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William Larkin — 1940 US Census Record
Model Tree available1940 United States Federal Census · Chester-County, Pennsylvania
Our Model Tree links this William Larkin across the 1920, 1930 and 1940 US Censuses in Chester-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Casper & Elmer — first a son (b.~1913), then head of a 6-person household.
Age 27
b. ~1913
Male
Son
Born: Pennsylvania
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Chester-County, Pennsylvania |
| Surname | Larkin |
| Given Name | William L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Downingtown Boro |
| 1935 Residence (County) | Chester |
| Additional Details | |
| Occupation | Laborer |
| Industry | Paper Box Co |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 600 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Laborer |
| Township / Ward | Downingtown Boro |
| Est. Birth Year | ~1913 |
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 William | Age | Birth yr |
|---|---|---|---|---|
| Casper Larkin | Head | — | 71 | ~1869 |
| Mary Larkin | Other | — | ~1940 | |
| Raymond Larkin | Son | — | 24 | ~1916 |
| Mary Larkin | Spouse | — | 68 | ~1872 |
| Beatrice Larkin | Other | — | 23 | ~1917 |
| William Larkin | Son | — | 27 | ~1913 |
Census Appearances
1920
Chester, Pennsylvania
Other, age 7
Chester, Pennsylvania · implied b. ~1913 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Larkin |
| Given Name | William E |
| Relationship to Head | grandson |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Chester, Pennsylvania
Son, age 17
Chester, Pennsylvania · implied b. ~1913 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Larkin |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Chester-County, Pennsylvania
Son, age 27
Chester-County, Pennsylvania · implied b. ~1913 — 6 household members
| Surname | Larkin |
| Given Name | William L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Downingtown Boro |
| 1935 Residence (County) | Chester |
| Occupation | Laborer |
| Industry | Paper Box Co |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 600 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 William Larkin across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Casper Larkin (~0.92 confidence) and father Elmer Larkin (~0.92 confidence) and mother Charlotte Larkin (~0.92 confidence) and mother Mary Larkin (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Casper Larkin
b. ~1869
Source father
● Household
· direct · ~0.92
Father
Elmer Larkin
b. ~1870
Source father
● Household
· direct · ~0.92
Mother
Charlotte Larkin
b. ~1872
Source mother
● Household
· direct · ~0.92
Mother
Mary Larkin
b. ~1872
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Larkin
Son · 1940 · age 27 · b. ~1913 · Pennsylvania
★ You are viewing this record
Sibling
Raymond Larkin
Sibling · 1940 · age 24
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 — Chester-County, Pennsylvania
Open full size
1940 US Federal Census — Chester-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03464-00586)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Harry G. Bender | 62 | Head | Paper Maker | Pennsylvania |
| 2 | Lydia G. Bender | 52 | Wife | — | Pennsylvania |
| 3 | Clarence G. Fisher | 35 | Head | Mechanic | Pennsylvania |
| 4 | Mary L. Fisher | 31 | Wife | — | Pennsylvania |
| 5 | Thomas E. Fisher | 3 | Son | — | Pennsylvania |
| 6 | James F. Mcneil | 14 | Nephew | — | Pennsylvania |
| 7 | Joseph D. Moran | 33 | Head | Laborer | Pennsylvania |
| 8 | Margaret E. Moran | 29 | Wife | 72 | Pennsylvania |
| 9 | James J. Moran | 5 | Son | — | Pennsylvania |
| 10 | Emil Grube | 35 | Head | Painter | Germany |
| 11 | Anna E. Grube | 25 | Wife | — | Pennsylvania |
| 12 | Charlotte Anne Grube | 9 | Daughter | — | Pennsylvania |
| 13 | A. Marie Grube | 8 | Daughter | — | Pennsylvania |
| 14 | Margaret J. Grube | 5 | Daughter | — | Pennsylvania |
| 15 | Thomas J. Dougherty | 21 | Brother-in-law | Laborer | Pennsylvania |
| 16 | John H. Leone | 46 | Head | Machinist | Pennsylvania |
| 17 | Mary H. Leone | 51 | Wife | — | Pennsylvania |
| 18 | John H. Jr. Leone | 22 | Son | App. Machinist | Pennsylvania |
| 19 | Grant Leone | 19 | Son | — | Pennsylvania |
| 20 | Anna M. O'Conner | 77 | Head | — | Pennsylvania |
| 21 | Walter M. O'Conner | 42 | Son | Rewinder | Pennsylvania |
| 22 | R. Emerson O'Conner | 40 | Son | Pattern Maker | Pennsylvania |
| 23 | Mabel H. Ingersoll | 52 | Daughter | — | Pennsylvania |
| 24 | Virginia M. Coffman | 20 | Niece | — | Pennsylvania |
| 25 | Fred G. Viler | 36 | Head | Manager | Delaware |
| 26 | Phyllis D. Viler | 30 | Wife | — | Pennsylvania |
| 27 | John D. Viler | 7 | Son | — | Pennsylvania |
| 28 | John Hickey | 64 | Head | Foreman | Pennsylvania |
| 29 | Alice Hickey | 68 | Wife | — | Pennsylvania |
| 30 | Benjamin Sharp | 20 | Boarder | Attendant | Pennsylvania |
| 31 | Casper D. Larkin | 71 | Head | Dentist | Pennsylvania |
| 32 | Mary G. Larkin | 68 | Wife | — | Pennsylvania |
| 33 | Raymond W. Larkin | 24 | Son | Laborer | Pennsylvania |
| 34 | William L. Larkin THIS PERSON | 27 | Son | Laborer | Pennsylvania |
| 35 | Beatrice M. Larkin | 23 | Daughter-in-law | — | Pennsylvania |
| 36 | Mary Lou Larkin | 0 | Grand-Dau | — | Pennsylvania |
| 37 | Harry B. Suter | 48 | Head | Repairman | Pennsylvania |
| 38 | Louise B. Suter | 44 | Wife | — | Pennsylvania |
| 39 | Ida J. Shoemaker | 81 | Aunt | — | Pennsylvania |
| 40 | James P. Eppehimer | 74 | Head | — | Pennsylvania |
Pedigree Summary
William + 1 sibling
Gen 1 · 4 parents
~0.92
Max depth 4 (1900–1950 window)
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)