WD
William Dunlap — 1940 US Census Record
Model Tree available1940 United States Federal Census · Union-County, New Jersey
Our Model Tree links this William Dunlap across the 1910, 1920, 1930 and 1940 US Censuses in Union-County, New Jersey (XGBoost, ~Confirmed), with identified parents James & Isabella — first a son (b.~1906), then head of a 5-person household.
Age 34
b. ~1906
Male
Son
Born: Scotland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Union-County, New Jersey |
| Surname | Dunlap |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Single |
| Birthplace | Scotland |
| 1935 Residence (City) | Elizabeth |
| 1935 Residence (County) | Union |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | pipe fitter |
| Industry | soap co. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 2000 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
| Occupation | Pipe Fitter |
| Township / Ward | Elizabeth |
| Est. Birth Year | ~1906 |
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 William | Age | Birth yr |
|---|---|---|---|---|
| Isabella Dunlap | Spouse | — | 61 | ~1879 |
| Isabella Dunlap | Daughter | — | 32 | ~1908 |
| James Dunlap | Head | — | 60 | ~1880 |
| William Dunlap | Son | — | 34 | ~1906 |
| Hugh Dunlap | Son | — | 24 | ~1916 |
Census Appearances
1910
Union, New …
Son, age 4
Union, New Jersey · implied b. ~1906 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dunlap |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Scotland |
| Children Born | 1904 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Speaks English | English |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1920
Union, New …
Son, age 13
Union, New Jersey · implied b. ~1907 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dunlop |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Scotland |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Scotch |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1930
Union, New …
Son, age 24
Union, New Jersey · implied b. ~1906 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dunlop |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Scotland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1910 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Plumber |
| Industry | Contractor |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Scotch |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1940
Union-County, New …
Son, age 34
Union-County, New Jersey · implied b. ~1906 — 5 household members
| Surname | Dunlap |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Single |
| Birthplace | Scotland |
| 1935 Residence (City) | Elizabeth |
| 1935 Residence (County) | Union |
| Naturalization Status | Naturalized |
| Occupation | pipe fitter |
| Industry | soap co. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 2000 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
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 Dunlap across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father James Dunlop (~0.92 confidence) and mother Isabella Dunlop (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Dunlop
b. ~1878
Source father
● Household
· direct · ~0.92
Mother
Isabella Dunlop
b. ~1879
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Dunlap
Son · 1940 · age 34 · b. ~1906 · New Jersey
★ You are viewing this record
Sibling
Isabella Dunlap
Sibling · 1940 · age 32
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Hugh Dunlap
Sibling · 1940 · age 24
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 — Union-County, New Jersey
Open full size
1940 US Federal Census — Union-County, New Jersey
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-02399-00614)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Albert Baumann | 60 | Head | No | New York |
| 42 | Jeanette Baumann | 58 | Wife | No | New York |
| 43 | Frederick Baumann | 27 | Son | Engineer | New Jersey |
| 44 | William R. Bruce | 53 | Head | Sales Engineer | England |
| 45 | Genevieve Bruce | 53 | Wife | No | Ohio |
| 46 | Churchill Bruce | 28 | Son | Casualty Examiner | Ohio |
| 47 | Fred C. Vickers | 59 | Head | Designer | New York |
| 48 | Adelaide Vickers | 59 | Wife | No | Illinois |
| 49 | Frank J. Hagedorn | 49 | Head | Executive | New York |
| 50 | Frank Hagedorn | 84 | Father | No | New York |
| 51 | Fanny Hagedorn | 70 | Mother | No | New York |
| 52 | Helen (G) Hagedorn | 18 | Daughter | No | Pennsylvania |
| 53 | Richard J. Hagedorn | 16 | Son | No | Pennsylvania |
| 54 | Walter Colwell | 44 | Head | Clerk | New York |
| 55 | Ruth Colwell | 36 | Wife | No | New Jersey |
| 56 | James Colwell | 13 | Son | — | New Jersey |
| 57 | Elizabeth Colwell | 8 | Daughter | — | New Jersey |
| 58 | Ruth A. Colwell | 4 | Daughter | — | New Jersey |
| 59 | Carol S. Colwell | 2 | Daughter | — | New Jersey |
| 60 | Elizabeth Mayer | 62 | Mother-in-law | No | New York |
| 61 | W. Forbes Mcmanus | 55 | Head | Priest | New Jersey |
| 62 | John F. (Jr) Mcmanus | 30 | Priest | Priest | New Jersey |
| 63 | Gertrude Mcmanus | 35 | Housekeeper | Housekeeper | New Jersey |
| 64 | Theodore Bishop | 43 | Head | Silk Expert | New York |
| 65 | Genevieve Bishop | 40 | Wife | No | New Jersey |
| 66 | Joan M. Bishop | 13 | Daughter | — | New Jersey |
| 67 | Paul T. Bishop | 10 | Son | — | New Jersey |
| 68 | Frank Alfred Dee | 71 | Father-in-law | No | Canada |
| 69 | James Dunlap | 60 | Head | Agent Compression | Scotland |
| 70 | Isabella Dunlap | 61 | Wife | No | Scotland |
| 71 | William Dunlap THIS PERSON | 34 | Son | Pipe Fitter | Scotland |
| 72 | Isabella Dunlap | 32 | Daughter | Secretary | Scotland |
| 73 | Hugh Dunlap | 24 | Son | Clerk | New Jersey |
| 74 | John T. Martin | 37 | Head | Civil Engineer | Maryland |
| 75 | Mary Martin | 35 | Wife | No | Maryland |
| 76 | Mary Martin | 10 | Daughter | — | Pennsylvania |
| 77 | Julia Martin | 7 | Daughter | — | Pennsylvania |
| 78 | Milton Tallard | 34 | Head | Executive | New Jersey |
| 79 | Ruth Tallard | 35 | Wife | No | New Jersey |
Related Census Records
Pedigree Summary
William + 2 siblings
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)