MD
Mary Delaney — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Essex-County, Massachusetts
Our Model Tree links this Mary Delaney across the 1920, 1930 and 1940 US Censuses in Essex-County, Massachusetts (XGBoost, ~Confirmed) — first a spouse (b.~1867), then head of a 3-person household.
Age 73
b. ~1867
Female
Spouse
Born: Ireland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Essex-County, Massachusetts |
| Surname | Delaney |
| Given Name | Mary A |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 73 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | Lynn City |
| 1935 Residence (County) | Essex |
| Naturalization Status | Alien |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | H 4 |
| 1935 Residence | Same house |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Township / Ward | Lynn City |
| Est. Birth Year | ~1867 |
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 |
|---|---|---|---|---|
| Jeremiah Delaney | Head | — | 72 | ~1868 |
| Mary Delaney | Spouse | — | 73 | ~1867 |
| John Delaney | Son | — | 42 | ~1898 |
Census Appearances
1920
Essex, Massachusetts
Spouse, age 60
Essex, Massachusetts · implied b. ~1860 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Delaney |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 60 |
| Marital Status | Married |
| Birthplace | Ireland |
| Year of Immigration | 1880 |
| 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 | 1886 |
| Birthplace (normalized) | ireland |
1930
Essex, Massachusetts
Spouse, age 65
Essex, Massachusetts · implied b. ~1865 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Delaney |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 65 |
| Marital Status | Married |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1885 |
| Age at First Marriage | 22 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
Essex-County, Massachusetts
Spouse, age 73
Essex-County, Massachusetts · implied b. ~1867 — 3 household members
| Surname | Delaney |
| Given Name | Mary A |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 73 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | Lynn City |
| 1935 Residence (County) | Essex |
| Naturalization Status | Alien |
| Income (1939) | 0 |
| Highest Grade | H 4 |
| 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 Delaney 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 Delaney
Spouse · 1940 · age 73 · b. ~1867 · Massachusetts
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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 — Essex-County, Massachusetts
Open full size
1940 US Federal Census — Essex-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01695-00440)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Beulah M Gray | 38 | wife | — | Mass |
| 42 | Lawrence Gray | 2 | son | — | Mass |
| 43 | Richard Gray | 1 | son | — | Mass |
| 44 | George Clemente | 14 | head | — | Mass |
| 45 | Elizabeth Clemente | 12 | daughter | — | Mass |
| 46 | Elizabeth Mclane | 67 | mother | — | Maine |
| 47 | John F Healey | 48 | head | Policeman | Mass |
| 48 | Mary Healey | 48 | wife | — | Mass |
| 49 | Bernard Fogarty | 45 | head | Care Taker | Mass |
| 50 | Margaret Fogarty | 32 | wife | — | Mass |
| 51 | Helen Fogarty | 5 | daughter | — | Mass |
| 52 | Rose Mary Fogarty | 3 | daughter | — | Mass |
| 53 | Thomas F Healey | 27 | head | Sales Clerk | Mass |
| 54 | Rita Healey | 24 | wife | — | Mass |
| 55 | Judith A Healey | 8 | daughter | — | Mass |
| 56 | Judson D Healey | 5 | son | — | Mass |
| 57 | Jeffrey D Healey | 3 | son | — | Mass |
| 58 | Angelo C Mazza | 38 | head | Draftsman | Mass |
| 59 | Mary S Mazza | 35 | wife | — | Mass |
| 60 | Charles Mazza | 6 | son | — | Mass |
| 61 | Jeremiah Delaney | 72 | head | — | Ireland |
| 62 | Mary A Delaney THIS PERSON | 73 | wife | — | Ireland |
| 63 | John S Delaney | 42 | son | Machinist | Mass |
| 64 | Harry Taylor | 46 | head | Sales Clerk | Mass |
| 65 | Mary A Taylor | 37 | daughter | Sales Clerk | Mass |
| 66 | Harry L Taylor | 29 | son | Auto Mech | Mass |
| 67 | James Taylor | 23 | son | Truck Driver | Mass |
| 68 | Caroline E Drew | 63 | head | — | Maine |
| 69 | Leroy E Drew | 44 | nephew | Truck Driver | Mass |
| 70 | Harry L Dow | 56 | head | — | Mass |
| 71 | Angeline E Dow | 51 | wife | — | Mass |
| 72 | Clarence H Dow | 50 | brother | Truck Driver | Mass |
| 73 | Thomas F O'Neill | 26 | head | Reserve Police | Mass |
| 74 | Margaret L O'Neill | 25 | wife | — | Mass |
| 75 | Patricia L O'Neill | 1 | daughter | — | Mass |
| 76 | Thomas Kennedy | 43 | head | Iron Molder | Canada English |
| 77 | Gertrude R Kennedy | 43 | wife | — | Canada English |
| 78 | Doris Kennedy | 22 | daughter | Tel Operator | Canada English |
| 79 | John Kennedy | 21 | son | Apprentice | Canada English |
| 80 | Thomas Kennedy | 14 | son | — | Canada English |
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)