JC
John Carroll — 1920 US Census Record
Model Tree available1920 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this John Carroll across the 1900, 1910 and 1920 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed), with identified parents Patrick & Ellen — first a son (b.~1899), then head of a 4-person household.
Age 21
b. ~1899
Male
Son
Born: Massachusetts
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Middlesex, Massachusetts |
| Surname | Carroll |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Occupation | Stenographer |
| Industry | Electric Apparatus |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Stenographer |
| Township / Ward | Malden City |
| Est. Birth Year | ~1899 |
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.
4 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Mary Carroll | Daughter | — | 20 | ~1900 |
| Patrick Carroll | Head | — | 55 | ~1865 |
| John Carroll | Son | — | 21 | ~1899 |
| Anna Carroll | Spouse | — | 53 | ~1867 |
Census Appearances
1900
Middlesex, Massachusetts
Son, age 1
Middlesex, Massachusetts · implied b. ~1899 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carroll |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Birth Month | Dec |
| Birth Year | 1899 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1910
Middlesex, Massachusetts
Son, age 10
Middlesex, Massachusetts · implied b. ~1900 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carroll |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | none |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1920
Middlesex, Massachusetts
Son, age 21
Middlesex, Massachusetts · implied b. ~1899 — 4 household members
| Surname | Carroll |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Stenographer |
| Industry | Electric Apparatus |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| 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 Carroll across 3 US Census years (1900, 1910 and 1920) in Middlesex, Massachusetts, using XGBoost record linkage. Identified parents: father Patrick Carroll (~0.92 confidence) and mother Ellen Carroll (~0.92 confidence) and mother Catherine Carroll (~0.92 confidence) and mother Anna Carroll (~0.92 confidence) and father Patrick Carroll (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Patrick Carroll
b. ~1864
Source father
● Household
· direct · ~0.92
Mother
Ellen Carroll
b. ~1864
Source mother
● Household
· direct · ~0.92
Mother
Catherine Carroll
b. ~1865
Source mother
● Household
· direct · ~0.92
Mother
Anna Carroll
b. ~1867
Source mother
● Household
· direct · ~0.92
Father
Patrick Carroll
b. ~1870
Source father
● Household
· direct · ~0.92
This person
Anchor record
John Carroll
Son · 1920 · age 21 · b. ~1899 · Massachusetts
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Sibling
Mary Carroll
Sibling · 1920 · age 20
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
1920 US Federal Census — Middlesex, Massachusetts
Open full size
1920 US Federal Census — Middlesex, Massachusetts
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu713unit:0158)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | William Brandon | 32 | Son | Repairman | Massachusetts |
| 2 | Helen Brandon | 58 | Piece | Dressmaker | Ireland |
| 3 | John Soza | 25 | Head | Cutter | Portugal |
| 4 | Mary Soza | 26 | Wife | Shoemaker | Portugal |
| 5 | Amelia Soza | 49 | Aunt | Shoemaker | Portugal |
| 6 | Joseph Abram | 35 | Cousin | Packer | Portugal |
| 7 | John Ramos | 30 | Boarder | Packer | Portugal |
| 8 | Patrick Fitzgerald | 25 | Head | Butter Maker | Ireland |
| 9 | Minnie Fitzgerald | 25 | Wife | — | Ireland |
| 10 | Mary Murphy | 34 | Head | — | Ireland |
| 11 | Elizabeth Murphy | 11 | Daughter | — | Massachusetts |
| 12 | Joseph Murphy | 7 | Son | — | Massachusetts |
| 13 | Mary Tremblay | 3 | State Ward | — | Massachusetts |
| 14 | Mary Doucette | 2 | State Ward | — | Massachusetts |
| 15 | Charles Evers | 29 | Head | Glazier | Massachusetts |
| 16 | Ruth Evers | 28 | Wife | — | Massachusetts |
| 17 | Helena M. Evers | 4 | Daughter | — | Massachusetts |
| 18 | Edmund J. Evers | 2 | Son | — | Massachusetts |
| 19 | Patrick Carroll | 55 | Head | Fireman | Ireland |
| 20 | Anna Carroll | 53 | Wife | — | Ireland |
| 21 | John Carroll THIS PERSON | 21 | Son | Stenographer | Massachusetts |
| 22 | Mary Carroll | 20 | Daughter | Stenographer | Massachusetts |
| 23 | Patrick Gelliher | 50 | Head | Laborer | Ireland |
| 24 | Anna Gelliher | 40 | Wife | — | Ireland |
| 25 | Margaret Gelliher | 24 | Daughter | Stenographer | Massachusetts |
| 26 | John Gelliher | 22 | Son | Blacksmith | Massachusetts |
| 27 | Mary Gelliher | 18 | Daughter | Stenographer | Massachusetts |
| 28 | Anna Gelliher | 16 | Daughter | — | Massachusetts |
| 29 | Clement Gelliher | 15 | Son | — | Massachusetts |
| 30 | Andrew Gelliher | 12 | Son | — | Massachusetts |
| 31 | Patrick Gelliher | 10 | Son | — | Massachusetts |
| 32 | Eileen Gelliher | 5 | Son | — | Massachusetts |
| 33 | Michael Sullivan | 48 | Head | Laborer | Ireland |
| 34 | Mary Sullivan | 50 | Wife | Packer | Ireland |
| 35 | Thomas J. Sullivan | 4 | Son | — | Massachusetts |
| 36 | John J. Cronin | 69 | Head | Laborer | Ireland |
| 37 | Catherine Cronin | 63 | Wife | — | Ireland |
| 38 | Katherine Cronin | 33 | Daughter | Machine Operator | Massachusetts |
| 39 | Francis Cronin | 25 | Son | Clerk | Massachusetts |
| 40 | John Cormley | 59 | Head | Repairman | Ireland |
| 41 | Elena Cormley | 50 | Wife | — | England |
| 42 | Frank Cormley | 22 | Son | Office Clerk | Massachusetts |
| 43 | Timothy O'Brien | 48 | Head | Contractor | Massachusetts |
| 44 | Ellen O'Brien | 49 | Wife | — | Ireland |
| 45 | Katherine O'Brien | 25 | Daughter | Secretary | Massachusetts |
| 46 | Helen O'Brien | 23 | Daughter | Teacher | Massachusetts |
| 47 | Elizabeth O'Brien | 21 | Daughter | Stenographer | Massachusetts |
| 48 | Jeremiah O'Brien | 20 | Son | — | Massachusetts |
| 49 | John O'Brien | 17 | Son | Office Clerk | Massachusetts |
| 50 | Nellie Jordan | 65 | Head | — | Ireland |
Related Census Records
Pedigree Summary
John + 1 sibling
Gen 1 · 5 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 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)