AP
Agnes Peterson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this Agnes Peterson across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1926), then head of a 9-person household.
Age 14
b. ~1926
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Peterson |
| Given Name | Agnes M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same house |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Boston |
| Est. Birth Year | ~1926 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Agnes | Age | Birth yr |
|---|---|---|---|---|
| Margaret Peterson | Daughter | — | 9 | ~1931 |
| Arthur Peterson | Son | — | 18 | ~1922 |
| Arthur Peterson | Head | — | 42 | ~1898 |
| Agnes Peterson | Daughter | — | 14 | ~1926 |
| Kenneth Peterson | Son | — | 6 | ~1934 |
| Charles Peterson | Son | — | 11 | ~1929 |
| Hama Peterson | Spouse | — | 42 | ~1898 |
| Clifford Peterson | Son | — | 3 | ~1937 |
| John Peterson | Son | — | 16 | ~1924 |
Census Appearances
1930
Suffolk, Massachusetts
Daughter, age 4
Suffolk, Massachusetts · implied b. ~1926 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Agnes M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read/Write | No |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Daughter, age 14
Suffolk-County, Massachusetts · implied b. ~1926 — 9 household members
| Surname | Peterson |
| Given Name | Agnes M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 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 Agnes Peterson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Agnes Peterson
Daughter · 1940 · age 14 · b. ~1926 · Massachusetts
★ You are viewing this record
Sibling
Margaret Peterson
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Peterson
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Clifford Peterson
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Arthur Peterson
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Peterson
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kenneth Peterson
Sibling · 1940 · age 6
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 — Suffolk-County, Massachusetts
Open full size
1940 US Federal Census — Suffolk-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01669-00146)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Walter J. West | 39 | Head | Chauffeur | Massachusetts |
| 2 | Anna West | 27 | Wife | Housewife | Massachusetts |
| 3 | Walter J. Jr. West | 2 | Son | — | Massachusetts |
| 4 | Margaret M. West | 5 | Daughter | — | Massachusetts |
| 5 | Richard C. West | 4 | Son | — | Massachusetts |
| 6 | Margaret Hamilton | 23 | Sister-in-law | Hair Dresser | Massachusetts |
| 7 | George H. Fortin | 41 | Head | Repair Man (Helper) | New Hampshire |
| 8 | Bella Fortin | 39 | Wife | Housewife | Massachusetts |
| 9 | George H. H. Fortin | 15 | Son | — | Massachusetts |
| 10 | Bella Fortin | 13 | Daughter | — | Massachusetts |
| 11 | Fernand Fortin | 11 | Son | — | Massachusetts |
| 12 | Robert E. Lawrence | 23 | Son-in-law | Machinist Helper | Massachusetts |
| 13 | Josephine M. Lawrence | 22 | Daughter | Thread Winder | Massachusetts |
| 14 | John J. Mcgloin | 47 | Head | Chauffeur | Massachusetts |
| 15 | Cecelia Mcgloin | 30 | Wife | Housewife | Maine |
| 16 | Genevieve Mcgloin | 11 | Daughter | — | Massachusetts |
| 17 | James Mcgloin | 3 | Son | — | Massachusetts |
| 18 | Virginia Mcgloin | 1 | Daughter | — | Massachusetts |
| 19 | Donald J. Macfarlane | 35 | Head | Roofer | Nova Scotia |
| 20 | Mary M. Macfarlane | 41 | Wife | Housewife | Nova Scotia |
| 21 | Catherine A. Macfarlane | 7 | Daughter | — | Massachusetts |
| 22 | Shirley F. Macfarlane | 4 | Daughter | — | Massachusetts |
| 23 | Joseph H. Macfarlane | 3 | Son | — | Massachusetts |
| 24 | Myrna L. Macfarlane | 0 | Daughter | — | Massachusetts |
| 25 | James F. Lynch | 34 | Head | Salesman | Massachusetts |
| 26 | Catherine M. Lynch | 30 | Wife | Housewife | Massachusetts |
| 27 | James Lynch | 7 | Son | — | Massachusetts |
| 28 | Patricia H. Smith | 3 | Grand-daughter | — | Massachusetts |
| 29 | James J. Driscoll | 50 | Head | Fireman | Massachusetts |
| 30 | Barbara M. Driscoll | 16 | Daughter | — | Massachusetts |
| 31 | Kathryn L. Driscoll | 56 | Sister | Telephone Operator | Massachusetts |
| 32 | Arthur O. Peterson | 42 | Head | Painter | Massachusetts |
| 33 | Hama E. Peterson | 42 | Wife | Housewife | Massachusetts |
| 34 | Arthur O. Peterson | 18 | Son | New Worker | Massachusetts |
| 35 | John R. Peterson | 16 | Son | — | Massachusetts |
| 36 | Agnes M. Peterson THIS PERSON | 14 | Daughter | — | Massachusetts |
| 37 | Charles W. Peterson | 11 | Son | — | Massachusetts |
| 38 | Margaret E. Peterson | 9 | Daughter | — | Massachusetts |
| 39 | Kenneth C. Peterson | 6 | Son | — | Massachusetts |
| 40 | Clifford W. Peterson | 3 | Son | — | Massachusetts |
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)