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William Nicholson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Kings-County, New York
Our Model Tree links this William Nicholson across the 1930 and 1940 US Censuses in Kings-County, New York (XGBoost, ~Confirmed) — first a head (b.~1901), then head of a 6-person household.
Age 39
b. ~1901
Male
Head
Born: Irish Free State
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Kings-County, New York |
| Surname | NICHOLSON |
| Given Name | WILLIAM |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Irish Free State |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | Kings |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | LABORER |
| Industry | CONSTRUCTION |
| Class of Worker | PW |
| Hours Worked | 26 |
| Income (1939) | 822 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birthplace (normalized) | irish free state |
| Occupation | Laborer |
| Township / Ward | New York City |
| Est. Birth Year | ~1901 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Francis Nicholson | Son | — | 5 | ~1935 |
| William Nicholson | Son | — | 6 | ~1934 |
| Bridget Nicholson | Spouse | — | 32 | ~1908 |
| Kathleen Nicholson | Daughter | — | 3 | ~1937 |
| William Nicholson | Head | — | 39 | ~1901 |
| Thomas Nicholson | Son | — | 1 | ~1939 |
Census Appearances
1930
Kings, New …
Head, age 28
Kings, New York · implied b. ~1902 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nicholson |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Irish Free State |
| Naturalization Status | First papers filed |
| Year of Immigration | 1925 |
| Age at First Marriage | 21 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Occupation | Laborer |
| Industry | Edison Co. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Home Value / Rent | 35 |
| Veteran | No |
| Birthplace (normalized) | irish free state |
1940
Kings-County, New …
Head, age 39
Kings-County, New York · implied b. ~1901 — 6 household members
| Surname | NICHOLSON |
| Given Name | WILLIAM |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Irish Free State |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | Kings |
| Naturalization Status | Naturalized |
| Occupation | LABORER |
| Industry | CONSTRUCTION |
| Class of Worker | PW |
| Hours Worked | 26 |
| Income (1939) | 822 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birthplace (normalized) | irish free state |
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 Nicholson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
William Nicholson
Head · 1940 · age 39 · b. ~1901 · New York
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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 — Kings-County, New York
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1940 US Federal Census — Kings-County, New York
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02580-00159)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Albert Young | 46 | Head | Chauffeur | Georgia |
| 42 | Virginia Young | 32 | Wife | — | Virginia |
| 43 | David Young | 12 | Son | — | New York |
| 44 | Alice Jones | 37 | SISTER-IN-LAW | Maid | Virginia |
| 45 | Cornelius Jones | 34 | BROTHER-IN-LAW | Clerk | Virginia |
| 46 | George Branch | 54 | Head | Stationary Fireman | British West Indies |
| 47 | Gertrude Branch | 50 | Wife | — | British West Indies |
| 48 | Lionel Branch | 19 | SON | New Worker | New York |
| 49 | Clarine Branch | 17 | Daughter | — | New York |
| 50 | Leon Branch | 16 | Son | — | New York |
| 51 | Robert Carson | 33 | Head | Laborer | South Carolina |
| 52 | Marie Carson | 28 | Wife | — | South Carolina |
| 53 | Robert Jr. Carson | 10 | Son | — | South Carolina |
| 54 | John L. Carson | 9 | Son | — | South Carolina |
| 55 | Leroy Carson | 7 | Son | — | South Carolina |
| 56 | Edward Carson | 5 | Son | — | New York |
| 57 | Dolores Carson | 3 | Daughter | — | New York |
| 58 | Joan Carson | 2 | Daughter | — | New York |
| 59 | Aubrey Gill | 45 | Head | Handyman | British West Indies |
| 60 | Ethel Gill | 45 | Wife | — | British West Indies |
| 61 | Mae Gill | 25 | Daughter | — | British West Indies |
| 62 | Gwendolyn Gill | 16 | Daughter | — | New York |
| 63 | William Nicholson THIS PERSON | 39 | Head | Laborer | Irish Free State |
| 64 | Bridget Nicholson | 32 | Wife | — | Irish Free State |
| 65 | William Jr. Nicholson | 6 | Son | — | New York |
| 66 | Francis Nicholson | 5 | Son | — | New York |
| 67 | Kathleen Nicholson | 3 | Daughter | — | New York |
| 68 | Thomas Nicholson | 1 | Son | — | New York |
| 69 | Bella Morrison | 61 | Head | — | New York |
| 70 | Ulric Mardenborough | 42 | Head | Lighter Captain | DUTCH WEST INDIES |
| 71 | Mary Mardenborough | 41 | Wife | — | New York |
| 72 | Robert Mardenborough | 15 | Son | — | New York |
| 73 | Kathleen Mardenborough | 9 | Daughter | — | New York |
| 74 | William Mardenborough | 8 | Son | — | New York |
| 75 | Ina Mardenborough | 4 | Daughter | — | New York |
| 76 | James Sweeney | 45 | Head | Laborer | Irish Free State |
| 77 | Anna Sweeney | 35 | Wife | — | Scotland |
| 78 | Edward Sweeney | 11 | Son | — | New York |
| 79 | Grace Sweeney | 9 | Daughter | — | New York |
| 80 | Alphonsus Monahan | 38 | Head | Motorman | 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)