WM
William Mack — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Essex-County, Massachusetts
Our Model Tree links this William Mack across the 1920, 1930 and 1940 US Censuses in Essex-County, Massachusetts (XGBoost, ~Confirmed) — first a head (b.~1869), then head of a 2-person household.
Age 71
b. ~1869
Male
Head
Born: England
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Essex-County, Massachusetts |
| Surname | Mack |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 71 |
| Marital Status | Widowed |
| Birthplace | England |
| 1935 Residence (City) | Lawrence City |
| 1935 Residence (County) | Essex |
| Naturalization Status | Naturalized |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | England |
| Birthplace (normalized) | england |
| Township / Ward | Lawrence City |
| Est. Birth Year | ~1869 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Ruth Mack | Daughter | — | 42 | ~1898 |
| William Mack | Head | — | 71 | ~1869 |
Census Appearances
1920
Essex, Massachusetts
Head, age 51
Essex, Massachusetts · implied b. ~1869 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mack |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 51 |
| Marital Status | Widowed |
| Birthplace | England |
| Year of Immigration | 1885 |
| Naturalization Status | Naturalized |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | Mule Spinner |
| Industry | Woolen Mill |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Birth Country | England |
| Year of Naturalization | 1895 |
| Birthplace (normalized) | england |
1930
Essex, Massachusetts
Head, age 61
Essex, Massachusetts · implied b. ~1869 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mack |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 61 |
| Marital Status | Widowed |
| Birthplace | England |
| Naturalization Status | Naturalized |
| Year of Immigration | 1889 |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | Retired |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Home Value / Rent | 16 |
| Radio Set | R |
| Birth Country | England |
| Birthplace (normalized) | england |
1940
Essex-County, Massachusetts
Head, age 71
Essex-County, Massachusetts · implied b. ~1869 — 2 household members
| Surname | Mack |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 71 |
| Marital Status | Widowed |
| Birthplace | England |
| 1935 Residence (City) | Lawrence City |
| 1935 Residence (County) | Essex |
| Naturalization Status | Naturalized |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | England |
| Birthplace (normalized) | england |
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 Mack across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
William Mack
Head · 1940 · age 71 · b. ~1869 · Massachusetts
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Essex-County, Massachusetts
Open full size
1940 US Federal Census — Essex-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01583-00418)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | James Raycraft | 34 | Head | Laborer | New Hampshire |
| 2 | Ann Raycraft | 25 | Wife | — | New Jersey |
| 3 | Catherine Raycraft | 5 | Daughter | — | Massachusetts |
| 4 | James Raycraft | 3 | Son | — | Massachusetts |
| 5 | Louis Raycraft | 2 | Daughter | — | Massachusetts |
| 6 | William Mack THIS PERSON | 71 | Head | — | England |
| 7 | Ruth M. Mack | 42 | Daughter | Twister | Massachusetts |
| 8 | Patrick J. O'Neil | 73 | Head | — | Eire |
| 9 | Christina O'Neil | 25 | Daughter | Doffer | Massachusetts |
| 10 | Susana Hill | 80 | Head | — | England |
| 11 | John G. Bircher | 53 | Head | Warp Dresser | Germany |
| 12 | Annie S. Bircher | 51 | Wife | — | Massachusetts |
| 13 | Vincent A. Hogan | 32 | Head | Floor Hand | Massachusetts |
| 14 | Elsie S. Hogan | 42 | Wife | Specker | Eire |
| 15 | S. Gladys Barker | 22 | Step-daughter | Inker | Eire |
| 16 | Frank Barker | 24 | Step-son | Cloth-Percher | Massachusetts |
| 17 | Daniel Gormley | 29 | Head | — | Eire |
| 18 | Mary Gormley | 70 | Wife | — | Eire |
| 19 | Samuel Ferrara | 24 | Head | Drummer | Massachusetts |
| 20 | Angela Ferrara | 24 | Wife | Jack Spinner | Massachusetts |
| 21 | John Ferrara | 1 | Son | — | Massachusetts |
| 22 | Azean M. Labonte | 29 | Wife | — | Massachusetts |
| 23 | James J. Labonte | 31 | Head | Electrical-Helper | Massachusetts |
| 24 | Leo J. Rancourt | 40 | Head | Floor Hand | Massachusetts |
| 25 | Mary E. Rancourt | 39 | Wife | — | Eire |
| 26 | Victor Rancourt | 19 | Son | Driver | Massachusetts |
| 27 | Claire Rancourt | 18 | Daughter | — | Massachusetts |
| 28 | Hector Rancourt | 16 | Son | Drivers Helper | Massachusetts |
| 29 | Leo Rancourt | 14 | Son | — | Massachusetts |
| 30 | Doris Rancourt | 12 | Daughter | — | Massachusetts |
| 31 | Mona Rancourt | 10 | Daughter | — | Massachusetts |
| 32 | Oscar Paul | 27 | Head | Trimmer | Massachusetts |
| 33 | Wanda Paul | 28 | Wife | Heel Cover | Massachusetts |
| 34 | Elinor Paul | 2 | Daughter | — | Massachusetts |
| 35 | Louis Polinocka | 27 | Lodger | Shipper | Massachusetts |
| 36 | Americo De Luca | 43 | Head | Barber | Massachusetts |
| 37 | Eleanor De Luca | 40 | Wife | — | Italy |
| 38 | Bernzam De Luca | 18 | Son | Last Puller | Massachusetts |
| 39 | Tony De Luca | 15 | Son | — | Massachusetts |
| 40 | Nicholas De Luca | 13 | 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)