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Mary Lennon — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Essex, New Jersey
Our Model Tree links this Mary Lennon across the 1920, 1930 and 1940 US Censuses in Essex, New Jersey (XGBoost, ~Confirmed) — first a spouse (b.~1887), then head of a 8-person household.
Age 43
b. ~1887
Female
Spouse
Born: Ireland
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Essex, New Jersey |
| Surname | Lennon |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1905 |
| Age at First Marriage | 23 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Occupation | none |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Township / Ward | Newark City |
| Est. Birth Year | ~1887 |
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.
8 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Lennon | Daughter | — | 20 | ~1910 |
| John Lennon | Head | — | 47 | ~1883 |
| Margaret Lennon | Daughter | — | 18 | ~1912 |
| Mary Lennon | Spouse | — | 43 | ~1887 |
| Elizabeth Lennon | Daughter | — | 6 | ~1924 |
| Helen Lennon | Daughter | — | 14 | ~1916 |
| John Lennon | Son | — | 16 | ~1914 |
| James Lennon | Son | — | 8 | ~1922 |
Census Appearances
1920
Essex, New …
Spouse, age 32
Essex, New Jersey · implied b. ~1888 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lennon |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Ireland |
| Year of Immigration | 1905 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Year of Naturalization | 1915 |
| Birthplace (normalized) | ireland |
1930
Essex, New …
Spouse, age 43
Essex, New Jersey · implied b. ~1887 — 8 household members
| Surname | Lennon |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1905 |
| Age at First Marriage | 23 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | none |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
Essex-County, New …
Spouse, age 50
Essex-County, New Jersey · implied b. ~1890 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lennon |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | Bloomfield Town |
| 1935 Residence (County) | Essex |
| Naturalization Status | Naturalized |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
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 Lennon across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Lennon
Spouse · 1930 · age 43 · b. ~1887 · New Jersey
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Essex, New Jersey
Open full size
1930 US Federal Census — Essex, New Jersey
Page Contents
50 people indexed on this census page (ia:1930:newjerseycensus00reel1339:0800)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | William H. Spengler | 73 | Head | President | Germany |
| 52 | Bertha Spengler | 68 | Wife | None | Germany |
| 53 | William Jr. Spengler | 42 | Son | Truck Driver | New Jersey |
| 54 | Christian Meyer | 32 | Head | Jeweler | Germany |
| 55 | Frieda Meyer | 28 | Wife | None | Germany |
| 56 | Robert F. Mclaughlin | 32 | Head | Brake Keeper | Virginia |
| 57 | Ann E. Mclaughlin | 27 | Wife | None | New York |
| 58 | Anthony Monaco | 45 | Head | Tailor | Italy |
| 59 | Gertrude A. Burkert | 46 | Sister-in-law | None | Pennsylvania |
| 60 | Daniel Peters | 47 | Head | Elevator Operator | New York |
| 61 | Lottie Peters | 35 | Wife | Packer | New Jersey |
| 62 | Eleanor Walsh | 19 | Daughter | None | New Jersey |
| 63 | William Walsh | 20 | Son-in-law | Driver Truck | New Jersey |
| 64 | William 3Rd Walsh | 1 | Grandson | None | New Jersey |
| 65 | Mary Peters | 17 | Daughter | Bill Clerk | New Jersey |
| 66 | Grace Peters | 16 | Daughter | None | New Jersey |
| 67 | Robert E. Byrne | 31 | Head | Salesman | Ohio |
| 68 | Mary Byrne | 31 | Wife | None | Pennsylvania |
| 69 | Robert Byrne | 2 | Son | None | New Jersey |
| 70 | Frank R. Flynn | 33 | Head | Rating Clerk | New Jersey |
| 71 | Mary Flynn | 63 | Mother | None | New Jersey |
| 72 | Jean Flynn | 8 | Daughter | None | New Jersey |
| 73 | Charles Flynn | 5 | Daughter | None | New Jersey |
| 74 | John Lennon | 47 | Head | Stationary Fireman | Ireland |
| 75 | Mary Lennon THIS PERSON | 43 | Wife | None | Ireland |
| 76 | Mary Lennon | 20 | Daughter | Stenographer | New Jersey |
| 77 | Margaret Lennon | 18 | Daughter | Stenographer | New Jersey |
| 78 | John Lennon | 16 | Son | None | New Jersey |
| 79 | Helen Lennon | 14 | Daughter | None | New Jersey |
| 80 | James Lennon | 8 | Son | None | New Jersey |
| 81 | Elizabeth Lennon | 6 | Daughter | None | New Jersey |
| 82 | James Byrne | 40 | Head | Business Agent | New Jersey |
| 83 | Frances Byrne | 41 | Wife | None | New Jersey |
| 84 | Mary Byrne | 16 | Daughter | None | New Jersey |
| 85 | James Byrne | 14 | Son | None | New Jersey |
| 86 | Frances Byrne | 13 | Daughter | None | New Jersey |
| 87 | Virginia Byrne | 11 | Daughter | None | New Jersey |
| 88 | Mabel De Laney | 38 | Head | Housekeeper | New York |
| 89 | George A. De Laney | 18 | Son | Truck Driver | New York |
| 90 | Violet De Laney | 16 | Daughter | None | New York |
| 91 | Thomas H. Madden | 30 | Head | Electrician | New Jersey |
| 92 | Helen Madden | 29 | Wife | None | New Jersey |
| 93 | Clare Madden | 4 | Daughter | None | New Jersey |
| 94 | Thomas Madden | 2 | Son | None | New Jersey |
| 95 | Helen Madden | 0 | Daughter | None | New Jersey |
| 96 | John Coughlen | 64 | Head | Musician | Wales |
| 97 | Laura Coughlen | 58 | Wife | None | New York |
| 98 | Florence M. Shanley | 34 | Head | None | New York |
| 99 | Alice Shanley | 11 | Daughter | None | New York |
| 100 | Charles Jr. Shanley | 8 | Son | None | New York |
Related Census Records
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)