WM
William Mclaughlin — 1940 US Census Record
Model Tree available1940 United States Federal Census · Ventura-County, California
Our Model Tree links this William Mclaughlin across the 1920, 1930 and 1940 US Censuses in Ventura-County, California (XGBoost, ~Confirmed), with identified parents Anna & Vesta — first a son (b.~1908), then head of a 12-person household.
Age 32
b. ~1908
Male
Son
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Ventura-County, California |
| Surname | McLaughlin |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Judicial Township 1 |
| 1935 Residence (County) | Ventura |
| Additional Details | |
| Occupation | farmer |
| Class of Worker | PW |
| Hours Worked | 54 |
| Income (1939) | 866 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | Farmer |
| Township / Ward | Judicial Township 1 |
| Est. Birth Year | ~1908 |
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.
12 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Frances Mclaughlin | Daughter | — | 36 | ~1904 |
| Elaine Friel | Daughter | — | 7 | ~1933 |
| William Mclaughlin | Son | — | 32 | ~1908 |
| Raymond Mclaughlin | Son | — | 31 | ~1909 |
| Edward Friel | Son | — | 13 | ~1927 |
| Thomas Friel | Son | — | 10 | ~1930 |
| Clara Friel | Spouse | — | 42 | ~1898 |
| Patricia Friel | Daughter | — | 4 | ~1936 |
| Edward Friel | Head | — | 40 | ~1900 |
| Anna Mclaughlin | Daughter | — | 34 | ~1906 |
| Mark Mclaughlin | Son | — | 39 | ~1901 |
| Anna Mclaughlin | Other | — | 63 | ~1877 |
Census Appearances
1920
Ventura, California
Son, age 12
Ventura, California · implied b. ~1908 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McLoughlin |
| Given Name | William J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | Iowa |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1930
Ventura, California
Son, age 23
Ventura, California · implied b. ~1907 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McLaughlin |
| Given Name | William P. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | Iowa |
| Occupation | Farm laborer |
| Industry | Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
Ventura-County, California
Son, age 32
Ventura-County, California · implied b. ~1908 — 12 household members
| Surname | McLaughlin |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Judicial Township 1 |
| 1935 Residence (County) | Ventura |
| Occupation | farmer |
| Class of Worker | PW |
| Hours Worked | 54 |
| Income (1939) | 866 |
| Highest Grade | H 4 |
| 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 William Mclaughlin across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Anna Mclaughlin (~0.92 confidence) and mother Vesta Mcloughlin (~0.92 confidence) and mother Clara Friel (~0.60 confidence) and father Edward Friel (~0.60 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.76
Mother
Anna Mclaughlin
b. ~1876
Source mother
● Household
· direct · ~0.92
Mother
Vesta Mcloughlin
b. ~1879
Source mother
● Household
· direct · ~0.92
Mother
Clara Friel
b. ~1898
Source mother
● Household
· direct · ~0.6
Father
Edward Friel
b. ~1900
Source father
● Household
· direct · ~0.6
This person
Anchor record
William Mclaughlin
Son · 1940 · age 32 · b. ~1908 · California
★ You are viewing this record
Sibling
Mark Mclaughlin
Sibling · 1940 · age 39
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Raymond Mclaughlin
Sibling · 1940 · age 31
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Friel
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frances Mclaughlin
Sibling · 1940 · age 36
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patricia Friel
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Friel
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elaine Friel
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anna Mclaughlin
Sibling · 1940 · age 34
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 — Ventura-County, California
Open full size
1940 US Federal Census — Ventura-County, California
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00363-00611)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Vincent Mclean | 20 | Son | Operator | California |
| 42 | Collie Mccormick | 63 | Head | Asst. Operator | Kentucky |
| 43 | Mattie Mccormick | 58 | Wife | — | Missouri |
| 44 | John Palletta | 67 | Father | — | Italy |
| 45 | Carlo Palletta | 32 | Son | Handyman | California |
| 46 | Walter C. Ward | 45 | Head | Engineer | Kansas |
| 47 | Minnie Ward | 44 | Wife | — | Kansas |
| 48 | Margaret Merrisville | 66 | Mother-in-law | — | Kansas |
| 49 | John Mcclain | 34 | Head | Ranch Helper | Oklahoma |
| 50 | Audrey Mcclain | 35 | Wife | Housekeeper | Arkansas |
| 51 | James Mcclain | 12 | Son | — | Arkansas |
| 52 | Charles Mcclain | 11 | Son | — | Arkansas |
| 53 | Ernest Lennox | 61 | Head | Farmer | Colorado |
| 54 | Elizabeth Lennox | 50 | Wife | — | Minnesota |
| 55 | Ruth Lindsay | 18 | Daughter | — | California |
| 56 | John Lennox | 25 | Son | Farmer | Oregon |
| 57 | Alice Lennox | 36 | Wife | — | Illinois |
| 58 | Anne Lennox | 2 | Daughter | — | Oregon |
| 59 | John Jr. Lennox | 0 | Son | — | New Hampshire |
| 60 | Andrew Refing | 65 | Head | Ranch Helper | Denmark |
| 61 | George Hagen | 20 | Nephew | Ranch Helper | Washington |
| 62 | John Hagen | 18 | Nephew | Ranch Helper | Washington |
| 63 | John J. Menne | 44 | Head | Farmer | California |
| 64 | Mary Menne | 41 | Wife | Farm | California |
| 65 | Marilyn Menne | 15 | Daughter | — | California |
| 66 | Phyllis Menne | 13 | Daughter | — | California |
| 67 | John Jr. Menne | 10 | Son | — | California |
| 68 | David Menne | 6 | Son | — | California |
| 69 | Edward Friel | 40 | Head | Farmer | Pennsylvania |
| 70 | Clara Friel | 42 | Wife | Housewife | California |
| 71 | Edward Friel | 13 | Son | — | California |
| 72 | Thomas Friel | 10 | Son | — | California |
| 73 | Elaine Friel | 7 | Daughter | — | California |
| 74 | Patricia Friel | 4 | Daughter | — | California |
| 75 | Anna M. Mclaughlin | 63 | Mother | Housewife | Iowa |
| 76 | Mark Mclaughlin | 39 | Son | Rancher | California |
| 77 | Frances Mclaughlin | 36 | Daughter | Nurse | California |
| 78 | Anna Mclaughlin | 34 | Daughter | Mother'S Helper | California |
| 79 | William Mclaughlin THIS PERSON | 32 | Son | Farmer | California |
| 80 | Raymond Mclaughlin | 31 | Son | Farmer | California |
Pedigree Summary
William + 8 siblings
Gen 1 · 4 parents
~0.76
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)