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Joseph Knight — 1940 US Census Record
Linked across censuses1940 United States Federal Census · San-Francisco-County, California
Our Model Tree links this Joseph Knight across the 1930 and 1940 US Censuses in San-Francisco-County, California (XGBoost, ~Confirmed) — first a son (b.~1928), then head of a 6-person household.
Age 12
b. ~1928
Male
Son
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | San-Francisco-County, California |
| Surname | Knight |
| Given Name | Joseph Jr. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | San Francisco |
| 1935 Residence (County) | San Francisco |
| Additional Details | |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Township / Ward | San Francisco |
| Est. Birth Year | ~1928 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Joseph | Age | Birth yr |
|---|---|---|---|---|
| Joseph Knight | Head | — | 39 | ~1901 |
| Mary Knight | Daughter | — | 8 | ~1932 |
| Irene Knight | Daughter | — | 14 | ~1926 |
| Margaret Knight | Spouse | — | 32 | ~1908 |
| Joseph Knight | Son | — | 12 | ~1928 |
| June Knight | Daughter | — | 6 | ~1934 |
Census Appearances
1930
San Francisco, …
Son, age 2
San Francisco, California · implied b. ~1928 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Knight |
| Given Name | Joe |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Montana |
| Can Read/Write | No |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
San-Francisco-County, California
Son, age 12
San-Francisco-County, California · implied b. ~1928 — 6 household members
| Surname | Knight |
| Given Name | Joseph Jr. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | San Francisco |
| 1935 Residence (County) | San Francisco |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| 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 Joseph Knight across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Joseph Knight
Son · 1940 · age 12 · b. ~1928 · California
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Sibling
Mary Knight
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
June Knight
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Irene Knight
Sibling · 1940 · 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
1940 US Federal Census — San-Francisco-County, California
Open full size
1940 US Federal Census — San-Francisco-County, California
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-00300-00946)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Evelyn B Watson | 34 | wife | Librarian | Minnesota |
| 42 | Romuald Collin | 51 | head | Salesman | France |
| 43 | Paul S Roberts | 27 | head | Medical Doctor | California |
| 44 | Charlotte Roberts | 26 | wife | Secretary | Canada |
| 45 | Frank Kovart | 58 | head | Window Cleaner | Hungary |
| 46 | Helen Kovart | 44 | wife | Porter | Hungary |
| 47 | John Padeoff | 32 | head | Painter | California |
| 48 | Anita Padeoff | 30 | wife | — | California |
| 49 | Thomas N. Padeoff | 3 | son | — | California |
| 50 | Nicholas Padeoff | 52 | father | Painter | Russia |
| 51 | Kate Padeoff | 48 | mother | — | Russia |
| 52 | Mother Gangs | 23 | mother | Painter | California |
| 53 | Edward D. Biggins | 57 | head | — | California |
| 54 | Mary Biggins | 56 | wife | — | Free State |
| 55 | Margaret Biggins | 28 | daughter | Owner | California |
| 56 | Catherine Biggins | 21 | daughter | — | California |
| 57 | Francis Biggins | 13 | son | — | California |
| 58 | Theresa Cline | 19 | lodger | Student Nurse | California |
| 59 | Clarence F Gardner | 37 | head | Clerk | California |
| 60 | Mary E Gardner | 60 | mother | — | California |
| 61 | Lillian E. Johnson | 25 | cousin | Clerk | California |
| 62 | Augustus Pratt | 55 | head | Salesman | California |
| 63 | Edith Pratt | 55 | wife | — | California |
| 64 | Edith Pratt | 28 | daughter | Order Dispenser | California |
| 65 | Jewell Pratt | 25 | daughter | Baker | California |
| 66 | Oscar Carlson | 50 | head | Teamster | Sweden |
| 67 | Gertrude Carlson | 39 | wife | — | California |
| 68 | Lois Stevens | 16 | daughter | — | California |
| 69 | Eugene Carlson | 6 | son | — | California |
| 70 | Joseph Knight | 39 | head | Sheet Metal Wkr. | Pennsylvania |
| 71 | Margaret Knight | 32 | wife | — | Montana |
| 72 | Irene Knight | 14 | daughter | — | California |
| 73 | Joseph Jr. Knight THIS PERSON | 12 | son | — | California |
| 74 | Mary Lois Knight | 8 | daughter | — | California |
| 75 | June Knight | 6 | daughter | — | California |
| 76 | William J. Coyne | 75 | head | — | New York |
| 77 | Winifred Coyne | 73 | wife | — | Irish Free State |
| 78 | Anthony Gunseri | 51 | head | Fruit Dealer | Italy |
| 79 | Catherine Gunseri | 45 | wife | — | Italy |
Related Census Records
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 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)