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Frederick Williams — 1940 US Census Record
Model Tree available1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Frederick Williams across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Ferdinand & Elizabeth — first a head (b.~1892), then head of a 4-person household.
Age 48
b. ~1892
Male
Head
Born: Rhode Island
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Williams |
| Given Name | Frederick |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Rhode Island |
| 1935 Residence (City) | Medford, city |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | Compositor |
| Industry | Printing |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 2200 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
| Occupation | Compositor |
| Township / Ward | Medford City |
| Est. Birth Year | ~1892 |
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 Frederick | Age | Birth yr |
|---|---|---|---|---|
| John Williams | Son | — | 16 | ~1924 |
| Anne Williams | Spouse | — | 44 | ~1896 |
| Paul Williams | Son | — | 13 | ~1927 |
| Frederick Williams | Head | — | 48 | ~1892 |
Census Appearances
1920
Middlesex, Massachusetts
Son, age 25
Middlesex, Massachusetts · implied b. ~1895 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williams |
| Given Name | Frederick T. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Rhode Island |
| Father's Birthplace | Rhode Island |
| Mother's Birthplace | Rhode Island |
| Occupation | Foreman |
| Industry | Press Co |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
1930
Middlesex, Massachusetts
Head, age 35
Middlesex, Massachusetts · implied b. ~1895
●
Primary link
· ~Confirmed · 1 source
XGBoost
| Surname | William |
| Given Name | Frederick |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Rhode Island |
| Age at First Marriage | 28 |
| Father's Birthplace | Rhode Island |
| Mother's Birthplace | Rhode Island |
| Occupation | Pressman |
| Industry | Newspaper |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | WW |
| Home Value / Rent | R |
| Veteran | yes |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
1940
Middlesex-County, Massachusetts
Head, age 48
Middlesex-County, Massachusetts · implied b. ~1892 — 4 household members
| Surname | Williams |
| Given Name | Frederick |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Rhode Island |
| 1935 Residence (City) | Medford, city |
| 1935 Residence (County) | Middlesex |
| Occupation | Compositor |
| Industry | Printing |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 2200 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
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 Frederick Williams across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Ferdinand Williams (~0.92 confidence) and mother Elizabeth Williams (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Ferdinand Williams
b. ~1867
Source father
● Household
· direct · ~0.92
Mother
Elizabeth Williams
b. ~1864
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Frederick Williams
Head · 1940 · age 48 · b. ~1892 · Massachusetts
★ You are viewing this record
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-t0627-01612-00996)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Blanche Bratton | 36 | Wife | — | Mass |
| 42 | Janette Bratton | 7 | daughter | — | Mass |
| 43 | George Bratton | 4 | son | — | Mass |
| 44 | Stephen Stavropulos | 44 | Head | Salesman | Greece |
| 45 | Mary Stavropulos | 49 | Wife | — | Greece |
| 46 | Joanna Stavropulos | 13 | daughter | — | Mass |
| 47 | William Stavropulos | 12 | Son | — | Mass |
| 48 | Peter Stavropulos | 7 | son | — | Mass |
| 49 | Ralph Diggi | 51 | Head | Candy Maker | Italy |
| 50 | Nellie Diggi | 48 | Wife | — | Italy |
| 51 | Gubitosi Esther Diggi | 81 | motherinlaw | — | Italy |
| 52 | C. Roy Smith | 54 | Head | Assistant Manager | Maine |
| 53 | Eliza Smith | 55 | Wife | — | Maine |
| 54 | Bartholomew Doherty | 50 | Head | Correction Officer | Mass |
| 55 | Mary Doherty | 49 | Wife | — | Mass |
| 56 | Ronald Hyde | 40 | Head | Salesman | Mass |
| 57 | Mary Hyde | 38 | Wife | Nurse | Mass |
| 58 | Ronald Hyde | 10 | son | — | Mass |
| 59 | Anna Hyde | 8 | daughter | — | Mass |
| 60 | John Hyde | 3 | son | — | Mass |
| 61 | Harry Delmore | 48 | Head | Constable | Mass |
| 62 | Florence Delmore | 43 | Wife | — | Mass |
| 63 | June Delmore | 19 | daughter | Mess Worker | Mass |
| 64 | Virginia Delmore | 12 | daughter | — | Mass |
| 65 | Thomas Wall | 47 | Head | Engineer | Canada English |
| 66 | Catherine Wall | 48 | Wife | — | Canada English |
| 67 | Rita Wall | 12 | daughter | — | Mass |
| 68 | Thomas G. Wall | 10 | son | — | Mass |
| 69 | Loretta M. Wall | 9 | daughter | — | Mass |
| 70 | Francis M. Wall | 6 | son | — | Mass |
| 71 | Mary Fortune | 61 | Head | Clerk | Mass |
| 72 | Rose B. Fortune | 65 | sister | — | Mass |
| 73 | Catherine Fortune | 47 | sister | Secretary | Mass |
| 74 | John Fortune | 50 | Brother | Salesman | Mass |
| 75 | Frederick Williams THIS PERSON | 48 | Head | Compositor | Rhode Island |
| 76 | Anne Williams | 44 | Wife | — | Mass |
| 77 | John Williams | 16 | son | — | Mass |
| 78 | Paul Williams | 13 | son | — | Mass |
| 79 | William Mcsweeney | 35 | Head | Compositor | Mass |
| 80 | Mary Mcsweeney | 34 | Wife | — | Mass |
Pedigree Summary
Frederick
Gen 1 · 2 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)