WC
William Casey — 1940 US Census Record
Model Tree available1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this William Casey across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents William & Frank — first a head (b.~1905), then head of a 3-person household.
Age 35
b. ~1905
Male
Head
Born: Massachusetts
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Casey |
| Given Name | William F. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Medford City |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | Legal Department |
| Industry | Insurance Company |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 1768 |
| Highest Grade | Hs 3 |
| 1935 Residence | Same house |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Legal Department |
| Township / Ward | Medford City |
| Est. Birth Year | ~1905 |
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 William | Age | Birth yr |
|---|---|---|---|---|
| William Casey | Head | — | 35 | ~1905 |
| William Casey | Son | — | 1 | ~1939 |
| Helen Casey | Spouse | — | 33 | ~1907 |
Census Appearances
1920
Middlesex, Massachusetts
Son, age 12
Middlesex, Massachusetts · implied b. ~1908 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Casey |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Son, age 23
Middlesex, Massachusetts · implied b. ~1907 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Casey |
| Given Name | William F. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Chauffeur |
| Industry | Newspapers |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Head, age 35
Middlesex-County, Massachusetts · implied b. ~1905 — 3 household members
| Surname | Casey |
| Given Name | William F. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Medford City |
| 1935 Residence (County) | Middlesex |
| Occupation | Legal Department |
| Industry | Insurance Company |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 1768 |
| Highest Grade | Hs 3 |
| 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 William Casey across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father William Casey (~0.92 confidence) and father Frank Casey (~0.92 confidence) and mother Mary Casey (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Casey
b. ~1868
Source father
● Household
· direct · ~0.92
Father
Frank Casey
b. ~1876
Source father
● Household
· direct · ~0.92
Mother
Mary Casey
b. ~1877
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Casey
Head · 1940 · age 35 · b. ~1905 · 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-t0627-01612-00721)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Walter Harold | 10 | Son | — | Massachusetts |
| 42 | Walter W. Dickson | 61 | Head | Treasurer | Maine |
| 43 | James W. Dickson | 64 | Wife | — | Connecticut |
| 44 | Alice Wilbur | 82 | Lodger | — | Maine |
| 45 | Vance N. Libbey | 42 | Head | Clerk | Maine |
| 46 | Ruth M. Libbey | 39 | Wife | — | Massachusetts |
| 47 | Donald V. Libbey | 20 | Son | Office Work | Massachusetts |
| 48 | George R. Libbey | 17 | Son | — | Massachusetts |
| 49 | Marsha Libbey | 3 | Daughter | — | Massachusetts |
| 50 | Doris E. Doane | 19 | Niece | — | Massachusetts |
| 51 | Frank F. Warren | 62 | Head | Probation Officer | Massachusetts |
| 52 | Carolyn V. Warren | 61 | Wife | — | Massachusetts |
| 53 | William J. Knight | 44 | Head | Sales Manager | Massachusetts |
| 54 | Emma J. Knight | 42 | Wife | — | Massachusetts |
| 55 | Ronald Knight | 14 | Son | — | Massachusetts |
| 56 | George F. Mclean | 38 | Head | Manager | Massachusetts |
| 57 | Rachel B. Mclean | 31 | Wife | — | Eire |
| 58 | Lois H. Mclean | 2 | Daughter | — | Massachusetts |
| 59 | Frank Hutchings | 41 | Head | Collector | Massachusetts |
| 60 | Edith C. Hutchings | 43 | Wife | — | Massachusetts |
| 61 | William F. Casey THIS PERSON | 35 | Head | Legal Department | Massachusetts |
| 62 | Helen D. Casey | 33 | Wife | — | Massachusetts |
| 63 | William F. Casey | 1 | Son | — | Massachusetts |
| 64 | Howard F. Greenwood | 48 | Head | Lunch Room | England |
| 65 | Carrie G. Greenwood | 48 | Wife | — | Massachusetts |
| 66 | Helen F. Greenwood | 23 | Daughter | Waitress | Massachusetts |
| 67 | Ralph Smith | 24 | Head | Salesman | Massachusetts |
| 68 | Barbara Smith | 24 | Wife | — | Massachusetts |
| 69 | Sydney R. Iday | Iloy | 56 | Head | Salesman | Canada |
| 70 | Margaret P. Iday | Iloy | 51 | Wife | — | England |
| 71 | Laurence R. Leach | 32 | Head | Advertising Manager | Massachusetts |
| 72 | Priscilla Leach | 32 | Wife | — | Massachusetts |
| 73 | Anthony D. Leach | 1 | Son | — | Massachusetts |
| 74 | Ferdinand Pompence | 37 | Head | Teacher | Massachusetts |
| 75 | Doris S. Pompence | 34 | Wife | — | Massachusetts |
| 76 | Elmer G. Spinnery | 38 | Head | Salesman | Massachusetts |
| 77 | Hazel M. Spinnery | 33 | Wife | — | Canada |
| 78 | Richard G. Spinnery | 2 | Son | — | Massachusetts |
| 79 | James R. Welch | 55 | Head | Accountant | Massachusetts |
| 80 | Alma M. Welch | 62 | Wife | — | England |
Pedigree Summary
William
Gen 1 · 3 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)