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John Monahan — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Allegheny, Pennsylvania
Our Model Tree links this John Monahan across the 1900, 1910 and 1920 US Censuses in Allegheny, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1848), then head of a 13-person household.
Age 72
b. ~1848
Male
Head
Born: Ireland
Married
1920 Census Record Details
| Census Year | 1920 |
| Location | Allegheny, Pennsylvania |
| Surname | Monahan |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 72 |
| Marital Status | Married |
| Birthplace | Ireland |
| Year of Immigration | 1869 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Occupation | Retired |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Irish |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth Country | Ireland |
| Year of Naturalization | 1877 |
| Birthplace (normalized) | ireland |
| Occupation | Retired |
| Township / Ward | City Of Pittsburgh |
| Est. Birth Year | ~1848 |
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.
13 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Edward Monahan | Son | — | 19 | ~1901 |
| James Monahan | Son | — | 38 | ~1882 |
| John Callahan | Other | — | 35 | ~1885 |
| Charles Conley | Other | — | 31 | ~1889 |
| John Callahan | Other | — | 5 | ~1915 |
| Joseph Monahan | Son | — | 25 | ~1895 |
| Leo Monahan | Son | — | 22 | ~1898 |
| Winifred Conley | Daughter | — | 30 | ~1890 |
| John Monahan | Son | — | 28 | ~1892 |
| Virginia Conley | Other | — | 2 | ~1918 |
| John Monahan | Head | — | 72 | ~1848 |
| Mary Callahan | Daughter | — | 34 | ~1886 |
| Bridget Monahan | Spouse | — | 60 | ~1860 |
Census Appearances
1900
Allegheny, Pennsylvania
Head, age 52
Allegheny, Pennsylvania · implied b. ~1848 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Monahan |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Ireland |
| Birth Month | Aug |
| Birth Year | 1848 |
| Year of Immigration | 1873 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Restaurant Keeper |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1910
Allegheny, Pennsylvania
Head, age 61
Allegheny, Pennsylvania · implied b. ~1849 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Monahan |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 61 |
| Marital Status | Married |
| Birthplace | Ireland |
| Years Married | 29 |
| Year of Immigration | 1870 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Own Income |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1920
Allegheny, Pennsylvania
Head, age 72
Allegheny, Pennsylvania · implied b. ~1848 — 13 household members
| Surname | Monahan |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 72 |
| Marital Status | Married |
| Birthplace | Ireland |
| Year of Immigration | 1869 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Retired |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Irish |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth Country | Ireland |
| Year of Naturalization | 1877 |
| Birthplace (normalized) | ireland |
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 Monahan across 3 US Census years (1900, 1910 and 1920) in Allegheny, Pennsylvania, using XGBoost record linkage.
Show:
This person
Anchor record
John Monahan
Head · 1920 · age 72 · b. ~1848 · Pennsylvania
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1920 US Federal Census — Allegheny, Pennsylvania
Open full size
1920 US Federal Census — Allegheny, Pennsylvania
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu1527unit:0760)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Theodore Kalin | 55 | Head | — | Switzerland |
| 2 | Albert W Kalin | 31 | Head | Machinist | Penna |
| 3 | Ruth F Kalin | 28 | Wife | — | Penna |
| 4 | Benjamin D Kalin | 9 | Son | — | Penna |
| 5 | Charles Smith | 22 | Head | General Engr | Penna |
| 6 | Helen Smith | 21 | Wife | — | Penna |
| 7 | Helen L Smith | 2 | Daughter | — | Penna |
| 8 | Andrew Burke | 65 | Head | Brakeman | Penna |
| 9 | Mary Burke | 52 | Wife | — | Penna |
| 10 | Edward Goodman | 20 | Nephew | Electrician | Penna |
| 11 | John Goodman | 18 | Nephew | Brakeman | Penna |
| 12 | Isaac N Potts | 32 | Head | Conductor | Ireland |
| 13 | Emily Potts | 23 | Wife | — | Penna |
| 14 | Robert J Potts | 1 | Son | — | Penna |
| 15 | George A Mason | 41 | Head | Salesman | Missippi |
| 16 | Ida A Mason | 34 | Wife | — | Penna |
| 17 | Esther A Mason | 12 | Daughter | — | Penna |
| 18 | Richard A Mason | 8 | Son | — | Penna |
| 19 | Arthur H Mason | 4 | Son | — | Penna |
| 20 | John B Mason | 2 | Son | — | Penna |
| 21 | Michael Mchugh | 52 | Head | Flagman | Scotland |
| 22 | Mary J Mchugh | 42 | Wife | — | Penna |
| 23 | Joseph Mchugh | 19 | Son | Clerk | Penna |
| 24 | Edward M Mchugh | 17 | Son | Clerk | Penna |
| 25 | John L Mchugh | 15 | Son | — | Penna |
| 26 | Walter J Mchugh | 13 | Son | — | Penna |
| 27 | Paul L Mchugh | 10 | Son | — | Penna |
| 28 | Louis Bakowsky | 43 | Head | Blacksmith | Austria |
| 29 | Verma Bakowsky | 33 | Wife | — | Austria |
| 30 | Daniel F Bakowsky | 9 | Son | — | Penna |
| 31 | Alma E Bakowsky | 7 | Daughter | — | Penna |
| 32 | Anna Hingston | 69 | Head | — | England |
| 33 | Martha Hingston | 38 | Daughter | — | Penna |
| 34 | Albert J Hingston | 38 | Son-in-law | Butcher | Penna |
| 35 | Bessie Broad | 35 | Niece | Sales Lady | Penna |
| 36 | William Wilson | 40 | Head | — | Penna |
| 37 | Agnes Wilson | 35 | Sister | Sales Lady | Penna |
| 38 | John Monahan THIS PERSON | 72 | Head | Retired | Ireland |
| 39 | Bridget Monahan | 60 | Wife | — | Ireland |
| 40 | James G Monahan | 38 | Son | Laborer | Penna |
| 41 | John J Monahan | 28 | Son | Helper | Penna |
| 42 | Joseph P Monahan | 25 | Son | Clerk | Penna |
| 43 | Leo J Monahan | 22 | Son | Apprentice | Penna |
| 44 | Edward C Monahan | 19 | Son | Clerk | Penna |
| 45 | Winifred Conley | 30 | Daughter | — | Penna |
| 46 | Charles E Conley | 31 | Son-in-law | Foreman | Penna |
| 47 | Virginia Conley | 2 | Granddaughter | — | Penna |
| 48 | Mary H Callahan | 34 | Daughter | — | Penna |
| 49 | John Jos Callahan | 35 | Son-in-law | — | Idaho |
| 50 | John P Callahan | 5 | Grandson | — | Idaho |
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)