JM
James Madden — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this James Madden across the 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a head (b.~1881), then head of a 9-person household.
Age 59
b. ~1881
Male
Head
Born: Maine
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Madden |
| Given Name | James J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 59 |
| Marital Status | Married |
| Birthplace | Maine |
| 1935 Residence (City) | Cambridge |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | Shipper |
| Industry | Valve Co. |
| Class of Worker | PW |
| Hours Worked | 4 |
| Income (1939) | 226 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth State | Maine |
| Birth Country | United States |
| Birthplace (normalized) | maine |
| Occupation | Shipper |
| Township / Ward | Cambridge |
| Est. Birth Year | ~1881 |
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 |
|---|---|---|---|---|
| Robert Madden | Son | — | 16 | ~1924 |
| Helen Madden | Daughter | — | 28 | ~1912 |
| Alice Madden | Spouse | — | 53 | ~1887 |
| James Madden | Son | — | 19 | ~1921 |
| James Madden | Head | — | 59 | ~1881 |
| Alice Madden | Daughter | — | 26 | ~1914 |
| Grace Madden | Daughter | — | 23 | ~1917 |
| Arthur Madden | Son | — | 15 | ~1925 |
| Mary Madden | Daughter | — | 21 | ~1919 |
Census Appearances
1930
Middlesex, Massachusetts
Head, age 48
Middlesex, Massachusetts · implied b. ~1882 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Madden |
| Given Name | James W |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Maine |
| Age at First Marriage | 33 |
| Father's Birthplace | Maine |
| Mother's Birthplace | Irish Free State |
| Occupation | Tool Smith |
| Industry | Tool Shop |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 25.00|35.00 |
| Radio Set | R |
| Birth State | Maine |
| Birth Country | United States |
| Birthplace (normalized) | maine |
1940
Middlesex-County, Massachusetts
Head, age 59
Middlesex-County, Massachusetts · implied b. ~1881 — 9 household members
| Surname | Madden |
| Given Name | James J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 59 |
| Marital Status | Married |
| Birthplace | Maine |
| 1935 Residence (City) | Cambridge |
| 1935 Residence (County) | Middlesex |
| Occupation | Shipper |
| Industry | Valve Co. |
| Class of Worker | PW |
| Hours Worked | 4 |
| Income (1939) | 226 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth State | Maine |
| Birth Country | United States |
| Birthplace (normalized) | maine |
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 Madden across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
James Madden
Head · 1940 · age 59 · b. ~1881 · 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 — 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-t0627-01685-00757)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Nelson Le Blanc | 62 | Head | Painter | Canada English |
| 42 | Annie Le Blanc | 61 | Wife | — | Vermont |
| 43 | Victoria Martel | 69 | Head | — | Vermont |
| 44 | Frank D. Mcgrath | 45 | Head | Chauffeur | Massachusetts |
| 45 | Ellen G. Mcgrath | 42 | Wife | — | Massachusetts |
| 46 | Eileen M. Mcgrath | 19 | Daughter | Clerk | Massachusetts |
| 47 | Daniel J. Hanley | 71 | Father-in-law | Book Binder | Massachusetts |
| 48 | Francis Early | 31 | Brother-in-law | Clerk | Massachusetts |
| 49 | Mary Mahoney | 69 | Head | Dietitian | Maine |
| 50 | Mary E. Mahoney | 42 | Daughter | — | Massachusetts |
| 51 | Catherine Mahoney | 40 | Daughter | Operator | Massachusetts |
| 52 | Michael F. Mahoney | 35 | Son | Book Binder | Massachusetts |
| 53 | Margaret Mahoney | 32 | Daughter | Operator | Massachusetts |
| 54 | Paul Mahoney | 21 | Son | Laborer | Massachusetts |
| 55 | James J. Madden THIS PERSON | 59 | Head | Shipper | Maine |
| 56 | Alice G. Madden | 53 | Wife | — | Massachusetts |
| 57 | Helen J. Madden | 28 | Daughter | Teacher | Massachusetts |
| 58 | Alice B. Madden | 26 | Daughter | Teacher | Massachusetts |
| 59 | Grace V. Madden | 23 | Daughter | Operator | Massachusetts |
| 60 | Mary L. Madden | 21 | Daughter | Salesgirl | Massachusetts |
| 61 | James J. Jr. Madden | 19 | Son | — | Massachusetts |
| 62 | Robert Madden | 16 | Son | — | Massachusetts |
| 63 | Arthur Madden | 15 | Son | — | Massachusetts |
| 64 | James Mrs. Nolan | 78 | Head | — | Eire |
| 65 | Margaret B. Nolan | 48 | Daughter | Secretary | Mass. |
| 66 | Alice G. Nolan | 36 | Daughter | Teacher | Massachusetts |
| 67 | Patrick J. Collins | 71 | Head | — | Eire |
| 68 | Ellen T. Collins | 65 | Wife | — | Massachusetts |
| 69 | Katherine J. Collins | 34 | Daughter | Stenographer | Massachusetts |
| 70 | Helen T. Collins | 32 | Daughter | Office Worker | Massachusetts |
| 71 | Charles J. Collins | 30 | Son | Laborer | Massachusetts |
| 72 | Mary E. Collins | 27 | Daughter | Candy Worker | Massachusetts |
| 73 | Anna V. Collins | 24 | Son | Cashier | Massachusetts |
| 74 | Francis P. Collins | 22 | Son | New Worker | Massachusetts |
| 75 | Ronald Macdonald | 66 | Head | Line Man | Massachusetts |
| 76 | Martha Macdonald | 57 | Wife | — | Massachusetts |
| 77 | Gertrude M. Macdonald | 38 | Daughter | Sales Clerk | Massachusetts |
| 78 | Daniel Brien | 52 | Head | Inspector | Massachusetts |
| 79 | Helen D. Brien | 49 | Wife | — | Illinois |
| 80 | Irene H. Brien | 14 | Daughter | — | 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)