MD
Margaret Donnelly — 1920 US Census Record
Linked across censuses1920 United States Federal Census · San Francisco, California
Our Model Tree links this Margaret Donnelly across the 1900, 1910 and 1920 US Censuses in San Francisco, California (XGBoost, ~Confirmed) — first a spouse (b.~1877), then head of a 3-person household.
Age 43
b. ~1877
Female
Spouse
Born: Ireland
Married
1920 Census Record Details
| Census Year | 1920 |
| Location | San Francisco, California |
| Surname | Donnelly |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Ireland |
| Year of Immigration | 1894 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Year of Naturalization | 1900 |
| Birthplace (normalized) | ireland |
| Township / Ward | San Francisco City |
| Est. Birth Year | ~1877 |
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 Margaret | Age | Birth yr |
|---|---|---|---|---|
| Harold Donnelly | Son | — | 19 | ~1901 |
| Margaret Donnelly | Spouse | — | 43 | ~1877 |
| James Donnelly | Head | — | 50 | ~1870 |
Census Appearances
1900
San Francisco, …
Spouse, age 24
San Francisco, California · implied b. ~1876 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Donnelly |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Married |
| Birthplace | Ireland |
| Birth Month | Feb |
| Birth Year | 1876 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1910
San Francisco, …
Spouse, age 34
San Francisco, California · implied b. ~1876 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Donnelly |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Ireland |
| Years Married | 10 |
| Children Born | 4 |
| Children Living | 4 |
| Year of Immigration | 1894 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1920
San Francisco, …
Spouse, age 43
San Francisco, California · implied b. ~1877 — 3 household members
| Surname | Donnelly |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Ireland |
| Year of Immigration | 1894 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Year of Naturalization | 1900 |
| 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 Margaret Donnelly across 3 US Census years (1900, 1910 and 1920) in San Francisco, California, using XGBoost record linkage.
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This person
Anchor record
Margaret Donnelly
Spouse · 1920 · age 43 · b. ~1877 · California
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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 — San Francisco, California
Open full size
1920 US Federal Census — San Francisco, California
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu135unit:1043)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Arthur | 5 | Son | — | California |
| 52 | Edward | 2 | Son | — | California |
| 53 | Morris | 1 | Son | — | California |
| 54 | Manuel Lawson | 35 | Head | Checker | California |
| 55 | Blanche Lawson | 23 | Wife | Mangler | California |
| 56 | Blanche Lawson | 2 | Daughter | — | California |
| 57 | Mary Cordero | 57 | Mother-in-law | — | California |
| 58 | Patrick Duffy | 31 | Head | Stone Cutter | Ireland |
| 59 | Marion Duffy | 28 | Wife | — | England |
| 60 | Marion Duffy | 2 | Son | — | California |
| 61 | Rose E. Duffy | 1 | Daughter | — | California |
| 62 | Rose Amidon | 30 | Sister-in-law | Waitress | England |
| 63 | Henry A. Arndke | 53 | Head | — | Wurttemberg |
| 64 | Louise Arndke | 51 | Wife | — | Wurttemberg |
| 65 | Carl Arndke | 22 | Son | Carpenter | California |
| 66 | Elsa Arndke | 21 | Daughter | Bookkeeper | California |
| 67 | Cornelius Ronin | 52 | Head | Laborer | Ireland |
| 68 | Ellen Ronin | 52 | Wife | — | Ireland |
| 69 | Timothy Ronin | 26 | Son | Laborer | California |
| 70 | Annie Ronin | 25 | Daughter | Stenographer | California |
| 71 | Nathan Lieberman | 40 | Head | Proprietor | Hungary |
| 72 | Bessie Lieberman | 34 | Wife | — | Russia (Poland) |
| 73 | Frances Lieberman | 9 | Daughter | — | California |
| 74 | Sam Lieberman | 5 | Son | — | California |
| 75 | George Phillips | 36 | Head | Winch Driver | Great Britain |
| 76 | Anna Phillips | 27 | Wife | — | Courland |
| 77 | Frank Udell | 42 | Head | Painter | New York |
| 78 | Esther Udell | 40 | Wife | — | California |
| 79 | Charles Leimbacher | 23 | Head | Adjuster | Washington |
| 80 | Mary L. Leimbacher | 23 | Wife | — | Norway |
| 81 | Agda Holmes | 27 | Sister-in-law | Waitress | California |
| 82 | Peter Lauritsen | 45 | Head | Mechanic | Denmark |
| 83 | Mary Lauritsen | 45 | Wife | — | Denmark |
| 84 | Mary Lauritsen | 10 | Daughter | — | California |
| 85 | Charles Graff | 26 | Head | Painter | California |
| 86 | Katherine Graff | 23 | Wife | — | California |
| 87 | William Dieterlein | 48 | Head | Baker | Baden |
| 88 | Wilhelmina Dieterlein | 40 | Wife | — | Rhine Province |
| 89 | William Dieterlein | 14 | Son | — | California |
| 90 | Adeline Dieterlein | 11 | Daughter | — | California |
| 91 | Katherine Dieterlein | 82 | Mother | — | Rhine Province |
| 92 | John Pierson | 55 | Head | Baker | Russia |
| 93 | Barbara Pierson | 53 | Wife | — | Wurttemberg |
| 94 | James Mcnamara | 37 | Head | Electric Welder | Ireland |
| 95 | Mary A. Mcnamara | 31 | Wife | — | Ireland |
| 96 | Mary V. Mcnamara | 5 | Daughter | — | California |
| 97 | Kathleen Mcnamara | 1 | Daughter | — | California |
| 98 | James Donnelly | 50 | Head | Engineer | Ireland |
| 99 | Margaret Donnelly THIS PERSON | 43 | Wife | — | Ireland |
| 100 | Harold Donnelly | 19 | Son | — | California |
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)