JD
James Duncan — 1910 US Census Record
Linked across censuses1910 United States Federal Census · San Francisco, California
Our Model Tree links this James Duncan across the 1900, 1910 and 1920 US Censuses in San Francisco, California (XGBoost, ~Confirmed) — first a head (b.~1860), then head of a 4-person household.
Age 50
b. ~1860
Male
Head
Born: Scotland
Married
1910 Census Record Details
| Census Year | 1910 |
| Location | San Francisco, California |
| Surname | Duncan |
| Given Name | James H |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Scotland |
| Years Married | 26 |
| Year of Immigration | 1870 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Additional Details | |
| Occupation | Engraver |
| Industry | Jeweler |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
| Occupation | Engraver |
| Township / Ward | San Francisco City Part Of |
| Est. Birth Year | ~1860 |
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 1910 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Nellie Duncan | Daughter | — | 25 | ~1885 |
| Edna Duncan | Daughter | — | 17 | ~1893 |
| James Duncan | Head | — | 50 | ~1860 |
| Ada Duncan | Spouse | — | 51 | ~1859 |
Census Appearances
1900
San Francisco, …
Head, age 40
San Francisco, California · implied b. ~1860 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duncan |
| Given Name | James H |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Scotland |
| Birth Month | Jan |
| Birth Year | 1860 |
| Year of Immigration | 1870 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | General Engraving |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1910
San Francisco, …
Head, age 50
San Francisco, California · implied b. ~1860 — 4 household members
| Surname | Duncan |
| Given Name | James H |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Scotland |
| Years Married | 26 |
| Year of Immigration | 1870 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Engraver |
| Industry | Jeweler |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1920
San Francisco, …
Other, age 59
San Francisco, California · implied b. ~1861 — 50 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duncan |
| Given Name | James H. |
| Relationship to Head | Lodger |
| Sex | M |
| Color / Race | White |
| Age | 59 |
| Marital Status | Widowed |
| Birthplace | Scotland |
| Year of Immigration | 1870 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Engineer |
| Industry | Copper |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Scotland |
| Year of Naturalization | 1880 |
| Birthplace (normalized) | scotland |
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 James Duncan 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
James Duncan
Head · 1910 · age 50 · b. ~1860 · California
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1910 US Federal Census — San Francisco, California
Open full size
1910 US Federal Census — San Francisco, California
Page Contents
50 people indexed on this census page (ia:1910:13thcensus1910po0097unit:1138)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Margaret Sweeney | 67 | Inmate | None | Ireland |
| 2 | Mary F Walsh | 42 | Inmate | Clerk | California |
| 3 | Hannah Jones | 60 | Inmate | Nurse | Australia |
| 4 | Catherine Conners | 75 | Inmate | Own Income | Ireland |
| 5 | Josephine Ott | 85 | Inmate | Own Income | Germany |
| 6 | Agnes E Kirby | 57 | Inmate | Own Income | England |
| 7 | Sarah F Mceaale | 75 | Inmate | Own Income | Ireland |
| 8 | Leah Kenny | 70 | Inmate | None | Ireland |
| 9 | Margaret Tyrrell | 40 | Inmate | Own Income | Ireland |
| 10 | Margaret Mccarthy | 80 | Inmate | Housework | Ireland |
| 11 | Joseph Hirschfeldt | 85 | Inmate | Own Income | Germany |
| 12 | Louis Heidenreich | 62 | Inmate | Own Income | Germany |
| 13 | Charles F Moore | 55 | Inmate | Own Income | New York |
| 14 | Bartholomew Kushner | 87 | Inmate | Own Income | England |
| 15 | John F Waterman | 78 | Inmate | Own Income | England |
| 16 | John Lyons | 80 | Inmate | Own Income | Ireland |
| 17 | Verna Ebertshaeuser | 27 | Servant | Nurse | Holland |
| 18 | Margaret Howard | 38 | Servant | Domestic | California |
| 19 | Martin Schuber | 35 | Servant | Engineer | Germany |
| 20 | Joseph Smashers | 25 | Servant | Coachman | Switzerland |
| 21 | John T Bischofberger | 43 | Servant | Painter | Switzerland |
| 22 | Stephen Kotman | 27 | Servant | Painter | Slovenia |
| 23 | Peter B Drinkatzi | 55 | Servant | Teamster | Switzerland |
| 24 | Ernest E Hovey | 35 | Servant | Nurse | Germany |
| 25 | Walter C Host | 28 | Chap | Physician | California |
| 26 | James H Duncan THIS PERSON | 50 | Head | Engraver | Scotland |
| 27 | Ada M Duncan | 51 | Wife | None | California |
| 28 | Nellie D Duncan | 25 | Daughter | Teacher | California |
| 29 | Edna M Duncan | 17 | Daughter | None | California |
| 30 | Robt D Bichelberger | 46 | Head | Manager | Ohio |
| 31 | Bessie Bichelberger | 46 | Wife | None | Missouri |
| 32 | Robert S Hocking | 18 | Nephew | Teamster | California |
| 33 | Geo G Lippard | 34 | Head | Salesman | New Jersey |
| 34 | Bertha M Lippard | 35 | Wife | None | California |
| 35 | Edna D Lippard | 13 | Daughter | None | California |
| 36 | Francis D Mahoney | 34 | Head | Police Officer | California |
| 37 | Margaret J Mahoney | 32 | Wife | None | California |
| 38 | Raymond Mahoney | 8 | Son | None | California |
| 39 | Joseph F Code | 40 | Head | Letter Carrier | California |
| 40 | Emily H Code | 34 | Wife | None | California |
| 41 | James D Code | 42 | Brother | Clerk | California |
| 42 | Nora Code | 63 | Mother | None | Ireland |
| 43 | Frances G Code | 5 | Daughter | None | California |
| 44 | Ellis J Code | 2 | Son | None | California |
| 45 | Joseph H Tarrant | 36 | Brother-in-law | Carpenter | California |
| 46 | Allison Ware | 30 | Head | Teacher | California |
| 47 | Maud B Ware | 30 | Wife | None | California |
| 48 | Anna E Regan | 76 | Mother-in-law | None | Ireland |
| 49 | Margaret Tibre | 44 | Daughter-in-law | None | California |
| 50 | Allison R Tibre | 15 | Son | None | California |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1910 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)