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Mary Lynch — 1940 US Census Record
Model Tree available1940 United States Federal Census · Hudson-County, New Jersey
Our Model Tree links this Mary Lynch across the 1920, 1930 and 1940 US Censuses in Hudson-County, New Jersey (XGBoost, ~Confirmed), with identified parents Patrick & James — first a daughter (b.~1908), then head of a 3-person household.
Age 32
b. ~1908
Female
Daughter
Born: New Jersey
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Hudson-County, New Jersey |
| Surname | Lynch |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Jersey City |
| 1935 Residence (County) | Hudson |
| Additional Details | |
| Occupation | Audit Clerk |
| Industry | Imp. House |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 1350 |
| Highest Grade | H 4 |
| 1935 Residence | Same house |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Occupation | Audit Clerk |
| Township / Ward | Jersey City |
| 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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Lynch | Daughter | — | 32 | ~1908 |
| Patrick Lynch | Head | — | 76 | ~1864 |
| Catherine Lynch | Spouse | — | 73 | ~1867 |
Census Appearances
1920
Hudson, New …
Daughter, age 11
Hudson, New Jersey · implied b. ~1909 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lynch |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New York |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1930
Hudson, New …
Daughter, age 22
Hudson, New Jersey · implied b. ~1908 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lynch |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Occupation | Clerk |
| Industry | Insurance Co |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Hudson-County, New …
Daughter, age 32
Hudson-County, New Jersey · implied b. ~1908 — 3 household members
| Surname | Lynch |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Jersey City |
| 1935 Residence (County) | Hudson |
| Occupation | Audit Clerk |
| Industry | Imp. House |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 1350 |
| Highest Grade | H 4 |
| 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 Lynch across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Patrick Lynch (~0.92 confidence) and father James Lynch (~0.92 confidence) and mother Catherine Lynch (~0.92 confidence) and mother Mamie Lynch (~0.92 confidence) and mother Anna Lynch (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Patrick Lynch
b. ~1864
Source father
● Household
· direct · ~0.92
Father
James Lynch
b. ~1878
Source father
● Household
· direct · ~0.92
Mother
Catherine Lynch
b. ~1867
Source mother
● Household
· direct · ~0.92
Mother
Mamie Lynch
b. ~1887
Source mother
● Household
· direct · ~0.92
Mother
Anna Lynch
b. ~1885
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Lynch
Daughter · 1940 · age 32 · b. ~1908 · New Jersey
★ You are viewing this record
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
31 people indexed on this census page (nara:1940:m-t0627-02404-00182)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Rubin Harry Helfer | 50 | Lodger | Paper Hanger | Poland |
| 42 | Edward Helfer | 17 | Lodger | — | New York |
| 43 | John Egan | 63 | Head | — | Ireland |
| 44 | Mary Sheehan | 22 | Niece | Library Asst | New York |
| 45 | Samuel Levison | 62 | Head | Salesman | Sweden |
| 46 | Wife Currie | None | F | — | — |
| 47 | Stephen Williams | 27 | Lodger | Driver | New York |
| 48 | George Seeley | 57 | Head | Gardener | New Jersey |
| 49 | Bertha Seeley | 54 | Wife | — | New Jersey |
| 50 | Lloyd G. Seeley | 21 | Son | Gardener | New Jersey |
| 51 | Katherine Waite | 47 | Wife | — | New Jersey |
| 52 | Helena Waite | 14 | Daughter | — | New Jersey |
| 53 | James R. Molloy | 38 | Head | Clerk | New Jersey |
| 54 | Caroline Molloy | 61 | Mother | — | England |
| 55 | Elizabeth Molloy | 32 | Sister | Int. Decorator | New Jersey |
| 56 | Edward Molloy | 22 | Brother | New Worker | New Jersey |
| 57 | William Vlamis | 47 | Head | Shoe Repr. | Greece |
| 58 | Matthews De Noia | 47 | Head | Steam Fitter | New York |
| 59 | Geneva De Noia | 41 | Wife | — | Ohio |
| 60 | Elizabeth De Noia | 16 | Daughter | — | Jersey City |
| 61 | Thomas De Noia | 16 | Son | — | Jersey City |
| 62 | Dorothy De Noia | 5 | Daughter | — | Jersey City |
| 63 | Lottie Bagnell | 50 | Cousin | Secretary | New York |
| 64 | James Hurley | 54 | Head | Engineer | Ireland |
| 65 | Virginia Hurley | 24 | Daughter | Typist | New Jersey |
| 66 | Alice Hurley | 23 | Daughter | Stenographer | New Jersey |
| 67 | James Jr. Hurley | 14 | Son | — | New Jersey |
| 68 | Patrick Lynch | 76 | Head | Utility Man | Ireland |
| 69 | Catherine Lynch | 73 | Wife | — | Ireland |
| 70 | Mary Lynch THIS PERSON | 32 | Daughter | Audit Clerk | New Jersey |
| 71 | William Geo. Tiemann | 21 | Head | Seaman | New Jersey |
Pedigree Summary
Mary
Gen 1 · 5 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)