JL
John Lunn — 1930 US Census Record
Linked across censuses1930 United States Federal Census · San Francisco, California
Our Model Tree links this John Lunn across the 1930 and 1940 US Censuses in San Francisco, California (XGBoost, ~Confirmed) — first a son (b.~1921), then head of a 5-person household.
Age 9
b. ~1921
Male
Son
Born: California
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | San Francisco, California |
| Surname | Lunn |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Township / Ward | San Francisco |
| Est. Birth Year | ~1921 |
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.
5 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Lunn | Son | — | 9 | ~1921 |
| Mary Lunn | Daughter | — | 5 | ~1925 |
| Tom Lunn | Son | — | 14 | ~1916 |
| M Lunn | Head | — | 42 | ~1888 |
| Mary Lunn | Spouse | — | 41 | ~1889 |
Census Appearances
1930
San Francisco, …
Son, age 9
San Francisco, California · implied b. ~1921 — 5 household members
| Surname | Lunn |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | Ireland |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
San-Francisco-County, California
Other, age 20
San-Francisco-County, California · implied b. ~1920 — 25 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lum |
| Given Name | John |
| Relationship to Head | lodger |
| Sex | M |
| Color / Race | Chinese |
| Age | 20 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | San Jose |
| 1935 Residence (County) | Santa Clara |
| Occupation | house man |
| Industry | hotel |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 920 |
| Highest Grade | H-4 |
| 1935 Residence | California |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
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 John Lunn across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Lunn
Son · 1930 · age 9 · b. ~1921 · California
★ You are viewing this record
Sibling
Mary Lunn
Sibling · 1930 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Tom Lunn
Sibling · 1930 · age 14
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
1930 US Federal Census — San Francisco, California
Open full size
1930 US Federal Census — San Francisco, California
Page Contents
46 people indexed on this census page (ia:1930:californiacensus00reel197:0693)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | George W. Provitt | 55 | Head | Fireman | California |
| 2 | Anna Provitt | 45 | Wife | Housewife | California |
| 3 | Juanita Provitt | 15 | Daughter | — | California |
| 4 | Louis A. Henry | 45 | Head | Watchman | California |
| 5 | Josephine Henry | 41 | Wife | Housewife | California |
| 6 | Amelia Henry | 19 | Daughter | Typist | California |
| 7 | James Dan Henry | 4 | Son | — | California |
| 8 | Kate Limford | 68 | Head | Housewife | Ireland |
| 9 | William Limford | 34 | Son | Lead | California |
| 10 | Alfred Limford | 31 | Son | Clerk | California |
| 11 | John Limford | 35 | Son | Shipping Clerk | California |
| 12 | Edward Limford | 33 | Son | Clerk | California |
| 13 | Frances Madson | 48 | Head | Housewife | New York |
| 17 | Thomas Hansen | 38 | Head | Lineman | California |
| 18 | Lucille Hansen | 36 | Wife | Housewife | Oregon |
| 19 | Donald Hansen | 5 | Son | — | California |
| 20 | Walter Hunt | 53 | Head | Machinist | California |
| 21 | Annie Hunt | 51 | Wife | Housewife | California |
| 22 | Herman Hunt | 15 | Son | Delivery Boy | California |
| 23 | Wm. P. Jordan | 59 | Head | Conductor | England |
| 24 | Jordan | 57 | Wife | Housewife | Pennsylvania |
| 25 | Janet Jordan | 25 | Daughter | — | California |
| 26 | Jordan | 23 | Daughter | — | California |
| 27 | Jordan | 21 | Daughter | — | California |
| 28 | Ed. A. Bandhorst | 52 | Head | Glass W. | New York |
| 29 | Agnes M. Bandhorst | 51 | Wife | Housewife | New Hampshire |
| 30 | Margaret Omsley | 78 | Mother-in-law | Retired | Scotland |
| 31 | Herbert E. Wood | 80 | Head | Retired | Pennsylvania |
| 32 | Katherine Wood | 56 | Daughter | Homemaker | California |
| 33 | Richard Mcnally | 58 | Head | Laborer | Ireland |
| 34 | Mary Mcnally | 58 | Wife | Housewife | Ireland |
| 35 | Jane Mcnally | 23 | Daughter | Steno | California |
| 36 | Fred Stephens | 44 | Head | Painter | California |
| 37 | Eunice Stephens | 33 | Wife | Clerk | Italy |
| 38 | Stephens | 15 | Daughter | Student | California |
| 39 | Elaine Stephens | 10 | Daughter | — | California |
| 40 | Eddie Stephens | 6 | Son | — | California |
| 41 | Stephens | None | — | — | — |
| 42 | M. J. Lunn | 42 | Head | Captain | California |
| 43 | Mary Lunn | 41 | Wife | Housewife | Ireland |
| 44 | Tom Lunn | 14 | Son | — | California |
| 45 | John Lunn THIS PERSON | 9 | Son | — | California |
| 46 | Mary Lunn | 5 | Daughter | — | California |
| 47 | John C. Costello | 64 | Head | Heater | Ireland |
| 48 | Margaret A. Costello | 55 | Wife | Housewife | Ireland |
| 49 | John P. Costello | 23 | Son | — | California |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)