MD
Mary Donnelly — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Marion, Indiana
Our Model Tree links this Mary Donnelly across the 1910 and 1920 US Censuses in Marion, Indiana (XGBoost, ~Confirmed) — first a daughter (b.~1907), then head of a 10-person household.
Age 13
b. ~1907
Female
Daughter
Born: Indiana
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Marion, Indiana |
| Surname | Donnelly |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Indiana |
| Additional Details | |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Township / Ward | Indianapolis City |
| Est. Birth Year | ~1907 |
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.
10 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Virginia Donnelly | Daughter | — | 19 | ~1901 |
| Celestine Donnelly | Daughter | — | 17 | ~1903 |
| Leilean Donnelly | Daughter | — | 25 | ~1895 |
| Mary Donnelly | Daughter | — | 13 | ~1907 |
| Euphrasia Donnelly | Daughter | — | 14 | ~1906 |
| Maurice Donnelly | Head | — | 42 | ~1878 |
| Crawford Donnelly | Son | — | 6 | ~1914 |
| Joseph Donnelly | Son | — | 15 | ~1905 |
| Maurice Donnelly | Son | — | 21 | ~1899 |
| Sarah Donnelly | Spouse | — | 48 | ~1872 |
Census Appearances
1910
Marion, Indiana
Daughter, age 3
Marion, Indiana · implied b. ~1907 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Donnelly |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Indiana |
| Speaks English | English |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1920
Marion, Indiana
Daughter, age 13
Marion, Indiana · implied b. ~1907 — 10 household members
| Surname | Donnelly |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Indiana |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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 Donnelly across 2 US Census years (1910 and 1920) in Marion, Indiana, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Donnelly
Daughter · 1920 · age 13 · b. ~1907 · Indiana
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Sibling
Leilean Donnelly
Sibling · 1920 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Crawford Donnelly
Sibling · 1920 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Virginia Donnelly
Sibling · 1920 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Celestine Donnelly
Sibling · 1920 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Euphrasia Donnelly
Sibling · 1920 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Maurice Donnelly
Sibling · 1920 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Donnelly
Sibling · 1920 · age 15
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 — Marion, Indiana
Open full size
1920 US Federal Census — Marion, Indiana
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu450unit:1063)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Charles E. Pease | 38 | Head | Dentist | Indiana |
| 2 | Helen L. Pease | 33 | Wife | — | Ohio |
| 3 | Edward S. Pease | 5 | Son | — | Indiana |
| 4 | James A. Pease | 3 | Son | — | Indiana |
| 5 | Laura Phelps | 62 | Mother-in-law | — | Pennsylvania |
| 6 | Maurice Donnelly | 42 | Head | — | Ireland |
| 7 | Sarah Donnelly | 48 | Wife | — | Indiana |
| 8 | Leilean Donnelly | 25 | Daughter | — | Indiana |
| 9 | Maurice Jr. Donnelly | 21 | Son | Agent | Indiana |
| 10 | Virginia Donnelly | 19 | Daughter | — | Indiana |
| 11 | Celestine Donnelly | 17 | Daughter | — | Indiana |
| 12 | Joseph Donnelly | 15 | Son | — | Indiana |
| 13 | Euphrasia Donnelly | 14 | Daughter | — | Indiana |
| 14 | Mary Donnelly THIS PERSON | 13 | Daughter | — | Indiana |
| 15 | Crawford Donnelly | 6 | Son | — | Indiana |
| 16 | John H. Plum | 50 | Head | — | New York |
| 17 | Edith V. Thompson | 31 | Daughter | — | Michigan |
| 18 | William L. Taggart | 32 | Head | Vice President | Indiana |
| 19 | William L. Jr. Taggart | 6 | Son | — | Indiana |
| 20 | Clara Grotte | 19 | Servant | Servant | Indiana |
| 21 | Margaret J. Mckenna | 56 | Head | — | Indiana |
| 22 | Catherine Mckenna | 31 | Daughter | Dressmaker | Indiana |
| 23 | Lavinia A. Mckenna | 50 | Sister | Saleslady | Indiana |
| 24 | Lucius H. Hamilton | 58 | Head | Merchant | Kentucky |
| 25 | Frances Hamilton | 53 | Wife | — | Indiana |
| 26 | Francis H. Hamilton | 28 | Son | Manufacturer | Indiana |
| 27 | Oliver T. Hamilton | 25 | Son | Salesman | Indiana |
| 28 | George H. Christian | 50 | Head | Auditor | Indiana |
| 29 | Clara B. Christian | 47 | Wife | — | Indiana |
| 30 | Edith A. Christian | 18 | Daughter | — | Indiana |
| 31 | Elizabeth Hess | 31 | Head | — | Indiana |
| 32 | Emily Hess | 28 | Sister | — | Indiana |
| 33 | Albert M. Vaught | 55 | Head | Carpenter | Indiana |
| 34 | Belle N. Vaught | 38 | Wife | — | Kentucky |
| 35 | Karl R. Vaught | 32 | Brother | Mechanic | Indiana |
| 36 | Lucile Vaught | 40 | Sister-in-law | — | Kentucky |
| 37 | Edward F. Parry | 47 | Head | — | Pennsylvania |
| 38 | Flora Parry | 42 | Wife | — | Indiana |
| 39 | William Gordon | 33 | Head | Real Estate | Scotland |
| 40 | William Jr. Gordon | 3 | Son | — | Indiana |
| 41 | Annie D. Gordon | 32 | Daughter-in-law | — | Georgia |
| 42 | Susie Bradley | 30 | Servant | Servant | Tennessee |
| 43 | William B. Gordon | 7 | Grandson | — | Indiana |
| 44 | Joseph H. Adams | 66 | Head | Manufacturer | Indiana |
| 45 | Aura C. Adams | 64 | Wife | — | Indiana |
| 46 | Mary Lacy | 53 | Servant | Servant | Kentucky |
| 47 | Clinton W. Lasher | 49 | Head | State Agent | Pennsylvania |
| 48 | Bertha C. Lasher | 49 | Wife | — | Indiana |
| 49 | John G. Lasher | 6 | Son | — | Indiana |
| 50 | Martha Crosier | 65 | Mother-in-law | — | Indiana |
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)