MC
Mary Conroy — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Allegheny, Pennsylvania
Our Model Tree links this Mary Conroy across the 1900, 1910 and 1920 US Censuses in Allegheny, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1850), then head of a 4-person household.
Age 70
b. ~1850
Female
Head
Born: Ireland
Widowed
1920 Census Record Details
| Census Year | 1920 |
| Location | Allegheny, Pennsylvania |
| Surname | Conroy |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 70 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Year of Immigration | 1865 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Can Read | Yes |
| Can Write | No |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Township / Ward | Pittsburgh City |
| Est. Birth Year | ~1850 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Conroy | Head | — | 70 | ~1850 |
| William Conroy | Son | — | 27 | ~1893 |
| Florence Conroy | Daughter | — | 35 | ~1885 |
| James Mcelroy | Other | — | 11 | ~1909 |
Census Appearances
1900
Allegheny, Pennsylvania
Head, age 52
Allegheny, Pennsylvania · implied b. ~1848 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Conroy |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Ireland |
| Birth Month | Feb |
| Birth Year | 1848 |
| Year of Immigration | 1865 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1910
Allegheny, Pennsylvania
Head, age 64
Allegheny, Pennsylvania · implied b. ~1846 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Conroy |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 64 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Years Married | 19 |
| Children Born | 5 |
| Children Living | 4 |
| Year of Immigration | 1865 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1920
Allegheny, Pennsylvania
Head, age 70
Allegheny, Pennsylvania · implied b. ~1850 — 4 household members
| Surname | Conroy |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 70 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Year of Immigration | 1865 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | No |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Birth Country | Ireland |
| 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 Mary Conroy across 3 US Census years (1900, 1910 and 1920) in Allegheny, Pennsylvania, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Conroy
Head · 1920 · age 70 · b. ~1850 · 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:1920:14thcensusofpopu1521unit:1112)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Edna Thompson | 14 | Daughter | — | Pennsylvania |
| 2 | Joseph Dittrich | 54 | Head | Machinist | Pennsylvania |
| 3 | Mary Dittrich | 51 | Wife | — | Pennsylvania |
| 4 | William Dittrich | 31 | Son | Upholsterer | Pennsylvania |
| 5 | Mary E Dittrich | 26 | Daughter | Bookkeeper | Pennsylvania |
| 6 | Theodore Dittrich | 20 | Son | Apprentice | Pennsylvania |
| 7 | Joseph Dittrich | 14 | Son | — | Pennsylvania |
| 8 | Catherine Dittrich | 12 | Daughter | — | Pennsylvania |
| 9 | John H Burton | 67 | Head | Insurance Agent | Pennsylvania |
| 10 | Burton | 41 | Wife | — | Pennsylvania |
| 11 | Joseph Lechner | 57 | Head | — | Pennsylvania |
| 12 | Martha Lechner | 56 | Wife | — | New York |
| 13 | James W Lechner | 25 | Son | Retailer | New York |
| 14 | Thomas M Lechner | 24 | Son | Mail Dispatcher | New York |
| 15 | Elizabeth Metz | 72 | Head | — | Germany |
| 16 | John Schlotterbeck | 50 | Head | — | Pennsylvania |
| 17 | Julius W Schlotterbeck | 25 | Grandson | Office Clerk | Pennsylvania |
| 18 | Charles G Schlotterbeck | 21 | Grandson | Office Clerk | Pennsylvania |
| 19 | Alice J Schlotterbeck | 13 | Granddaughter | Office Clerk | Pennsylvania |
| 20 | Arthur Jones | 60 | Head | Mechanic | England |
| 21 | Lucy Jones | 67 | Wife | — | England |
| 22 | Mabel Jones | 21 | Daughter | Office Clerk | Pennsylvania |
| 23 | William Jones | 17 | Son | — | Pennsylvania |
| 24 | Margaret Rickenbach | 53 | Head | — | — |
| 25 | Walter Rickenbach | 23 | Son | — | — |
| 26 | Rickenbach | None | — | German | — |
| 27 | Margaret Kruig | 64 | Head | — | Pennsylvania |
| 28 | Ida Kruig | 34 | Daughter | Receiver | Pennsylvania |
| 29 | Velma J Kruig | 32 | Daughter | Stenographer | Pennsylvania |
| 30 | Robert C Watt | 54 | Head | Street Car Conductor | Pennsylvania |
| 31 | Anna Watt | 55 | Wife | — | Pennsylvania |
| 32 | Charles H Sworp | 41 | Head | Labor | Pennsylvania |
| 33 | Margaret A Sworp | 40 | Wife | — | Pennsylvania |
| 34 | William B Euler | 67 | Head | Labor | Pennsylvania |
| 35 | Julia C Euler | 58 | Wife | — | Indiana |
| 36 | William B Euler | 26 | Daughter | Stenographer | Pennsylvania |
| 37 | Clarence M Harrison | 40 | Head | Express Agent | Maryland |
| 38 | Jennie R Harrison | 34 | Wife | Assistant Cashier | Pennsylvania |
| 39 | John E Donrich | 22 | Roomer | Asst Delivery Clerk | District of Columbia |
| 40 | Alfred White | 31 | Head | Machinist | Pennsylvania |
| 41 | Martha White | 34 | Wife | — | Pennsylvania |
| 42 | Albert M Jr White | 5 | Son | — | Pennsylvania |
| 43 | Esther Whitelaw | 31 | Sister-in-law | Saleslady | Pennsylvania |
| 44 | John Whitelaw | 12 | Nephew | — | Ohio |
| 45 | Mary Conroy THIS PERSON | 70 | Head | — | Ireland |
| 46 | Florence Conroy | 35 | Daughter | Nurse | Pennsylvania |
| 47 | William P Conroy | 27 | Son | Traveling Salesman | Pennsylvania |
| 48 | James P Mcelroy | 11 | Grandson | — | Pennsylvania |
| 49 | William H Miles | 67 | Head | Office Clerk | Maryland |
| 50 | Emma J Miles | 55 | Wife | — | Pennsylvania |
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)