ML
Mary Laughlin — 1940 US Census Record
Model Tree available1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this Mary Laughlin across the 1920, 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed), with identified parents John & Annie — first a spouse (b.~1915), then head of a 7-person household.
Age 25
b. ~1915
Female
Spouse
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Laughlin |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore Md |
| 1935 Residence (County) | Baltimore City |
| Additional Details | |
| Highest Grade | 6 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Baltimore Md |
| Est. Birth Year | ~1915 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| James Laughlin | Other | — | 40 | ~1900 |
| Mary Laughlin | Spouse | — | 25 | ~1915 |
| Margaret Mcnicholas | Spouse | — | 67 | ~1873 |
| James Mcnicholas | Head | — | 68 | ~1872 |
| Mary Burke | Daughter | — | 43 | ~1897 |
| Ursala Burke | Daughter | — | 16 | ~1924 |
| Anthony Mcnicholas | Son | — | 30 | ~1910 |
Census Appearances
1920
Baltimore, Maryland
Daughter, age 5
Baltimore, Maryland · implied b. ~1915 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Laughlin |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read | No |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Daughter, age 15
Baltimore, Maryland · implied b. ~1915 — 18 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Laughlin |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| 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
Spouse, age 25
Baltimore-City-County, Maryland · implied b. ~1915 — 7 household members
| Surname | Laughlin |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore Md |
| 1935 Residence (County) | Baltimore City |
| Highest Grade | 6 |
| 1935 Residence | Same place |
| 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 Laughlin across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Laughlin (~0.92 confidence) and mother Annie Laughlin (~0.92 confidence) and father David Laughlin (~0.92 confidence) and mother Mary Laughlin (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Laughlin
b. ~1878
Source father
● Household
· direct · ~0.92
Mother
Annie Laughlin
b. ~1879
Source mother
● Household
· direct · ~0.92
Father
David Laughlin
b. ~1879
Source father
● Household
· direct · ~0.92
Mother
Mary Laughlin
b. ~1880
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Laughlin
Spouse · 1940 · age 25 · b. ~1915 · Maryland
★ 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 — 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-t0627-01537-00548)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | John Mitchell | 35 | Head | Laborer | Maryland |
| 42 | Mary Mitchell | 32 | Wife | — | Maryland |
| 43 | John Jr Mitchell | 13 | Son | — | Maryland |
| 44 | Mary Mitchell | 11 | Daughter | — | Maryland |
| 45 | Julius Mitchell | 8 | Son | — | Maryland |
| 46 | Josephine Mitchell | 5 | Daughter | — | Maryland |
| 47 | Louise Webb | 35 | Head | Saleslady | Maryland |
| 48 | Donald Webb | 9 | Son | — | Maryland |
| 49 | James Webb | 11 | Son | — | Maryland |
| 50 | Arthur Webb | 13 | Son | — | Maryland |
| 51 | Samuel Sherman | 22 | Head | Laborer | Maryland |
| 52 | Mary Sherman | 56 | Mother | — | Maryland |
| 53 | Thomas Sherman | 25 | Head | Hot Mills | Maryland |
| 54 | Marie Sherman | 23 | Wife | — | Maryland |
| 55 | Arthur James | 35 | Head | Laborer | Maryland |
| 56 | Marie James | 33 | Wife | — | Maryland |
| 57 | Arthur Jr James | 4 | Son | — | Maryland |
| 58 | James Mcnicholas | 68 | Head | Laborer | Maryland |
| 59 | Margaret Mcnicholas | 67 | Wife | — | Maryland |
| 60 | Anthony Mcnicholas | 30 | Son | Steel Worker | Maryland |
| 61 | Mary Burke | 43 | Daughter | Saleslady | Maryland |
| 62 | Ursala Burke | 16 | Daughter | — | Maryland |
| 63 | James Laughlin | 40 | Lodger | Hot Mills | Maryland |
| 64 | Mary Laughlin THIS PERSON | 25 | Wife | — | Maryland |
| 65 | Frank A Hurka | 34 | Head | Heater | Maryland |
| 66 | Mary E Hurka | 32 | Wife | — | Maryland |
| 67 | Mary Hurka | 15 | Daughter | — | Maryland |
| 68 | Frances Hurka | 12 | Daughter | — | Maryland |
| 69 | Frank B Hurka | 5 | Son | — | Maryland |
| 70 | Frank Hurka | 58 | Father | Produce | Maryland |
| 71 | Johanna Hurka | 56 | Mother | — | Maryland |
| 72 | Edward Miller | 45 | Head | Laborer | Maryland |
| 73 | Marie Miller | 42 | Wife | Ironer | Maryland |
| 74 | Marie Miller | 3 | Daughter | — | Maryland |
| 75 | Louis Modman | 42 | Head | Tavern | Maryland |
| 76 | Minnie Modman | 40 | Wife | — | Maryland |
| 77 | Betty Modman | 6 | Daughter | — | Maryland |
| 78 | Mary Weber | 61 | Mother | — | Maryland |
| 79 | John Weber | 25 | Son | Laborer | Maryland |
| 80 | William Weber | 20 | Son | Laborer | Maryland |
Pedigree Summary
Mary
Gen 1 · 4 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)