MO
Mary Olsen — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Hudson-County, New Jersey
Our Model Tree links this Mary Olsen across the 1930 and 1940 US Censuses in Hudson-County, New Jersey (XGBoost, ~Confirmed) — first a daughter (b.~1928), then head of a 6-person household.
Age 12
b. ~1928
Female
Daughter
Born: New Jersey
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Hudson-County, New Jersey |
| Surname | Olsen |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | City of Bayonne |
| 1935 Residence (County) | Hudson |
| Additional Details | |
| Highest Grade | No 7 |
| 1935 Residence | Same House |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Township / Ward | City Of Bayonne |
| 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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Olsen | Daughter | — | 12 | ~1928 |
| Betty Olsen | Daughter | — | 8 | ~1932 |
| Anna Olsen | Daughter | — | 17 | ~1923 |
| Owen Olsen | Head | — | 49 | ~1891 |
| Catherine Olsen | Daughter | — | 14 | ~1926 |
| Catherine Olsen | Spouse | — | 38 | ~1902 |
Census Appearances
1930
Hudson, New …
Daughter, age 1
Hudson, New Jersey · implied b. ~1929 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Olsen |
| Given Name | Marie |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Irish Free State |
| Occupation | none |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Hudson-County, New …
Daughter, age 12
Hudson-County, New Jersey · implied b. ~1928 — 6 household members
| Surname | Olsen |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | City of Bayonne |
| 1935 Residence (County) | Hudson |
| Highest Grade | No 7 |
| 1935 Residence | Same House |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
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 Mary Olsen across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Olsen
Daughter · 1940 · age 12 · b. ~1928 · New Jersey
★ You are viewing this record
Sibling
Anna Olsen
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Olsen
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Betty Olsen
Sibling · 1940 · age 8
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 — Hudson-County, New Jersey
Open full size
1940 US Federal Census — Hudson-County, New Jersey
Page Contents
38 people indexed on this census page (nara:1940:m-t0627-02346-00250)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Elbert Skuloneski | 16 | Son | — | New Jersey |
| 42 | Clinton Vernon | 37 | Head | Mechanical Engineer | New York |
| 43 | Dorothy Vernon | 33 | Wife | Teacher | Florida |
| 44 | Elizabeth Vernon | 10 | Daughter | — | New Jersey |
| 45 | Sarah Dunn | 61 | Servant | Servant | New Jersey |
| 46 | Irving Posnak | 39 | Head | Proprietor | Russia |
| 47 | Lillian Posnak | 29 | Wife | — | New York |
| 48 | Barbara Posnak | 2 | Daughter | — | New Jersey |
| 49 | Mary Beluska | 17 | Servant | Servant | Czechoslovakia |
| 51 | Owen Olsen | 49 | Head | Policeman | New Jersey |
| 52 | Catherine Olsen | 38 | Wife | — | New Jersey |
| 53 | Anna Olsen | 17 | Daughter | — | New Jersey |
| 54 | Catherine Olsen | 14 | Daughter | — | New Jersey |
| 55 | Mary Olsen THIS PERSON | 12 | Daughter | — | New Jersey |
| 56 | Betty Olsen | 8 | Daughter | — | New Jersey |
| 57 | Nathaniel La Lune | 40 | Head | Supervisor | New Jersey |
| 58 | Loretta La Lune | 37 | Wife | Teacher | California |
| 59 | Bridget Boyle | 67 | Mother-in-law | Laborer | California |
| 60 | Frank Boyle | 35 | Brother-in-law | Laborer | California |
| 61 | Edward Tonge | 19 | Lodger | New Worker | New Jersey |
| 62 | Margaret Olsen | 60 | Head | — | New York |
| 63 | Roy Olsen | 36 | Son | Secretary | New York |
| 64 | Eugene Nugent | 36 | Lodger | Accountant | New Jersey |
| 65 | George Nugent | 74 | Lodger | Watchman | Irish Free State |
| 66 | Frank Ehniger | 47 | Head | Safety Man | New Jersey |
| 67 | Pearl Ehniger | 47 | Wife | — | New Jersey |
| 68 | Frank Ehniger | 25 | Son | Jr Engineer | New Jersey |
| 69 | Marguerite Ehniger | 22 | Daughter | Telephone Operator | New Jersey |
| 70 | Walter Garlick | 63 | Head | Shipping Clerk | New Jersey |
| 71 | Elizabeth Garlick | 62 | Wife | — | New Jersey |
| 72 | Elizabeth Garlick | 31 | Daughter | Typist | New Jersey |
| 73 | Catherine Garlick | 25 | Daughter | Typist | New Jersey |
| 75 | Anthony J. Hillhube | 40 | Head | Fireman | Illinois |
| 76 | Fanny M. Hillhube | 43 | Wife | — | Illinois |
| 77 | Charles F. Hillhube | 20 | Son | Auto Mechanic | New Jersey |
| 78 | Clara Hillhube | 18 | Daughter | — | New Jersey |
| 79 | Alfred J. Harding | 58 | Head | Bricklayer | England |
| 80 | Mary Harding | 58 | Wife | — | Scotland |
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)