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Mary Mclaughlin — 1940 US Census Record
Model Tree available1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this Mary Mclaughlin across the 1920, 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed), with identified parents Elizabeth & Elizabeth — first a daughter (b.~1918), then head of a 4-person household.
Age 22
b. ~1918
Female
Daughter
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | McLaughlin |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Additional Details | |
| Occupation | Stenographer |
| Industry | Retail goods |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 988 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same house |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Stenographer |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1918 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Mclaughlin | Daughter | — | 22 | ~1918 |
| Elizabeth Mclaughlin | Head | — | 58 | ~1882 |
| William Watkins | Other | — | 49 | ~1891 |
| Thomas Mclaughlin | Son | — | 28 | ~1912 |
Census Appearances
1920
None, Maryland
Daughter, age 2
None, Maryland · implied b. ~1918 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McLaughlin |
| Given Name | Mary O. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Daughter, age 12
Baltimore, Maryland · implied b. ~1918 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McLaughling |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Daughter, age 22
Baltimore-City-County, Maryland · implied b. ~1918 — 4 household members
| Surname | McLaughlin |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Occupation | Stenographer |
| Industry | Retail goods |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 988 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same house |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
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 3 locations, using XGBoost record linkage. Identified parents: mother Elizabeth Mclaughlin (~0.92 confidence) and mother Elizabeth Mclaughlin (~0.92 confidence) and father Thomas Mclaughling (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Elizabeth Mclaughlin
b. ~1882
Source mother
● Household
· direct · ~0.92
Mother
Elizabeth Mclaughlin
b. ~1887
Source mother
● Household
· direct · ~0.92
Father
Thomas Mclaughling
b. ~1887
Source father
● Household
· direct · ~0.92
This person
Anchor record
Mary Mclaughlin
Daughter · 1940 · age 22 · b. ~1918 · Maryland
★ You are viewing this record
Sibling
Thomas Mclaughlin
Sibling · 1940 · age 28
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
1940 US Federal Census — Baltimore-City-County, Maryland
Open full size
1940 US Federal Census — Baltimore-City-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01516-00137)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Paula Sadler | 6 | Daughter | — | Maryland |
| 42 | Joseph F. Gessner | 52 | Head | Machinist | Maryland |
| 43 | Anna M. Gessner | 47 | Wife | — | Maryland |
| 44 | Edison Gessner | 19 | Son | Helper | Maryland |
| 45 | Wanetta Gessner | 14 | Daughter | — | Maryland |
| 46 | Elizabeth Mclaughlin | 58 | Head | — | Maryland |
| 47 | Thomas Mclaughlin | 28 | Son | Window Assembler | Maryland |
| 48 | Mary E. Mclaughlin THIS PERSON | 22 | Daughter | Stenographer | Maryland |
| 49 | William F. Watkins | 49 | Brother | Millwright | Maryland |
| 50 | William H. Learman | 34 | Head | Upholstery | Maryland |
| 51 | Mildred M. Learman | 35 | Wife | — | Maryland |
| 52 | Maurice Snyder | 61 | Brother-in-law | Machinist | Pennsylvania |
| 53 | Emma Snyder | 61 | Mother-in-law | — | Pennsylvania |
| 54 | Edith M. Becker | 48 | Head | — | Maryland |
| 55 | Myrtle A. Becker | 22 | Daughter | Secretary | Maryland |
| 56 | Carroll Becker | 14 | Son | — | Maryland |
| 57 | Phyllis Becker | 11 | Daughter | — | Maryland |
| 58 | William D. Stine | 54 | Head | Manager Meat Department | Maryland |
| 59 | Loda Stine | 54 | Wife | — | Pennsylvania |
| 60 | William B. Stine | 21 | Son | Sheet Metal Worker | Maryland |
| 61 | John W. Wheeler | 47 | Head | Trucker | Maryland |
| 62 | Pauline Wheeler | 36 | Wife | — | Maryland |
| 63 | John Wheeler | 20 | Son | — | Maryland |
| 64 | Maxine Wheeler | 19 | Daughter | Saleslady | Maryland |
| 65 | Hilda Wheeler | 17 | Daughter | — | Maryland |
| 66 | Richard F. Geraghty | 36 | Head | Checker | Maryland |
| 67 | Carrie Geraghty | 33 | Wife | Waitress | Maryland |
| 68 | Richard Jr. Geraghty | 8 | Son | — | Maryland |
| 69 | Martin Geraghty | 6 | Son | — | Maryland |
| 70 | Genevieve Willback | 59 | Mother-in-law | — | Maryland |
| 71 | Alfred H. France | 38 | Head | Salesman | Maryland |
| 72 | Helen A. France | 29 | Wife | — | Maryland |
| 73 | Alfreda France | 16 | Daughter | — | Maryland |
| 74 | Dorothy France | 14 | Daughter | — | Maryland |
| 75 | Howard France | 11 | Son | — | Maryland |
| 76 | Helen France | 1 | Daughter | — | Maryland |
| 77 | John W. Mckinney | 37 | Head | Flat Die Pressman | Maryland |
| 78 | Florence M. Mckinney | 39 | Wife | — | Maryland |
| 79 | Robert Seibert | 38 | Head | Repairman | Maryland |
| 80 | Emma Seibert | 66 | Mother | — | Maryland |
Pedigree Summary
Mary + 1 sibling
Gen 1 · 3 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)