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John Shields — 1940 US Census Record
Model Tree available1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this John Shields across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Irving & Helen — first a son (b.~1917), then head of a 6-person household.
Age 23
b. ~1917
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Shields |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Lowell City |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | Mill Worker |
| Industry | Cotton Mill |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 496 |
| Highest Grade | No 3 |
| 1935 Residence | Same Place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Mill Worker |
| Township / Ward | Lowell City |
| Est. Birth Year | ~1917 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Madalene Shields | Daughter | — | 20 | ~1920 |
| Irving Shields | Head | — | 50 | ~1890 |
| Rita Shields | Daughter | — | 18 | ~1922 |
| Mary Shields | Daughter | — | 22 | ~1918 |
| John Shields | Son | — | 23 | ~1917 |
| Helen Shields | Spouse | — | 49 | ~1891 |
Census Appearances
1920
Middlesex, Massachusetts
Son, age 3
Middlesex, Massachusetts · implied b. ~1917 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Shields |
| Given Name | John J |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Son, age 13
Middlesex, Massachusetts · implied b. ~1917 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Shields |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Son, age 23
Middlesex-County, Massachusetts · implied b. ~1917 — 6 household members
| Surname | Shields |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Lowell City |
| 1935 Residence (County) | Middlesex |
| Occupation | Mill Worker |
| Industry | Cotton Mill |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 496 |
| Highest Grade | No 3 |
| 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 John Shields across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Irving Shields (~0.92 confidence) and mother Helen Shields (~0.92 confidence) and father George Shields (~0.92 confidence) and mother Helen Shields (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Irving Shields
b. ~1890
Source father
● Household
· direct · ~0.92
Mother
Helen Shields
b. ~1892
Source mother
● Household
· direct · ~0.92
Father
George Shields
b. ~1893
Source father
● Household
· direct · ~0.92
Mother
Helen Shields
b. ~1896
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Shields
Son · 1940 · age 23 · b. ~1917 · Massachusetts
★ You are viewing this record
Sibling
Mary Shields
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Madalene Shields
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rita Shields
Sibling · 1940 · age 18
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-t0627-01692-00067)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Samuel Cohen | 55 | Head | Tailor | Russia |
| 2 | Bessie Cohen | 45 | Wife | — | Russia |
| 3 | Elia Cohen | 23 | Son | Bartender | Massachusetts |
| 4 | Maurice Cohen | 18 | Son | News Worker | Massachusetts |
| 5 | Lorraine Cohen | 15 | Daughter | — | Massachusetts |
| 6 | Jake Cohen | 42 | Brother | Tailor | Russia |
| 7 | Charles Kalil | 46 | Head | Barber | Syria |
| 8 | Stella Kalil | 40 | Wife | — | Syria |
| 9 | Maybelle Kalil | 23 | Daughter | Spinner | New Hampshire |
| 10 | Arthur Kalil | 21 | Son | Forester | New Hampshire |
| 11 | Margaret Kalil | 19 | Daughter | Stitcher | New Hampshire |
| 12 | James Kalil | 16 | Son | — | New Hampshire |
| 13 | Phillip Kalil | 13 | Son | — | New Hampshire |
| 14 | Lena Palermo | 40 | Head | Housework | Italy |
| 15 | Laura Palermo | 19 | Daughter | Stitcher | Massachusetts |
| 16 | Rose Palermo | 17 | Daughter | Housework | Massachusetts |
| 17 | Julia Palermo | 16 | Daughter | — | Massachusetts |
| 18 | Fred Palermo | 13 | Son | — | Massachusetts |
| 19 | Michael Palermo | 10 | Son | — | Massachusetts |
| 20 | Laura Gardini | 46 | Head | — | Italy |
| 21 | Angelina Gardini | 15 | Daughter | — | Massachusetts |
| 22 | George Gardini | 11 | Son | — | Massachusetts |
| 23 | John Gardini | 10 | Son | — | Massachusetts |
| 24 | Melio Gardini | 8 | Son | — | Massachusetts |
| 25 | Guy P. Grande | 28 | Head | Drier | Massachusetts |
| 26 | Helen R. Grande | 25 | Wife | — | Massachusetts |
| 27 | Guy P. Jr. Grande | 3 | Son | — | Massachusetts |
| 28 | Robt. A. Grande | 2 | Son | — | Massachusetts |
| 29 | Beverly Grande | 1 | Daughter | — | Massachusetts |
| 30 | James Spinney | 26 | Head | Truck Driver | Massachusetts |
| 31 | Lena Spinney | 17 | Wife | — | Massachusetts |
| 32 | Christine Spinney | 0 | Daughter | — | Massachusetts |
| 33 | Sally Frutero | 24 | Sister in law | — | Massachusetts |
| 34 | Irving P. Shields | 50 | Head | Mill Hand | Massachusetts |
| 35 | Helen E. Shields | 49 | Wife | — | Massachusetts |
| 36 | John Shields THIS PERSON | 23 | Son | Mill Worker | Massachusetts |
| 37 | Mary Shields | 22 | Daughter | Stenographer | Massachusetts |
| 38 | Madalene Shields | 20 | Daughter | Stenographer | Massachusetts |
| 39 | Rita Shields | 18 | Daughter | — | Massachusetts |
| 40 | Hollis Murphy | 19 | Head | Clerk | Massachusetts |
Pedigree Summary
John + 3 siblings
Gen 1 · 4 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)