JD
James Duffy — 1920 US Census Record
Model Tree available1920 United States Federal Census · Mobile, Alabama
Our Model Tree links this James Duffy across the 1900, 1910 and 1920 US Censuses in Mobile, Alabama (XGBoost, ~Confirmed), with identified parents James & Teresa — first a son (b.~1898), then head of a 7-person household.
Age 22
b. ~1898
Male
Son
Born: Alabama
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Mobile, Alabama |
| Surname | Duffy |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Alabama |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Alabama |
| Additional Details | |
| Occupation | Machinist |
| Industry | Ship Yard |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
| Occupation | Machinist |
| Township / Ward | Mobile City |
| Est. Birth Year | ~1898 |
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 1920 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Mary Duffy | Daughter | — | 12 | ~1908 |
| James Duffy | Head | — | 53 | ~1867 |
| James Duffy | Son | — | 22 | ~1898 |
| Dennis Duffy | Son | — | 20 | ~1900 |
| Albert Duffy | Son | — | 17 | ~1903 |
| Vincent Duffy | Son | — | 14 | ~1906 |
| Rebecca Duffy | Spouse | — | 53 | ~1867 |
Census Appearances
1900
Mobile, Alabama
Son, age 3
Mobile, Alabama · implied b. ~1897 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duffey |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Alabama |
| Birth Month | Oct |
| Birth Year | 1897 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Alabama |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
1910
Mobile, Alabama
Son, age 12
Mobile, Alabama · implied b. ~1898 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duffy |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Alabama |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Alabama |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
1920
Mobile, Alabama
Son, age 22
Mobile, Alabama · implied b. ~1898 — 7 household members
| Surname | Duffy |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Alabama |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Alabama |
| Occupation | Machinist |
| Industry | Ship Yard |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
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 Duffy across 3 US Census years (1900, 1910 and 1920) in Mobile, Alabama, using XGBoost record linkage. Identified parents: father James Duffey (~0.92 confidence) and mother Teresa Duffey (~0.92 confidence) and father James Duffy (~0.92 confidence) and mother Rebecca Duffy (~0.92 confidence) and mother Annie Duffy (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Duffey
b. ~1865
Source father
● Household
· direct · ~0.92
Mother
Teresa Duffey
b. ~1866
Source mother
● Household
· direct · ~0.92
Father
James Duffy
b. ~1867
Source father
● Household
· direct · ~0.92
Mother
Rebecca Duffy
b. ~1867
Source mother
● Household
· direct · ~0.92
Mother
Annie Duffy
b. ~1872
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Duffy
Son · 1920 · age 22 · b. ~1898 · Alabama
★ You are viewing this record
Sibling
Dennis Duffy
Sibling · 1920 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Duffy
Sibling · 1920 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Vincent Duffy
Sibling · 1920 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Albert Duffy
Sibling · 1920 · age 17
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 — Mobile, Alabama
Open full size
1920 US Federal Census — Mobile, Alabama
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu035unit:0057)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Samuel Haller | 37 | Head | Courier | Austria |
| 2 | Bessie Haller | 32 | Wife | — | New York |
| 3 | Helen Haller | 11 | Daughter | — | Alabama |
| 4 | Harold Haller | 5 | Son | — | New York |
| 5 | Julius Goldstein | 29 | Head | Merchant | Alabama |
| 6 | Rebecca Goldstein | 29 | Wife | — | New York |
| 7 | Cecil Foreheimer | 7 | Daughter | — | Alabama |
| 8 | Marion Foreheimer | 30 | Son-in-law | Grocer | California |
| 9 | Aaron Jasper | 23 | Servant | Laborer | Louisiana |
| 10 | Timothy E. Morgan | 45 | Head | Master Mech. | Alabama |
| 11 | Teresa Morgan | 41 | Wife | — | Alabama |
| 12 | E. Lillian Morgan | 22 | Daughter | Stenographer | Alabama |
| 13 | Sadie Morgan | 22 | Daughter-in-law | — | Alabama |
| 14 | Mary Collins | 43 | Sister-in-law | Sewing | Alabama |
| 15 | Platon Morgan | 0 | Grand son | — | Alabama |
| 16 | Allan Monroe | 26 | Head | Machinist | Massachusetts |
| 17 | Mattie Monroe | 25 | Wife | — | Massachusetts |
| 18 | Edna Batchelor | 23 | Head | Stenographer | Alabama |
| 19 | Ethel Batchelor | 21 | Sister | Artist | Alabama |
| 20 | John C. Prineat | 44 | Head | Produce | Malta |
| 21 | Gertrude Prineat | 44 | Wife | — | Alabama |
| 22 | Carmella Prineat | 19 | Daughter | — | Alabama |
| 23 | Gertrude Prineat | 17 | Daughter | — | Alabama |
| 24 | Edgar Starling | 27 | Head | Collector | Alabama |
| 25 | Maudie Starling | 25 | Wife | — | Indiana |
| 26 | James C. Duffy | 53 | Head | Cashier | Ireland |
| 27 | Rebecca Duffy | 53 | Wife | — | Alabama |
| 28 | James Duffy THIS PERSON | 22 | Son | Machinist | Alabama |
| 29 | Dennis P. Duffy | 20 | Son | Manifest Clerk | Alabama |
| 30 | Albert Duffy | 17 | Son | Collector | Alabama |
| 31 | Vincent Duffy | 14 | Son | — | Alabama |
| 32 | Mary Duffy | 12 | Daughter | — | Alabama |
| 33 | Thadeus Fearnley | 59 | Head | Driver | Alabama |
| 34 | Mary E. Fearnley | 58 | Wife | — | Alabama |
| 35 | John V. Fearnley | 25 | Son | Clerk | Alabama |
| 36 | Raymond J. Fearnley | 17 | Son | Machinist | Alabama |
| 37 | Robert S. Barry | 30 | Head | Boilermaker | Alabama |
| 38 | Lillian Barry | 29 | Wife | — | Alabama |
| 39 | Charles Lyngayus | 32 | Boarder | Blacksmith | Alabama |
| 40 | James Glass | 47 | Head | Cleaner | Mississippi |
| 41 | Annie Glass | 34 | Wife | — | Georgia |
| 42 | George Rentfrow | 27 | Boarder | Key Cleaner | Georgia |
| 43 | Albert Bedity | 50 | Head | — | Alabama |
| 44 | Albert H. Bedity | 27 | Son | Solicitor | Alabama |
| 45 | Virginia Bedity | 23 | Daughter | — | Alabama |
| 46 | Ruth Bedity | 20 | Daughter | Clerk | Alabama |
| 47 | Meyer E. Metz | 45 | Head | Barber | Alabama |
| 48 | Beulah E. Metz | 34 | Wife | — | Tennessee |
| 49 | John H. Kirkland | 38 | Head | Machinist | Alabama |
| 50 | Lelia Kirkland | 30 | Wife | Nurse | Alabama |
Pedigree Summary
James + 4 siblings
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)