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Mary Mclaughlin — 1940 US Census Record
Linked across censuses1940 United States Federal Census · New-Castle-County, Delaware
Our Model Tree links this Mary Mclaughlin across the 1920, 1930 and 1940 US Censuses in New-Castle-County, Delaware (XGBoost, ~Confirmed) — first a spouse (b.~1902), then head of a 6-person household.
Age 38
b. ~1902
Female
Spouse
Born: Delaware
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | New-Castle-County, Delaware |
| Surname | McLaughlin |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Delaware |
| 1935 Residence (City) | Wilmington City |
| 1935 Residence (County) | New Castle |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
| Township / Ward | Wilmington City |
| Est. Birth Year | ~1902 |
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 |
|---|---|---|---|---|
| Elizabeth Mclaughlin | Daughter | — | 4 | ~1936 |
| Katherine Mclaughlin | Daughter | — | 3 | ~1937 |
| Mark Mclaughlin | Head | — | 36 | ~1904 |
| William Mclaughlin | Son | — | 5 | ~1935 |
| Mark Mclaughlin | Son | — | 1 | ~1939 |
| Mary Mclaughlin | Spouse | — | 38 | ~1902 |
Census Appearances
1920
New Castle, …
Other, age 18
New Castle, Delaware · implied b. ~1902 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McLaughlin |
| Given Name | Mary G |
| Relationship to Head | Sister |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Delaware |
| Father's Birthplace | Delaware |
| Mother's Birthplace | Delaware |
| Occupation | Measurer |
| Industry | Morocco |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
1930
New Castle, …
Other, age 28
New Castle, Delaware · implied b. ~1902 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McLaughlin |
| Given Name | Mary E. |
| Relationship to Head | Sister-in-law |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Delaware |
| Father's Birthplace | Delaware |
| Mother's Birthplace | Delaware |
| Occupation | Weaver |
| Industry | Leather Mks |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
1940
New-Castle-County, Delaware
Spouse, age 38
New-Castle-County, Delaware · implied b. ~1902 — 6 household members
| Surname | McLaughlin |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Delaware |
| 1935 Residence (City) | Wilmington City |
| 1935 Residence (County) | New Castle |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| 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 Mclaughlin 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 Mclaughlin
Spouse · 1940 · age 38 · b. ~1902 · Delaware
★ 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 — New-Castle-County, Delaware
Open full size
1940 US Federal Census — New-Castle-County, Delaware
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00551-00028)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mabel M. Hill | 59 | Mother | — | Delaware |
| 2 | John A. Hill | 29 | Brother | Folder | Delaware |
| 3 | Harry S. Berry | 41 | Head | Bookkeeper | Delaware |
| 4 | Elizabeth H. Berry | 41 | Wife | — | Delaware |
| 5 | Elizabeth C. Berry | 10 | Daughter | — | Delaware |
| 6 | Alexander G. Bryce | 50 | Head | Superintendent | Scotland |
| 7 | Gladys Bryce | 36 | Wife | — | Massachusetts |
| 8 | Beverley G. Bryce | 17 | Daughter | — | Massachusetts |
| 9 | Barbara J. Bryce | 15 | Daughter | — | Massachusetts |
| 10 | Betty Jane Bryce | 12 | Daughter | — | Massachusetts |
| 11 | Alexander G. Jr. Bryce | 6 | Son | — | Pennsylvania |
| 12 | G. Douglas Bryce | 2 | Son | — | Delaware |
| 13 | Mark W. Mclaughlin | 36 | Head | Textile Worker | Delaware |
| 14 | Mary Mclaughlin THIS PERSON | 38 | Wife | — | Delaware |
| 15 | William Mclaughlin | 5 | Son | — | Delaware |
| 16 | Elizabeth Mclaughlin | 4 | Daughter | — | Delaware |
| 17 | Katherine Mclaughlin | 3 | Daughter | — | Delaware |
| 18 | Mark W. Jr. Mclaughlin | 1 | Son | — | Delaware |
| 19 | Grant P. Perry | 37 | Head | Salesman | Delaware |
| 20 | Marion Perry | 37 | Wife | — | Delaware |
| 21 | Wilma Jane Perry | 4 | Daughter | — | Delaware |
| 22 | Margaret Hahn | 63 | Mother-in-law | — | Delaware |
| 23 | Andrew Morrison | 38 | Head | Dental Technician | Scotland |
| 24 | Hildred Morrison | 38 | Wife | — | Canada-English |
| 25 | Durant Morrison | 4 | Son | — | Delaware |
| 26 | Israel Eiseman | 62 | Head | — | Russia |
| 27 | Minnie Eiseman | 46 | Wife | — | Russia |
| 28 | Edith R. Eiseman | 25 | Daughter | New Worker | Delaware |
| 29 | Martin Eiseman | 23 | Son | Salesman | Delaware |
| 30 | Etta Eiseman | 17 | Daughter | — | Delaware |
| 31 | Herbert H. Eiseman | 11 | Son | — | Delaware |
| 32 | Norman Eiseman | 6 | Son | — | Delaware |
| 33 | Norman P. Crouch | 61 | Head | Bank Salesman | Delaware |
| 34 | Anna C. Crouch | 55 | Wife | — | Delaware |
| 35 | Abe Esmark | 55 | Head | Proprietor | Austria |
| 36 | Essie Esmark | 55 | Wife | Saleslady | West Virginia |
| 37 | Clyde Ostwalt | 45 | Head | Steam Engineer | North Carolina |
| 38 | Anna Ostwalt | 42 | Wife | — | Delaware |
| 39 | Martha C. Walker | 76 | Mother-in-law | — | Delaware |
| 40 | Irving Spektor | 40 | Head | Linoleum Layer | Pennsylvania |
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)