MS
Mary Simpson — 1900 US Census Record
Linked across censuses1900 United States Federal Census · Santa Clara, California
Our Model Tree links this Mary Simpson across the 1900, 1910 and 1920 US Censuses in Santa Clara, California (XGBoost, ~Confirmed) — first a head (b.~1841), then head of a 4-person household.
Age 59
b. ~1841
Female
Head
Born: Ireland
Widowed
1900 Census Record Details
| Census Year | 1900 |
| Location | Santa Clara, California |
| Surname | Simpson |
| Given Name | Mary P |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 58 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Birth Month | Nov |
| Birth Year | 1841 |
| Year of Immigration | 1872 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Township / Ward | San Jose Tp |
| Est. Birth Year | ~1841 |
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 1900 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Gertrude Simpson | Daughter | — | 28 | ~1872 |
| Louise Simpson | Daughter | — | 39 | ~1861 |
| Lottie Simpson | Daughter | — | 27 | ~1873 |
| Mary Simpson | Head | — | 59 | ~1841 |
Census Appearances
1900
Santa Clara, …
Head, age 59
Santa Clara, California · implied b. ~1841 — 4 household members
| Surname | Simpson |
| Given Name | Mary P |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 58 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Birth Month | Nov |
| Birth Year | 1841 |
| Year of Immigration | 1872 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1910
Santa Clara, …
Head, age 68
Santa Clara, California · implied b. ~1842 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Simpson |
| Given Name | Margaret |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 68 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Children Born | 3 |
| Children Living | 3 |
| Year of Immigration | 1853 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
Head, age 76
Santa Clara, California · implied b. ~1844 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Simpson |
| Given Name | Margaret |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 76 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Year of Immigration | 1872 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Irish |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| 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 Simpson across 3 US Census years (1900, 1910 and 1920) in Santa Clara, California, using XGBoost record linkage.
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This person
Anchor record
Mary Simpson
Head · 1900 · age 59 · b. ~1841 · California
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1900 US Federal Census — Santa Clara, California
Open full size
1900 US Federal Census — Santa Clara, California
Page Contents
50 people indexed on this census page (ia:1900:12thcensusofpopu0111unit:0185)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Stephen Holmes | 57 | Head | Lawyer | Maine |
| 52 | Ida C Holmes | 42 | Wife | — | California |
| 53 | Henry H Holmes | 19 | Son | Student At Stanford | California |
| 54 | Sadie M Holmes | 17 | Daughter | Student At Stanford | California |
| 55 | Corinne R Holmes | 14 | Daughter | At School | California |
| 56 | Stuart O Holmes | 12 | Son | At School | California |
| 57 | Lester S Holmes | 8 | Son | At School | California |
| 58 | Mary P Simpson THIS PERSON | 58 | Head | — | Ireland |
| 59 | Louise Simpson | 38 | Daughter | — | California |
| 60 | Gertrude Simpson | 27 | Daughter | — | California |
| 61 | Lottie Simpson | 26 | Daughter | — | California |
| 62 | Martha Hughes | 55 | Head | — | Kentucky |
| 63 | Mary Hughes | 33 | Daughter | Dress Maker | California |
| 64 | Richard Gelatt | 57 | Head | — | Pennsylvania |
| 65 | Amanda Gelatt | 45 | Wife | — | California |
| 66 | Myrtle Gelatt | 22 | Daughter | Elocutionist | Nevada |
| 67 | Iva Gelatt | 20 | Daughter | Student At Stanford | Nevada |
| 68 | Laura J Nuscheler | 62 | Head | — | Germany |
| 69 | Azalia Nuscheler | 26 | Daughter | Teacher | California |
| 70 | Dora L Nuscheler | 25 | Daughter | Teacher | California |
| 71 | Thelma J Nuscheler | 23 | Daughter | Teacher | California |
| 72 | Robert M Craig | 67 | Head | — | Ireland |
| 73 | Emma A Craig | 51 | Wife | — | New York |
| 74 | George F Elliott | 31 | Step Son | R R Fireman | California |
| 75 | Elizabeth Brown | 48 | Boarder | Nurse | California |
| 76 | Delia Christy | 38 | Boarder | Dress Maker | Maine |
| 77 | Edith Mccormick | 38 | Boarder | — | Indiana |
| 78 | Sarah J Carleton | 59 | Head | Lady House Keeper | Sweden |
| 79 | Carl Carleton | 25 | Son | Kindergarten T | California |
| 80 | Hannah Fleming | 48 | Boarder | — | New York |
| 81 | Stella Fleming | 23 | Boarder | Stenographer | California |
| 82 | Clara Fleming | 19 | Boarder | Student At Normal | California |
| 83 | Huldah Borsching | 18 | Boarder | Student At Normal | Sweden |
| 84 | Emily Wigs | 18 | Boarder | Student At Normal | California |
| 85 | Ezra Ellsworth | 64 | Head | — | Maine |
| 86 | Laura E Ellsworth | 30 | Daughter | — | California |
| 87 | Ouida Ellsworth | 27 | Daughter | — | California |
| 88 | Belle Ellsworth | 24 | Daughter | Teacher | California |
| 89 | Henry B Wright | 49 | Head | Physician | Indiana |
| 90 | Elinor B Wright | 47 | Wife | — | Pennsylvania |
| 91 | Ellen R North | 24 | Daughter | — | Kansas |
| 92 | David J North | 19 | Son | At School | Kansas |
| 93 | Sarah North | 15 | Daughter | At School | Kansas |
| 94 | Hannah L Wright | 23 | Daughter | — | Illinois |
| 95 | Horton H Wright | 6 | Son | At School | California |
| 96 | Maude Real | 20 | Servant | — | Colorado |
| 97 | William Waitman | 62 | Head | — | Missouri |
| 98 | Annie M Waitman | 43 | Wife | — | Maine |
| 99 | Fred A Waitman | 19 | Son | Student | California |
| 100 | Milton J Waitman | 13 | Son | Student | California |
Related Census Records
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1900 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)