JD
James Dunlap — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this James Dunlap across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1918), then head of a 7-person household.
Age 22
b. ~1918
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Dunlap |
| Given Name | James F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Occupation | General Worker |
| Industry | Railroad Co. |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1040 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | General Worker |
| Township / Ward | Boston |
| Est. Birth Year | ~1918 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Thomas Dunlap | Son | — | 12 | ~1928 |
| John Dunlap | Son | — | 17 | ~1923 |
| Francis Dunlap | Son | — | 14 | ~1926 |
| George Dunlap | Son | — | 7 | ~1933 |
| James Dunlap | Head | — | 43 | ~1897 |
| James Dunlap | Son | — | 22 | ~1918 |
| Bertha Dunlap | Spouse | — | 41 | ~1899 |
Census Appearances
1930
Suffolk, Massachusetts
Son, age 12
Suffolk, Massachusetts · implied b. ~1918 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dunlap |
| Given Name | James F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Son, age 22
Suffolk-County, Massachusetts · implied b. ~1918 — 7 household members
| Surname | Dunlap |
| Given Name | James F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Occupation | General Worker |
| Industry | Railroad Co. |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1040 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| 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 James Dunlap across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Dunlap
Son · 1940 · age 22 · b. ~1918 · Massachusetts
★ You are viewing this record
Sibling
Francis Dunlap
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Dunlap
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Dunlap
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Dunlap
Sibling · 1940 · age 12
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 — Suffolk-County, Massachusetts
Open full size
1940 US Federal Census — Suffolk-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01664-00786)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Rose Sherrick | 56 | Head | — | Lithuania |
| 42 | Joseph Sherrick | 27 | Son | Stripper | Lithuania |
| 43 | John Sherrick | 24 | Son | — | Massachusetts |
| 44 | Albert Sherrick | 18 | Son | — | Massachusetts |
| 45 | Martin Knights | 50 | Lodger | — | Lithuania |
| 46 | William Sweeney | 52 | Head | Painter | Massachusetts |
| 47 | Nora Sweeney | 49 | Wife | — | Massachusetts |
| 48 | Martin Sweeney | 33 | Son | — | Massachusetts |
| 49 | Eleanor Sweeney | 23 | Daughter | — | Massachusetts |
| 50 | Gertrude Sweeney | 21 | Daughter | — | Massachusetts |
| 51 | Helen Sweeney | 19 | Daughter | — | Massachusetts |
| 52 | William Sweeney | 16 | Son | — | Massachusetts |
| 53 | Louise Sweeney | 11 | Daughter | — | Massachusetts |
| 54 | Mary Auwlacki | 25 | Daughter | — | Massachusetts |
| 55 | Annie Cronin | 78 | Mother-in-law | — | Eire |
| 56 | Patrick O'Donnell | 45 | Head | Laborer | Eire |
| 57 | Barbara O'Donnell | 47 | Wife | — | Eire |
| 58 | Coleman O'Donnell | 24 | Son | — | Massachusetts |
| 59 | Bridget M. O'Donnell | 22 | Daughter | Solderer | Massachusetts |
| 60 | Barbara O'Donnell | 18 | Daughter | — | Massachusetts |
| 61 | Patrick O'Donnell | 15 | Son | — | Massachusetts |
| 62 | Catherine O'Donnell | 9 | Daughter | — | Massachusetts |
| 63 | James J. Dunlap | 43 | Head | Clerk | Massachusetts |
| 64 | Bertha Dunlap | 41 | Wife | — | Eire |
| 65 | James F. Dunlap THIS PERSON | 22 | Son | General Worker | Massachusetts |
| 66 | John H. Dunlap | 17 | Son | — | Massachusetts |
| 67 | Francis A. Dunlap | 14 | Son | — | Massachusetts |
| 68 | Thomas E. Dunlap | 12 | Son | — | Massachusetts |
| 69 | George P. Dunlap | 7 | Son | — | Massachusetts |
| 70 | Edward E. Seale | 58 | Head | Mattress Maker | British W. Indies |
| 71 | Mary E. Seale | 38 | Wife | — | Massachusetts |
| 72 | Francis R. Smith | 16 | Son | — | Massachusetts |
| 73 | Arthur E. Seale | 14 | Son | — | Massachusetts |
| 74 | Richard G. Seale | 12 | Son | — | Massachusetts |
| 75 | James Bunch | 32 | Head | — | Massachusetts |
| 76 | Eleanor Bunch | 29 | Wife | — | Massachusetts |
| 77 | James Jr. Bunch | 7 | Son | — | Massachusetts |
| 78 | Phyllis A. Bunch | 1 | Daughter | — | Massachusetts |
| 79 | Mary Slocum | 67 | Lodger | — | Massachusetts |
| 80 | Catherine King | 57 | Head | Cleaner | Eire |
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)