BK
Betty King — 1940 US Census Record
Model Tree available1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Betty King across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Ludovic & Aldea — first a daughter (b.~1918), then head of a 5-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 | Betty |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | Black |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Cambridge |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Highest Grade | H 1 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Cambridge |
| 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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Betty | Age | Birth yr |
|---|---|---|---|---|
| Carlena King | Head | — | 46 | ~1894 |
| Betty King | Daughter | — | 22 | ~1918 |
| Ralph King | Son | — | 25 | ~1915 |
| James King | Son | — | 28 | ~1912 |
| Carlena King | Daughter | — | 27 | ~1913 |
Census Appearances
1920
Worcester, Massachusetts
Daughter, age 2
Worcester, Massachusetts · implied b. ~1918 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | King |
| Given Name | Beatrice |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Canada French |
| Mother Tongue | French |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Worcester, Massachusetts
Daughter, age 12
Worcester, Massachusetts · implied b. ~1918 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | King |
| Given Name | Beatrice |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Canada French |
| Occupation | none |
| 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 — 5 household members
| Surname | King |
| Given Name | Betty |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | Black |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Cambridge |
| 1935 Residence (County) | Middlesex |
| Highest Grade | H 1 |
| 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 Betty King across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Ludovic King (~0.92 confidence) and mother Aldea King (~0.92 confidence) and mother Carlena King (~0.92 confidence) and mother Ida King (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Ludovic King
b. ~1897
Source father
● Household
· direct · ~0.92
Mother
Aldea King
b. ~1898
Source mother
● Household
· direct · ~0.92
Mother
Carlena King
b. ~1894
Source mother
● Household
· direct · ~0.92
Mother
Ida King
b. ~1898
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Betty King
Daughter · 1940 · age 22 · b. ~1918 · Massachusetts
★ You are viewing this record
Sibling
Ralph King
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James King
Sibling · 1940 · age 28
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Carlena King
Sibling · 1940 · age 27
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-t0627-01683-00492)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Miriam Phillips | 25 | daughter | New Worker | Massachusetts |
| 42 | Jabez Phillips | 20 | son | Seaman | Massachusetts |
| 43 | George Phillips | 18 | son | Kitchen | Massachusetts |
| 44 | George Simms | 39 | Head | Electrician | New York |
| 45 | Margarette Simms | 29 | wife | — | Massachusetts |
| 46 | Lucy Jackson | 54 | Head | — | Virginia |
| 47 | David Jackson | 28 | son | Manager | Massachusetts |
| 48 | William Turner | 58 | Head | — | Pennsylvania |
| 49 | Joseph Berryman | 55 | boarder | Laborer | Pennsylvania |
| 50 | William Harris | 21 | boarder | Kitchen | Massachusetts |
| 51 | Harold Hector | 29 | Head | Laborer | New Brunswick |
| 52 | Eleanor Hector | 21 | wife | — | Massachusetts |
| 53 | Lorraine Hector | 1 | daughter | — | Massachusetts |
| 54 | Henrietta Alston | 21 | Head | — | N. Carolina |
| 55 | Freeman Pleasant | 58 | Head | — | Nova Scotia |
| 56 | Lottie Pleasant | 56 | wife | — | Nova Scotia |
| 57 | James Pleasant | 27 | son | — | Nova Scotia |
| 58 | Carlena King | 46 | Head | — | Massachusetts |
| 59 | James King | 28 | son | Laborer | Massachusetts |
| 60 | Carlena King | 27 | daughter | — | Massachusetts |
| 61 | Ralph King | 25 | son | — | Massachusetts |
| 62 | Betty King THIS PERSON | 22 | daughter | — | Massachusetts |
| 63 | James Powell | 55 | Head | — | N. Carolina |
| 64 | Nellie Powell | 49 | wife | — | N. Carolina |
| 65 | James Powell | 21 | son | Laborer | Massachusetts |
| 66 | Emily Powell | 18 | daughter | New Worker | Massachusetts |
| 67 | Richard Powell | 14 | son | — | Massachusetts |
| 68 | Dorothy Powell | 11 | daughter | — | Massachusetts |
| 69 | Robert Powell | 8 | son | — | Massachusetts |
| 70 | George Woodward | 37 | Head | Electrical | Maine |
| 71 | Elizabeth Woodward | 40 | wife | — | Massachusetts |
| 72 | Dorothy Woodward | 18 | daughter | — | Massachusetts |
| 73 | Silvis Batteli | 33 | Head | Proprietor | Rio de Janeiro |
| 74 | Concetta Batteli | 36 | wife | — | Italy |
| 75 | Rose Marie Batteli | 8 | daughter | — | Massachusetts |
| 76 | Mary Batteli | 7 | daughter | — | Massachusetts |
| 77 | Sylvio Batteli | 4 | son | — | Massachusetts |
| 78 | Grace Valatka | 54 | Head | — | Lithuania |
| 79 | Julia Valatka | 27 | daughter | Inspector | Massachusetts |
| 80 | Joseph Valatka | 26 | son | Operator Mach. | Massachusetts |
Pedigree Summary
Betty + 3 siblings
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)