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Mary Lennon — 1920 US Census Record
Linked across censuses1920 United States Federal Census · New Castle, Delaware
Our Model Tree links this Mary Lennon across the 1920 and 1930 US Censuses in New Castle, Delaware (XGBoost, ~Confirmed) — first a daughter (b.~1909), then head of a 12-person household.
Age 11
b. ~1909
Female
Daughter
Born: Delaware
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | New Castle, Delaware |
| Surname | Lennon |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Delaware |
| Father's Birthplace | Italy |
| Mother's Birthplace | Delaware |
| Additional Details | |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
| Township / Ward | Wilmington City |
| Est. Birth Year | ~1909 |
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.
12 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Catherine Lennon | Spouse | — | 32 | ~1888 |
| Elizabeth Martino | Other | — | 35 | ~1885 |
| Henry Lennon | Son | — | 7 | ~1913 |
| Francis Lennon | Son | — | 9 | ~1911 |
| Mary Lennon | Daughter | — | 11 | ~1909 |
| Joseph Lennon | Son | — | 2 | ~1918 |
| John Martino | Other | — | 33 | ~1887 |
| Margaret Lennon | Daughter | — | 13 | ~1907 |
| Clement Lennon | Son | — | 15 | ~1905 |
| Roselina Lennon | Daughter | — | 4 | ~1916 |
| Catherine Lennon | Daughter | — | 5 | ~1915 |
| Joseph Lennon | Head | — | 40 | ~1880 |
Census Appearances
1920
New Castle, …
Daughter, age 11
New Castle, Delaware · implied b. ~1909 — 12 household members
| Surname | Lennon |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Delaware |
| Father's Birthplace | Italy |
| Mother's Birthplace | Delaware |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
1930
New Castle, …
Daughter, age 22
New Castle, Delaware · implied b. ~1908 — 13 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lemon |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Delaware |
| Father's Birthplace | Italy |
| Mother's Birthplace | Delaware |
| Occupation | Saleslady |
| Industry | Grocery |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
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 2 US Census years (1920 and 1930) in New Castle, Delaware, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Lennon
Daughter · 1920 · age 11 · b. ~1909 · Delaware
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Sibling
Henry Lennon
Sibling · 1920 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Lennon
Sibling · 1920 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Lennon
Sibling · 1920 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Lennon
Sibling · 1920 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Lennon
Sibling · 1920 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Roselina Lennon
Sibling · 1920 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Clement Lennon
Sibling · 1920 · age 15
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
1920 US Federal Census — New Castle, Delaware
Open full size
1920 US Federal Census — New Castle, Delaware
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu201unit:0563)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Albert Smith | 38 | Head | Laborer | Delaware |
| 52 | Alice Smith | 37 | Wife | — | Delaware |
| 53 | John Smith | 11 | Son | — | Delaware |
| 54 | Mary Smith | 8 | Daughter | — | Delaware |
| 55 | Alice Smith | 5 | Daughter | — | Delaware |
| 56 | Joseph Lennon | 40 | Head | Barber | Italy |
| 57 | Catherine Lennon | 32 | Wife | — | Delaware |
| 58 | Clement Lennon | 15 | Son | — | Delaware |
| 59 | Margaret Lennon | 13 | Daughter | — | Delaware |
| 60 | Mary Lennon THIS PERSON | 11 | Daughter | — | Delaware |
| 61 | Francis Lennon | 9 | Son | — | Delaware |
| 62 | Henry Lennon | 7 | Son | — | Delaware |
| 63 | Catherine Lennon | 5 | Daughter | — | Delaware |
| 64 | Roselina Lennon | 4 | Daughter | — | Delaware |
| 65 | Joseph Lennon | 2 | Son | — | Delaware |
| 66 | John Martino | 33 | Brother-in-law | — | Delaware |
| 67 | Elizabeth Martino | 35 | Sister-in-law | — | Delaware |
| 68 | Fred J Harkins | 40 | Head | Brakeman | Delaware |
| 69 | Sarah Harkins | 40 | Wife | — | Ireland |
| 70 | Frederick Dotson | 37 | Head | Salesman | Scotland |
| 71 | Melissa Dotson | 34 | Wife | — | Delaware |
| 72 | Alvan Dotson | 14 | Son | Laborer | Delaware |
| 73 | Elizabeth Dotson | 12 | Daughter | — | Delaware |
| 74 | Martha Dotson | 10 | Daughter | — | Delaware |
| 75 | Bernard Palmer | 34 | Brother | — | Delaware |
| 76 | Hannah Palmer | 71 | Mother | — | Delaware |
| 77 | Carl Anderson | 45 | Roomer | Laborer | Delaware |
| 78 | Mary Anderson | 40 | Wife | — | Delaware |
| 79 | George Anderson | 20 | Son | Fitter | Maryland |
| 80 | James Anderson | 18 | Son | — | Delaware |
| 81 | Alice Anderson | 12 | Daughter | — | Delaware |
| 82 | Arthur Sparks | 50 | Head | Heater Boy | Delaware |
| 83 | Alice Sparks | 50 | Wife | — | Delaware |
| 84 | Maud Sparks | 19 | Daughter | — | Delaware |
| 85 | Carl Sparks | 20 | Son | — | Delaware |
| 86 | Maria Case | 54 | Head | Clerk | Italy |
| 87 | Angeline Case | 23 | Daughter | Clerk | Italy |
| 88 | Frank Case | 19 | Son | Grocery Store | New Jersey |
| 89 | Helen Case | 15 | Daughter | Clerk | New Jersey |
| 90 | Dominic Stramendi | 45 | Roomer | Plumber | Italy |
| 91 | Annie Walls | 64 | Head | Dress Maker | Pennsylvania |
| 92 | Wm Walls | 35 | Son | Baker | Ireland |
| 93 | Helen E Walls | 35 | Wife | Boarder | Delaware |
| 94 | Francis Walls | 13 | Son | — | Delaware |
| 95 | Harry Walls | 10 | Son | — | Delaware |
| 96 | Mary F Dawson | 65 | Sister | — | Delaware |
| 97 | F. Frank Kane | 50 | Roomer | — | Pennsylvania |
| 98 | Edw J Kennedy | 63 | Roomer | — | Ireland |
| 99 | William Paul | 43 | Roomer | Iron Molder | Maryland |
| 100 | Frank Conselle | 47 | Roomer | Carpenter | Ohio |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 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)