterson | Head | — | 60 | ~1880 |
| Martha Peterson | Daughter | — | 29 | ~1911 |
Census Appearances
1920
Essex, Massachusetts
Daughter, age 9
Essex, Massachusetts · implied b. ~1911 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Martha E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | New Hampshire |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| 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 19
Essex, Massachusetts · implied b. ~1911 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Petersen |
| Given Name | Martha E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | New Hampshire |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Press Operator |
| Industry | Appliance Co |
| 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 29
Essex-County, Massachusetts · implied b. ~1911 — 3 household members
| Surname | Peterson |
| Given Name | Martha A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | New Hampshire |
| 1935 Residence (City) | Lynn city |
| 1935 Residence (County) | Essex |
| Occupation | demand meter repair girl |
| Industry | electrical machinery factory |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1040 |
| Highest Grade | Hs 1 |
| 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 Martha Peterson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Oscar Peterson (~0.92 confidence) and mother Anna Peterson (~0.92 confidence) and mother Anna Petersen (~0.92 confidence) and mother Anna Peterson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Oscar Peterson
b. ~1884
Source father
● Household
· direct · ~0.92
Mother
Anna Peterson
b. ~1880
Source mother
● Household
· direct · ~0.92
Mother
Anna Petersen
b. ~1880
Source mother
● Household
· direct · ~0.92
Mother
Anna Peterson
b. ~1880
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Martha Peterson
Daughter · 1940 · age 29 · b. ~1911 · Massachusetts
★ You are viewing this record
Sibling
Hazel Peterson
Sibling · 1940 · age 23
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-t0627-01697-00629)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Matthew Gallagher | 46 | Head | Laborer | Eire |
| 2 | Hanora Gallagher | 39 | Wife | — | Eire |
| 3 | Matthew Jr. Gallagher | 15 | Son | — | Mass |
| 4 | Mary Ellen Gallagher | 12 | Daughter | — | Mass |
| 5 | Benjamin Gallagher | 10 | Son | — | Mass |
| 6 | John J. Gallagher | 9 | Son | — | Mass |
| 7 | Hanora Gallagher | 7 | Daughter | — | Mass |
| 8 | Peter Gallagher | 5 | Son | — | Mass |
| 9 | Theresa Gallagher | 2 | Daughter | — | Mass |
| 10 | Harry E. Wickham | 64 | Head | Salesman | New York |
| 11 | Anna Wickham | 63 | Wife | — | New York |
| 12 | Helen P. Wickham | 34 | Daughter | Art Supervisor | New York |
| 13 | Mary Higgins | 69 | Head | — | Mass |
| 14 | Mary E. Higgins | 31 | Niece | Clerk | Mass |
| 15 | Virginia Higgins | 23 | Niece | Assembler | Mass |
| 16 | Gertrude Dorsey | 22 | Lodger | — | New York |
| 17 | Anna L. Peterson | 60 | Head | — | Sweden |
| 18 | Martha A. Peterson THIS PERSON | 29 | Daughter | Demand Meter Repair Girl | New Hampshire |
| 19 | Hazel Peterson | 23 | Daughter | Foundry Worker | Mass |
| 20 | Ernest R. Erickson | 35 | Head | Electrician Boss | Mass |
| 21 | Elsie F. Erickson | 31 | Wife | — | Mass |
| 22 | Robert Howard | 41 | Head | Welder | Mass |
| 23 | Vera Howard | 30 | Wife | — | Mass |
| 24 | Robert Howard | 8 | Son | — | Mass |
| 25 | Claire Howard | 3 | Daughter | — | Mass |
| 26 | Thomas Mclaughlin | 26 | Head | Bartender | Mass |
| 27 | Lillian Mclaughlin | 20 | Wife | — | Mass |
| 28 | Wayne Mclaughlin | 1 | Son | — | Mass |
| 29 | Mary O'Brien | 77 | Head | — | Scotland |
| 30 | Peter O'Brien | 45 | Son | Mechanic | Mass |
| 31 | Susie E. Murray | 63 | Sister | Stitcher | Scotland |
| 32 | Margaret F. Devine | 48 | Head | Stenographer | Mass |
| 33 | Peter G. Devine | 46 | Brother | Cat Clerk | Mass |
| 34 | Mary A. Devine | 43 | Sister | — | Mass |
| 35 | Annie D. Lothrop | 40 | Sister | Nurse | Mass |
| 36 | Gordon L. Perry | 50 | Head | Machinist | Canada-English |
| 37 | Fanny Perry | 52 | Wife | — | Mass |
| 38 | Gordon L. Jr. Perry | 25 | Son | Sprayer | Mass |
| 39 | Earl W. Perry | 23 | Son | Screw Mach. Operator | Mass |
| 40 | Urgel Collette | 69 | Head | — | Canada-French |
Pedigree Summary
Martha + 1 sibling
Gen 1 · 4 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)