JF
James Flanagan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this James Flanagan across the 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1921), then head of a 9-person household.
Age 19
b. ~1921
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Flanagan |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Lowell city |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Highest Grade | No 7 |
| 1935 Residence | Same Place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Lowell City |
| Est. Birth Year | ~1921 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Edward Flanagan | Son | — | 23 | ~1917 |
| Joseph Flanagan | Son | — | 11 | ~1929 |
| James Flanagan | Son | — | 19 | ~1921 |
| Margaret Flanagan | Daughter | — | 6 | ~1934 |
| Martin Flanagan | Son | — | 21 | ~1919 |
| Helen Flanagan | Spouse | — | 41 | ~1899 |
| Francis Flanagan | Son | — | 26 | ~1914 |
| Raymond Flanagan | Son | — | 15 | ~1925 |
| Martin Flanagan | Head | — | 37 | ~1903 |
Census Appearances
1930
Middlesex, Massachusetts
Son, age 9
Middlesex, Massachusetts · implied b. ~1921 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Flanagan |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Canada English |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Son, age 19
Middlesex-County, Massachusetts · implied b. ~1921 — 9 household members
| Surname | Flanagan |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Lowell city |
| 1935 Residence (County) | Middlesex |
| Highest Grade | No 7 |
| 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 Flanagan across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Flanagan
Son · 1940 · age 19 · b. ~1921 · Massachusetts
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Sibling
Francis Flanagan
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Flanagan
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Martin Flanagan
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Flanagan
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Raymond Flanagan
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Flanagan
Sibling · 1940 · age 11
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 — 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-t0627-01692-00068)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Florence Murphy | 50 | mother | Sewer | Massachusetts |
| 42 | John T. Knowles | 46 | Head | Laborer | Massachusetts |
| 43 | Annabelle Knowles | 52 | Sister | — | Canada-English |
| 44 | William Knowles | 36 | Brother | — | Massachusetts |
| 45 | George Flanagan | 24 | Head | Laborer | Massachusetts |
| 46 | Catherine Flanagan | 22 | Wife | Bookbinder | Massachusetts |
| 47 | Thomas Buckley | 40 | Head | Leatherworker | Massachusetts |
| 48 | Hazel Buckley | 37 | Wife | Clerk | Massachusetts |
| 49 | Harold Buckley | 16 | Son | — | Massachusetts |
| 50 | Mary Buckley | 13 | Daughter | — | Massachusetts |
| 51 | Peter Mcdonald | 50 | Head | Machinist | Canada-English |
| 52 | Josephine Mcdonald | 40 | Wife | — | Canada-English |
| 53 | Jessie Mcdonald | 17 | Daughter | — | Massachusetts |
| 54 | George Mcdonald | 16 | Son | — | Massachusetts |
| 55 | Angus Mcdonald | 15 | Son | — | Massachusetts |
| 56 | Albert Mcdonald | 14 | Son | — | Massachusetts |
| 57 | John Mcdonald | 13 | Son | — | Massachusetts |
| 58 | Florence Mcdonald | 11 | Daughter | — | Massachusetts |
| 59 | Patricia Mcdonald | 8 | Daughter | — | Massachusetts |
| 60 | Richard Mcdonald | 5 | Son | — | Massachusetts |
| 61 | Martin Flanagan | 37 | Head | Truck Driver | Massachusetts |
| 62 | Helen Flanagan | 41 | Wife | — | Canada-English |
| 63 | Francis Flanagan | 26 | Son | Lumber Jack | Massachusetts |
| 64 | Edward Flanagan | 23 | Son | Laborer | Massachusetts |
| 65 | Martin Flanagan | 21 | Son | Cooks Helper | Massachusetts |
| 66 | James Flanagan THIS PERSON | 19 | Son | — | Massachusetts |
| 67 | Raymond Flanagan | 15 | Son | — | Massachusetts |
| 68 | Joseph Flanagan | 11 | Son | — | Massachusetts |
| 69 | Margaret Flanagan | 6 | Daughter | — | Massachusetts |
| 70 | Martin Burke | 36 | Head | Weaver | Massachusetts |
| 71 | Mary Burke | 32 | Wife | — | Massachusetts |
| 72 | Joseph Burke | 14 | Daughter | — | Massachusetts |
| 73 | Carl Boches | 48 | Head | Stock Clerk | Massachusetts |
| 74 | Wilda Boches | 32 | Wife | — | Massachusetts |
| 75 | Evelyn Boches | 8 | Daughter | — | Massachusetts |
| 76 | Carol Boches | 6 | Daughter | — | Massachusetts |
| 77 | Joseph Carter | 68 | Head | Laborer | England |
| 78 | Matilda Carter | 64 | Wife | — | Irish Free State |
| 79 | Thomas Carter | 34 | Son | Window Trimmer | Massachusetts |
| 80 | Carol Carter | 30 | Daughter | Store Clerk | 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)