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Catherine King — 1940 US Census Record
Model Tree available1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Catherine King across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents John & John — 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 | King |
| Given Name | Catherine |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | City of Somerville |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | new worker |
| Class of Worker | PW |
| Income (1939) | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | New Worker |
| Township / Ward | City Of Somerville |
| 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 Catherine | Age | Birth yr |
|---|---|---|---|---|
| Catherine King | Daughter | — | 22 | ~1918 |
| John King | Head | — | 24 | ~1916 |
| Joseph King | Son | — | 19 | ~1921 |
| Gertrude King | Daughter | — | 12 | ~1928 |
Census Appearances
1920
Middlesex, Massachusetts
Daughter, age
Middlesex, Massachusetts · implied b. ~1920 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | King |
| Given Name | Catherine |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | none |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Daughter, age 11
Middlesex, Massachusetts · implied b. ~1919 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | King |
| Given Name | Catherine M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| 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 | King |
| Given Name | Catherine |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | City of Somerville |
| 1935 Residence (County) | Middlesex |
| Occupation | new worker |
| Class of Worker | PW |
| Income (1939) | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| 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 Catherine King across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John King (~0.92 confidence) and father John King (~0.92 confidence) and mother Elizabeth King (~0.92 confidence) and father Michael King (~0.55 confidence) and father John King (~0.60 confidence). The pedigree spans 2 generations with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.78
Father
John King
b. ~1878
Source father
● Household
· direct · ~0.92
Father
John King
b. ~1878
Source father
● Household
· direct · ~0.92
Mother
Elizabeth King
b. ~1885
Source mother
● Household
· direct · ~0.92
Father
Michael King
b. ~1885
Source father>father
● Household
· direct · ~0.55
Father
John King
b. ~1916
Source father
● Household
· direct · ~0.6
This person
Anchor record
Catherine King
Daughter · 1940 · age 22 · b. ~1918 · Massachusetts
★ You are viewing this record
Sibling
Joseph King
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gertrude King
Sibling · 1940 · age 12
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
39 people indexed on this census page (nara:1940:m-t0627-01702-00855)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John King | 24 | Head | Stable Hand | Massachusetts |
| 2 | Catherine King THIS PERSON | 22 | Daughter | New Worker | Massachusetts |
| 3 | Joseph King | 19 | Son | New Worker | Massachusetts |
| 4 | Gertrude King | 12 | Daughter | — | Massachusetts |
| 5 | John Laurie | 31 | Head | Cook | Massachusetts |
| 6 | Charlotte Laurie | 31 | Wife | — | Germany |
| 7 | Donald Laurie | 7 | Son | — | Massachusetts |
| 8 | Vincent Ferrarini | 65 | Head | Laborer | Italy |
| 9 | Olga Ferrarini | 54 | Wife | — | Italy |
| 10 | Catherine Ferrarini | 27 | Daughter | Seamstress | Massachusetts |
| 11 | Richard Grossi | 30 | Head | Laborer | Massachusetts |
| 12 | Louise Grossi | 25 | Wife | Machine Operator | Massachusetts |
| 13 | Richard Grossi | 2 | Son | — | Massachusetts |
| 14 | Angelo Bretta | 63 | Head | Dishwasher | Italy |
| 15 | Bonilla Bretta | 56 | Wife | — | Italy |
| 16 | Mary Bretta | 36 | Daughter | — | Massachusetts |
| 17 | Joseph Bretta | 32 | Son | Musician | Massachusetts |
| 18 | Emma Bretta | 29 | Daughter | Packer | Massachusetts |
| 19 | Guido Bretta | 25 | Son | Chauffeur | Massachusetts |
| 20 | Leo Bretta | 19 | Son | Shipper | Massachusetts |
| 21 | Lawrence Bretta | 12 | Son | — | Massachusetts |
| 22 | Vincent Bucci | 52 | Boarder | Dishwasher | Italy |
| 23 | Thomas Luther | 53 | Head | Laborer | Eire |
| 24 | Mary Luther | 50 | Wife | — | Eire |
| 25 | John Luther | 13 | Son | — | Massachusetts |
| 26 | Arthur White | 67 | Head | Mechanic | Maine |
| 27 | Elizabeth White | 67 | Sister | Housekeeper | Massachusetts |
| 28 | William Paoline | 33 | Head | Rollerman | Lithuania |
| 29 | Evelyn Paoline | 27 | Wife | — | Pennsylvania |
| 30 | Carol Paoline | 0 | Daughter | — | Massachusetts |
| 31 | Manuel Medeiros | 64 | Head | Barber | Portugal |
| 32 | Lidia Medeiros | 54 | Wife | — | Portugal |
| 33 | Aldina Medeiros | 24 | Daughter | Stitcher | Portugal |
| 34 | William Mickelson | 45 | Head | Meat Packer | Scotland |
| 35 | Florence Mickelson | 35 | Wife | — | New Jersey |
| 36 | Antonio Vieira | 46 | Head | Painter | Portugal |
| 37 | Murdo Lean | 32 | Head | Painter | Scotland |
| 38 | Catherine Lean | 25 | Wife | — | Massachusetts |
| 39 | Kenneth Lean | 0 | Son | — | Massachusetts |
Pedigree Summary
Catherine + 2 siblings
Gen 1 · 4 parents
~0.84
Gen 2 · 1 grandparents
~0.55
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)