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Mary Ball — 1920 US Census Record
Linked across censuses1920 United States Federal Census · San Francisco, California
Our Model Tree links this Mary Ball across the 1900, 1910 and 1920 US Censuses in San Francisco, California (XGBoost, ~Confirmed) — first a head (b.~1850), then head of a 2-person household.
Age 70
b. ~1850
Female
Head
Born: England
Married
1920 Census Record Details
| Census Year | 1920 |
| Location | San Francisco, California |
| Surname | Ball |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 70 |
| Marital Status | Married |
| Birthplace | England |
| Year of Immigration | 1880 |
| Naturalization Status | Naturalized |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Additional Details | |
| Occupation | Store Keeper |
| Industry | Notions |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Birth Country | England |
| Year of Naturalization | 1886 |
| Birthplace (normalized) | england |
| Occupation | Store Keeper |
| Township / Ward | San Francisco 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.
2 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Agnes Ball | Daughter | — | 40 | ~1880 |
| Mary Ball | Head | — | 70 | ~1850 |
Census Appearances
1900
San Francisco, …
Head, age 54
San Francisco, California · implied b. ~1846 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Ball |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 54 |
| Marital Status | Widowed |
| Birthplace | England |
| Birth Month | Jan |
| Birth Year | 1846 |
| Year of Immigration | 1880 |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | Painter |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth Country | England |
| Birthplace (normalized) | england |
1910
San Francisco, …
Head, age 63
San Francisco, California · implied b. ~1847 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Ball |
| Given Name | Mary A |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 63 |
| Marital Status | Widowed |
| Birthplace | England |
| Children Born | 5 |
| Children Living | 2 |
| Year of Immigration | 1877 |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | Store Keeper |
| Industry | Station Store |
| Birth Country | England |
| Birthplace (normalized) | england |
1920
San Francisco, …
Head, age 70
San Francisco, California · implied b. ~1850 — 2 household members
| Surname | Ball |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 70 |
| Marital Status | Married |
| Birthplace | England |
| Year of Immigration | 1880 |
| Naturalization Status | Naturalized |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | Store Keeper |
| Industry | Notions |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Birth Country | England |
| Year of Naturalization | 1886 |
| Birthplace (normalized) | england |
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 Ball 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
Mary Ball
Head · 1920 · age 70 · b. ~1850 · 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:1920:14thcensusofpopu134unit:0735)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | George Pryal | 28 | Head | Mechanist | California |
| 2 | Ida Pryal | 27 | Wife | — | California |
| 3 | George Pryal | 4 | Son | — | California |
| 4 | Arthur Pryal | 1 | Son | — | California |
| 5 | Marie A. Burns | 62 | Head | — | Missouri |
| 6 | Ludolf B. Burns | 42 | Nephew | Collector | Missouri |
| 7 | Frederick W. Buckhorn | 43 | Boarder | Brass Finisher | New York |
| 8 | George Gruenig | 70 | Head | Retired | Germany |
| 9 | Lena Gruenig | 64 | Wife | — | Germany |
| 10 | Margaret Randolph | 27 | Head | — | California |
| 11 | Hazel E. Randolph | 12 | Daughter | — | California |
| 12 | Audrey Randolph | 7 | Daughter | — | California |
| 13 | James H. Cavanaugh | 41 | Brother-in-law | Candy Maker | California |
| 14 | Harold T. Cavanaugh | 17 | Nephew | — | California |
| 15 | Hans Rasmussen | 42 | Head | Blacksmith | Denmark |
| 16 | Elizabeth Rasmussen | 32 | Wife | — | Norway |
| 17 | Anita E. Rasmussen | 1 | Daughter | — | California |
| 18 | Katherine Delury | 41 | Head | — | Nevada |
| 19 | Daniel E. Delury | 17 | Son | Helper | California |
| 20 | George F. Delury | 14 | Son | — | California |
| 21 | Lena L. Delury | 11 | Daughter | — | California |
| 22 | Katherine E. Delury | 4 | Daughter | — | California |
| 23 | Thomas Ford | 53 | Head | Teamster | Ireland |
| 24 | Margaret Ford | 50 | Wife | — | England |
| 25 | Richard Montoya | 35 | Head | Furnace Tender | California |
| 26 | Sarah A. Montoya | 34 | Wife | — | California |
| 27 | Matthew Wallace | 30 | Head | Sheet Metal Worker | California |
| 28 | Margaret Wallace | 23 | Wife | — | California |
| 29 | Lester Wallace | 20 | Brother | Salesman | California |
| 30 | Mary Ball THIS PERSON | 70 | Head | Store Keeper | England |
| 31 | Agnes B. Ball | 40 | Daughter | — | England |
| 32 | Annie Roach | 40 | Head | Clerk | California |
| 33 | Alfred Roach | 16 | Son | — | California |
| 34 | Gertrude Roach | 14 | Daughter | — | California |
| 35 | Catherine Lanz | 68 | Mother | — | Germany |
| 36 | Irene Splaine | 53 | Head | Floor Lady | California |
| 37 | Nelly Splaine | 28 | Daughter | — | California |
| 38 | William J. Splaine | 22 | Son | Clerk | California |
| 39 | Irma E. Splaine | 16 | Daughter | — | California |
| 40 | Julius W. Dixon | 50 | Head | Rubber Worker | Germany |
| 41 | Mamie Dixon | 50 | Wife | — | California |
| 42 | George F. Dixon | 25 | Son | Rubber Worker | California |
| 43 | Elizabeth Munford | 25 | Daughter-in-law | — | Norway |
| 44 | George F. Munford | 1 | Grandson | — | California |
| 45 | Samuel L. Allen | 39 | Head | Plate Hanger | Maine |
| 46 | Marie R. Allen | 39 | Wife | Dress Maker | Mexico |
| 47 | Hugo Mazoni | 26 | Head | Fruit Store | Italy |
| 48 | Susanna Mazoni | 25 | Wife | Fruit Store | Italy |
| 49 | Michael D. Riordan | 70 | Head | Carpenter | Ireland |
| 50 | John Edstrand | 41 | Head | Marine Engineer | Sweden |
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)