MS
Margaret Shea — 1940 US Census Record
Model Tree available1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this Margaret Shea across the 1920, 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed), with identified parents John & Thomas — first a daughter (b.~1911), then head of a 3-person household.
Age 29
b. ~1911
Female
Daughter
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Shea |
| Given Name | Margaret M |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore |
| Additional Details | |
| Occupation | Secretary |
| Industry | Physician |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 1400 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Secretary |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1911 |
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 Margaret | Age | Birth yr |
|---|---|---|---|---|
| John Shea | Son | — | 26 | ~1914 |
| Margaret Shea | Head | — | 67 | ~1873 |
| Margaret Shea | Daughter | — | 29 | ~1911 |
Census Appearances
1920
None, Maryland
Daughter, age 9
None, Maryland · implied b. ~1911 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Shea |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Daughter, age 19
Baltimore, Maryland · implied b. ~1911 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Shea |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| 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 29
Baltimore-City-County, Maryland · implied b. ~1911 — 3 household members
| Surname | Shea |
| Given Name | Margaret M |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore |
| Occupation | Secretary |
| Industry | Physician |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 1400 |
| Highest Grade | No 8 |
| 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 Margaret Shea across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage. Identified parents: father John Shea (~0.92 confidence) and father Thomas Shea (~0.92 confidence) and mother Margaret Shea (~0.92 confidence) and mother Margaret Shea (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Shea
b. ~1864
Source father
● Household
· direct · ~0.92
Father
Thomas Shea
b. ~1869
Source father
● Household
· direct · ~0.92
Mother
Margaret Shea
b. ~1873
Source mother
● Household
· direct · ~0.92
Mother
Margaret Shea
b. ~1880
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Margaret Shea
Daughter · 1940 · age 29 · b. ~1911 · Maryland
★ You are viewing this record
Sibling
John Shea
Sibling · 1940 · age 26
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
39 people indexed on this census page (nara:1940:m-t0627-01516-00271)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Earl L Hoffman | 15 | Son | Stock Boy | Maryland |
| 42 | Charles L H Brooks | 57 | Head | Tally Clerk | Maryland |
| 43 | Olive D Q Brooks | 57 | Wife | — | Virginia |
| 44 | Charles L Jr Brooks | 18 | Son | Office Clerk | Maryland |
| 45 | David E Q Jones | 25 | Head | — | N. Carolina |
| 46 | Ruth L Jones | 40 | Daughter | Waitress | Virginia |
| 47 | Clinton J De Baugh | 51 | Head | Jobbing | Maryland |
| 48 | Bessie M De Baugh | 49 | Wife | — | Maryland |
| 49 | Clinton J De Baugh | 18 | Son | — | Maryland |
| 50 | Mary V Disney | 73 | Lodger | — | Maryland |
| 51 | John H Hayden | 42 | Head | Post Office Clerk | Maryland |
| 52 | Lillian J Q Hayden | 39 | Wife | — | Maryland |
| 53 | Walter M Hayden | 13 | Son | — | Maryland |
| 54 | Donald O Hayden | 9 | Son | — | Maryland |
| 55 | George L Anderson | 18 | Nephew | Grocery Clerk | Maryland |
| 56 | John R Mcdonald | 41 | Head | Auto Mechanic | Maryland |
| 57 | Jennie V Q Mcdonald | 40 | Wife | — | Maryland |
| 58 | William J Mcdonald | 18 | Son | Office Clerk | Maryland |
| 59 | Katie Green | 66 | Mother in law | — | Maryland |
| 60 | Margaret A Q Shea | 67 | Head | — | Maryland |
| 61 | Margaret M Shea THIS PERSON | 29 | Daughter | Secretary | Maryland |
| 62 | John F Shea | 26 | Son | Cashier | Maryland |
| 63 | Margaret A Q Simmons | 37 | Head | Gas Mask Assembler | Maryland |
| 64 | George B Jr Simmons | 8 | Son | — | Maryland |
| 65 | Florence Hamper | 57 | Head | — | Maryland |
| 66 | William Gude | 37 | Brother-in-law | Manager | Maryland |
| 67 | Mildred Gude | 26 | Daughter | Cashier | Maryland |
| 68 | Edgar M Keller | 26 | Head | General Clerk | Maryland |
| 69 | Susanna M Keller | 22 | Wife | Salesperson | Pennsylvania |
| 70 | Richard S Harrison | 66 | Head | Paperhanger | Maryland |
| 71 | Nina E Q Harrison | 63 | Wife | — | Maryland |
| 72 | Virginia Harrison | 30 | Daughter | Stenographer | Maryland |
| 73 | Margaret Horseman | 28 | Daughter | Office Clerk | Maryland |
| 74 | Robert C Mumma | 32 | Head | Inspector | Maryland |
| 75 | Marion R Mumma | 29 | Wife | — | Maryland |
| 76 | Robert L Mumma | 7 | Son | — | Maryland |
| 77 | Thomas L Mumma | 5 | Son | — | Maryland |
| 78 | Robert C Jr Mumma | 2 | Son | — | Maryland |
| 80 | Jack J Dhudra | 36 | Head | Bartender | Pennsylvania |
Pedigree Summary
Margaret + 1 sibling
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)