RC
Ralph Clark — 1940 US Census Record
Model Tree available1940 United States Federal Census · Westchester-County, New York
Our Model Tree links this Ralph Clark across the 1920, 1930 and 1940 US Censuses in Westchester-County, New York (XGBoost, ~Confirmed), with identified parents Ralph & Ralph — first a son (b.~1917), then head of a 4-person household.
Age 23
b. ~1917
Male
Son
Born: Canada
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Westchester-County, New York |
| Surname | Clark |
| Given Name | Ralph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Canada |
| 1935 Residence (City) | Mt. Vernon |
| 1935 Residence (County) | Westchester |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Tunnel Man |
| Industry | Aqueduct |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 700 |
| Highest Grade | C 2 |
| 1935 Residence | N.Y. |
| Birth Country | Canada |
| Birthplace (normalized) | canada |
| Occupation | Tunnel Man |
| Township / Ward | Goldens Bridge |
| Est. Birth Year | ~1917 |
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 1940 census.
| Name | Relation to head | Relative to Ralph | Age | Birth yr |
|---|---|---|---|---|
| Stewart Clark | Son | — | 21 | ~1919 |
| Sarah Clark | Spouse | — | 62 | ~1878 |
| Ralph Clark | Head | — | 53 | ~1887 |
| Ralph Clark | Son | — | 23 | ~1917 |
Census Appearances
1920
Clinton, New …
Son, age 2
Clinton, New York · implied b. ~1918 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Ralph Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Canada |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Birth Country | Canada |
| Birthplace (normalized) | canada |
1930
Westchester, New …
Son, age 12
Westchester, New York · implied b. ~1918 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Ralph Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Canada |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Can Read/Write | Yes |
| Birth Country | Canada |
| Birthplace (normalized) | canada |
1940
Westchester-County, New …
Son, age 23
Westchester-County, New York · implied b. ~1917 — 4 household members
| Surname | Clark |
| Given Name | Ralph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Canada |
| 1935 Residence (City) | Mt. Vernon |
| 1935 Residence (County) | Westchester |
| Naturalization Status | Naturalized |
| Occupation | Tunnel Man |
| Industry | Aqueduct |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 700 |
| Highest Grade | C 2 |
| 1935 Residence | N.Y. |
| Birth Country | Canada |
| Birthplace (normalized) | canada |
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 Ralph Clark across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage. Identified parents: father Ralph Clark (~0.92 confidence) and father Ralph Clark (~0.92 confidence) and father Ralph Clark (~0.92 confidence) and mother Gerda Clark (~0.92 confidence) and mother Sarah Clark (~0.92 confidence) and mother Sarah Clark (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Ralph Clark
b. ~1885
Source father
● Household
· direct · ~0.92
Father
Ralph Clark
b. ~1887
Source father
● Household
· direct · ~0.92
Father
Ralph Clark
b. ~1887
Source father
● Household
· direct · ~0.92
Mother
Gerda Clark
b. ~1889
Source mother
● Household
· direct · ~0.92
Mother
Sarah Clark
b. ~1886
Source mother
● Household
· direct · ~0.92
Mother
Sarah Clark
b. ~1878
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Ralph Clark
Son · 1940 · age 23 · b. ~1917 · New York
★ You are viewing this record
Sibling
Stewart Clark
Sibling · 1940 · age 21
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 — Westchester-County, New York
Open full size
1940 US Federal Census — Westchester-County, New York
Page Contents
37 people indexed on this census page (nara:1940:m-t0627-02804-01015)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ralph Mcaddock | 64 | Head | Broker | Pennsylvania |
| 2 | Susanne Mcaddock | 53 | Wife | Broker | Nebraska |
| 3 | Ralph (Jr) Mcaddock | 29 | Son | Architect | Colorado |
| 4 | Helen (Jr) Mcaddock | 29 | Daughter | Secretary | Washington |
| 5 | William Mcaddock | 24 | Son | Journalist | New York |
| 6 | Robert (Jr) Mcaddock | 18 | Son | — | New York |
| 7 | Charles D. Jennings | 42 | Head | Caretaker | Virginia |
| 8 | Frederick Palmer | 66 | Head | War Correspondent | New York |
| 9 | Helen Palmer | 57 | Wife | — | New York |
| 10 | Henry G. Runkle | 29 | Step-son | Writer | New York |
| 11 | John Cedermaik | 23 | Servant | Houseman | Sweden |
| 12 | Ralph Clark | 53 | Head | Civil Engr. | New York |
| 13 | Sarah Clark | 62 | Wife | — | New York |
| 14 | Ralph Clark THIS PERSON | 23 | Son | Tunnel Man | Canada |
| 15 | Stewart Clark | 21 | Son | Apprentice | Canada |
| 16 | Walter Young | 34 | Head | Free Lance Artist | New York |
| 17 | Miriam Young | 27 | Wife | — | New York |
| 18 | Peter Young | 5 | Son | — | New York |
| 19 | Nancy Young | 2 | Daughter | — | New York |
| 20 | Philip Sullivan | 36 | Head | Civil Engr. | Connecticut |
| 21 | Margaret Sullivan | 33 | Wife | — | Connecticut |
| 22 | Jessie Zimmerman | 50 | Head | — | Minnesota |
| 23 | Georgina Zimmerman | 45 | Sister | Bookkeeper | Minnesota |
| 24 | Ludwig Nehodyl | 25 | Head | Clerk Grade 3 | New York |
| 25 | Annette Nehodyl | 24 | Wife | — | New York |
| 26 | Virginia Nehodyl | 2 | Daughter | — | New York |
| 27 | John G. Hunter | 45 | Head | Pr. Teacher | Maine |
| 28 | Helen F. Hunter | 41 | Wife | — | England |
| 29 | John G. Jr. Hunter | 12 | Son | — | New York |
| 30 | Norman Hunter | 11 | Son | — | New York |
| 31 | Kenneth Hunter | 6 | Son | — | New York |
| 32 | Baker Valderhauer | 50 | Head | Architect | Germany |
| 33 | Marianne Valderhauer | 34 | Wife | — | Germany |
| 34 | Barbara Valderhauer | 6 | Daughter | — | Germany |
| 38 | Eleanor Woodhall | 80 | Head | — | New York |
| 39 | Clara Preiss | 75 | Sister | — | New York |
| 40 | Edwin Corlett | 52 | Head | Inspector Engineering | Georgia |
Pedigree Summary
Ralph + 1 sibling
Gen 1 · 6 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)