JM
John Mahoney — 1920 US Census Record
Model Tree available1920 United States Federal Census · Essex, Massachusetts
Our Model Tree links this John Mahoney across the 1900, 1910 and 1920 US Censuses in Essex, Massachusetts (XGBoost, ~Confirmed), with identified parents Jerry & Annie — first a son (b.~1900), then head of a 3-person household.
Age 20
b. ~1900
Male
Son
Born: Massachusetts
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Essex, Massachusetts |
| Surname | Mahoney |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Occupation | Stenographer |
| Industry | Cotton Mill |
| 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 | City Of Lawrence |
| Est. Birth Year | ~1900 |
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.
3 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Cornelius Mahoney | Head | — | 51 | ~1869 |
| John Mahoney | Son | — | 20 | ~1900 |
| Annie Mahoney | Spouse | — | 44 | ~1876 |
Census Appearances
1900
Essex, Massachusetts
Son, age 2
Essex, Massachusetts · implied b. ~1898 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mahoney |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Birth Month | Oct |
| Birth Year | 1898 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1910
Essex, Massachusetts
Son, age 11
Essex, Massachusetts · implied b. ~1899 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mahony |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1920
Essex, Massachusetts
Son, age 20
Essex, Massachusetts · implied b. ~1900 — 3 household members
| Surname | Mahoney |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Stenographer |
| Industry | Cotton Mill |
| 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 Mahoney across 3 US Census years (1900, 1910 and 1920) in Essex, Massachusetts, using XGBoost record linkage. Identified parents: father Jerry Mahoney (~0.92 confidence) and mother Annie Mahoney (~0.92 confidence) and father Cornelius Mahoney (~0.92 confidence) and mother Annie Mahoney (~0.92 confidence) and father Michael Mahony (~0.92 confidence) and mother Albina Mahony (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Jerry Mahoney
b. ~1851
Source father
● Household
· direct · ~0.92
Mother
Annie Mahoney
b. ~1855
Source mother
● Household
· direct · ~0.92
Father
Cornelius Mahoney
b. ~1869
Source father
● Household
· direct · ~0.92
Mother
Annie Mahoney
b. ~1876
Source mother
● Household
· direct · ~0.92
Father
Michael Mahony
b. ~1876
Source father
● Household
· direct · ~0.92
Mother
Albina Mahony
b. ~1877
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Mahoney
Son · 1920 · age 20 · b. ~1900 · Massachusetts
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1920 US Federal Census — Essex, Massachusetts
Open full size
1920 US Federal Census — Essex, Massachusetts
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu693unit:0295)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | John B. Lesage | 30 | Head | Finisher | Massachusetts |
| 52 | Viola Lesage | 27 | Wife | — | Massachusetts |
| 53 | Robert Murdock | 31 | Head | Weaver | Scotland |
| 54 | Mary Murdock | 26 | Wife | — | Massachusetts |
| 55 | Gottfried Grosswell | 27 | Head | Carpenter | Russia |
| 56 | Utile Grosswell | 26 | Wife | — | Russia |
| 57 | Alfred Grosswell | 2 | Son | — | Massachusetts |
| 58 | Walter Haller | 29 | Head | Compositor | Massachusetts |
| 59 | Stella Haller | 22 | Wife | — | New Hampshire |
| 60 | Emma Petzke | 51 | Head | Spooler | Germany |
| 61 | Martha Petzke | 30 | Daughter | Speaker | Germany |
| 62 | Ruth Petzke | 11 | Daughter | — | Massachusetts |
| 63 | Eugene Brody | 45 | Head | Engineer | Maine |
| 64 | Bessie Brody | 38 | Wife | Housekeeper | Massachusetts |
| 65 | Doris Hunt | 13 | Niece | — | Massachusetts |
| 66 | Andrew Mitchell | 37 | Head | Stationary Fireman | Ireland |
| 67 | Nellie Mitchell | 40 | Wife | — | Ireland |
| 68 | William Mitchell | 8 | Son | — | Massachusetts |
| 69 | John Mitchell | 6 | Son | — | Massachusetts |
| 70 | Bridget Kennedy | 54 | Boarder | — | Ireland |
| 71 | Andrew Troy | 73 | Head | Operative | England |
| 72 | Andrew Troy | 45 | Son | Operative | England |
| 73 | Elizabeth Troy | 36 | Daughter | Operative | England |
| 74 | Katherine Troy | 34 | Daughter | Operative | England |
| 75 | Susan Casey | 56 | Head | — | Ireland |
| 76 | Irene Casey | 30 | Daughter | Cops-Winder | Massachusetts |
| 77 | Emma Casey | 28 | Daughter | School Teacher | Massachusetts |
| 78 | Florence Casey | 24 | Daughter | Mender | Massachusetts |
| 79 | Christina Casey | 21 | Daughter | Burler | Massachusetts |
| 80 | Rita Casey | 19 | Daughter | Burler | Massachusetts |
| 81 | John Kane | 42 | Head | Watchman | Ireland |
| 82 | Mary Kane | 37 | Wife | — | Ireland |
| 83 | Mary Kane | 18 | Daughter | Operative | Massachusetts |
| 84 | John J. Kane | 16 | Son | Operative | Massachusetts |
| 85 | Thomas Kane | 12 | Son | — | Massachusetts |
| 86 | Frances Kane | 10 | Daughter | — | Massachusetts |
| 87 | John Lynch | 36 | Head | Machinist | At Sea |
| 88 | Nellie Lynch | 35 | Wife | Weaver | Ireland |
| 89 | Elizabeth Brown | 68 | Boarder | Housekeeper | Maine |
| 90 | Fred Lacillade | 60 | Boarder | Machinist | New Hampshire |
| 91 | Annie Flynn | 46 | Head | — | England |
| 92 | William Flynn | 24 | Son | Electrician | Massachusetts |
| 93 | Frances Flynn | 22 | Daughter | Clerk | Massachusetts |
| 94 | Genevieve Flynn | 18 | Daughter | Examiner | Massachusetts |
| 95 | Rita Flynn | 16 | Daughter | Mender | Massachusetts |
| 96 | Clarence Trumbull | 26 | Son-in-law | Butcher | Massachusetts |
| 97 | Florence Trumbull | 26 | Daughter | Mender | Massachusetts |
| 98 | Cornelius Mahoney | 51 | Head | Iron Worker | Ireland |
| 99 | Annie Mahoney | 44 | Wife | — | Ireland |
| 100 | John Mahoney THIS PERSON | 20 | Son | Stenographer | Massachusetts |
Pedigree Summary
John
Gen 1 · 6 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)