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Clara Nelson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Clara Nelson across the 1910, 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a spouse (b.~1872), then head of a 6-person household.
Age 68
b. ~1872
Female
Spouse
Born: Sweden
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Nelson |
| Given Name | Clara |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 68 |
| Marital Status | Married |
| Birthplace | Sweden |
| 1935 Residence (City) | McKeesport City |
| 1935 Residence (County) | Allegheny |
| Naturalization Status | Naturalized |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
| Township / Ward | Mckeesport City |
| Est. Birth Year | ~1872 |
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 Clara | Age | Birth yr |
|---|---|---|---|---|
| Clara Nelson | Spouse | — | 68 | ~1872 |
| Ruth Nelson | Daughter | — | 38 | ~1902 |
| Andrew Nelson | Head | — | 70 | ~1870 |
| Lillian Nelson | Daughter | — | 42 | ~1898 |
| Anna Nelson | Daughter | — | 40 | ~1900 |
| Roy Nelson | Son | — | 36 | ~1904 |
Census Appearances
1910
Allegheny, Pennsylvania
Spouse, age 40
Allegheny, Pennsylvania · implied b. ~1870 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Clara A. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Sweden |
| Years Married | 18 |
| Children Born | 4 |
| Children Living | 4 |
| Year of Immigration | 1887 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
1920
Allegheny, Pennsylvania
Spouse, age 49
Allegheny, Pennsylvania · implied b. ~1871 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Clara |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Sweden |
| Year of Immigration | 1880 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Swedish |
| Birth Country | Sweden |
| Year of Naturalization | 1886 |
| Birthplace (normalized) | sweden |
1930
Allegheny, Pennsylvania
Other, age 60
Allegheny, Pennsylvania · implied b. ~1870 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Clara |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 60 |
| Marital Status | Married |
| Birthplace | Sweden |
| Naturalization Status | Naturalized |
| Year of Immigration | 1887 |
| Age at First Marriage | 24 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Can Read/Write | Yes |
| Mother Tongue | Swedish |
| Veteran | No |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
1940
Allegheny-County, Pennsylvania
Spouse, age 68
Allegheny-County, Pennsylvania · implied b. ~1872 — 6 household members
| Surname | Nelson |
| Given Name | Clara |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 68 |
| Marital Status | Married |
| Birthplace | Sweden |
| 1935 Residence (City) | McKeesport City |
| 1935 Residence (County) | Allegheny |
| Naturalization Status | Naturalized |
| Class of Worker | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
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 Clara Nelson across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Clara Nelson
Spouse · 1940 · age 68 · b. ~1872 · Pennsylvania
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Allegheny-County, Pennsylvania
Open full size
1940 US Federal Census — Allegheny-County, Pennsylvania
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-03409-00052)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Franklin Mary Connel | 45 | Daughter | — | Pennsylvania |
| 42 | Blair H. Sampson | 38 | Head | Dentist | Pennsylvania |
| 43 | Irene Sampson | 44 | Wife | — | Pennsylvania |
| 44 | Betty Sampson | 18 | Daughter | — | Pennsylvania |
| 45 | Andrew Nelson | 70 | Head | Inspector Of Mines | Sweden |
| 46 | Clara Nelson THIS PERSON | 68 | Wife | — | Sweden |
| 47 | Lillian Nelson | 42 | Daughter | Teacher English | Pennsylvania |
| 48 | Anna R. Nelson | 40 | Daughter | Teacher English | Pennsylvania |
| 49 | Ruth E. Nelson | 38 | Daughter | — | Pennsylvania |
| 50 | Roy A. Nelson | 36 | Son | Assistant Of Mines | Pennsylvania |
| 51 | Fred Hitchens | 40 | Head | Attorney | Pennsylvania |
| 52 | Margaret Hitchens | 37 | Wife | — | Pennsylvania |
| 53 | Sally Hitchens | 10 | Daughter | — | Pennsylvania |
| 54 | Fred Jr. Hitchens | 2 | Son | — | Pennsylvania |
| 55 | Ralph Blow | 40 | Head | Buyer | Pennsylvania |
| 56 | Alice Blow | 40 | Wife | — | Pennsylvania |
| 57 | Mark Blow | 16 | Son | — | Pennsylvania |
| 58 | Harford Jessie | 20 | Maid | House Maid | Ohio |
| 59 | James L. James | 65 | Head | Chief Clerk Corp | Pennsylvania |
| 60 | Mary D. James | 65 | Wife | — | Pennsylvania |
| 61 | Anthony S. Duff | 48 | Son-in-law | Manager Lynch | Pennsylvania |
| 62 | Sarah P. Duff | 48 | Daughter | — | Pennsylvania |
| 63 | Nancy J. Duff | 13 | Grand Daughter | — | Pennsylvania |
| 64 | Shirley Ann Duff | 3 | Grand Daughter | — | Pennsylvania |
| 65 | Emma Potthoff | 61 | Head | — | Pennsylvania |
| 66 | Helen Potthoff | 34 | Daughter | Teacher Math | Pennsylvania |
| 67 | Conrad Gaverman | 95 | Father | — | Switzerland |
| 69 | Edward Irwin | 45 | Head | Pipe Inspector | Pennsylvania |
| 70 | Margaret Irwin | 42 | Wife | — | Pennsylvania |
| 71 | Jack Irwin | 19 | Son | New Worker | Pennsylvania |
| 72 | Edward Irwin | 10 | Son | — | Pennsylvania |
| 73 | Paul Hoffman | 32 | Head | Truck Driver | Pennsylvania |
| 74 | Mary Hoffman | 29 | Wife | — | Pennsylvania |
| 75 | Elise Mae Hoffman | 9 | Daughter | — | Pennsylvania |
| 76 | Gunnar Benson | 62 | Head | Doubler | Sweden |
| 77 | Lillian Benson | 36 | Wife | Stenographer | Pennsylvania |
| 78 | Marie Glanlett | 72 | Head | — | England |
| 79 | Charles F. Sundstrom | 32 | Son-in-law | Clerk | Pennsylvania |
| 80 | Louise Sundstrom | 34 | Daughter | — | Pennsylvania |
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)