MC
Mary Costello — 1940 US Census Record
Model Tree available1940 United States Federal Census · Providence-County, Rhode Island
Our Model Tree links this Mary Costello across the 1920, 1930 and 1940 US Censuses in Providence-County, Rhode Island (XGBoost, ~Confirmed), with identified parents Annie & Annie — first a daughter (b.~1886), then head of a 8-person household.
Age 54
b. ~1886
Female
Daughter
Born: Rhode Island
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Providence-County, Rhode Island |
| Surname | Costello |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 54 |
| Marital Status | Single |
| Birthplace | Rhode Island |
| 1935 Residence (City) | Providence City |
| 1935 Residence (County) | Providence |
| Additional Details | |
| Occupation | Bookkeeper |
| Industry | Electroplating shop |
| Class of Worker | PW |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
| Occupation | Bookkeeper |
| Township / Ward | Providence City |
| Est. Birth Year | ~1886 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Margaret Costello | Daughter | — | 51 | ~1889 |
| M Bettidge | Daughter | — | 48 | ~1892 |
| Mary Costello | Daughter | — | 54 | ~1886 |
| Annie Costello | Head | — | 77 | ~1863 |
| Francis Masterson | Other | — | 20 | ~1920 |
| Edward Cafferty | Other | — | 67 | ~1873 |
| John Costello | Son | — | 56 | ~1884 |
| Edward Costello | Son | — | 50 | ~1890 |
Census Appearances
1920
Providence, Rhode …
Daughter, age 33
Providence, Rhode Island · implied b. ~1887 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Costello |
| Given Name | Mary E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 33 |
| Marital Status | Single |
| Birthplace | Rhode Island |
| Father's Birthplace | Iceland |
| Mother's Birthplace | Iceland |
| Occupation | Bookkeeper |
| Industry | Biscuit Co |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
1930
Providence, Rhode …
Daughter, age 44
Providence, Rhode Island · implied b. ~1886 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Costello |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Single |
| Birthplace | Rhode Island |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Occupation | Bookkeeper |
| Industry | Electric Plant |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
1940
Providence-County, Rhode …
Daughter, age 54
Providence-County, Rhode Island · implied b. ~1886 — 8 household members
| Surname | Costello |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 54 |
| Marital Status | Single |
| Birthplace | Rhode Island |
| 1935 Residence (City) | Providence City |
| 1935 Residence (County) | Providence |
| Occupation | Bookkeeper |
| Industry | Electroplating shop |
| Class of Worker | PW |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
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 Costello across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Annie Costello (~0.92 confidence) and mother Annie Costello (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Annie Costello
b. ~1863
Source mother
● Household
· direct · ~0.92
Mother
Annie Costello
b. ~1874
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Costello
Daughter · 1940 · age 54 · b. ~1886 · Rhode Island
★ You are viewing this record
Sibling
Edward Costello
Sibling · 1940 · age 50
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Costello
Sibling · 1940 · age 56
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Costello
Sibling · 1940 · age 51
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
M Bettidge
Sibling · 1940 · age 48
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 — Providence-County, Rhode Island
Open full size
1940 US Federal Census — Providence-County, Rhode Island
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03779-00586)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Lillian F. Sherry | 29 | Head | Stock Clerk | Rhode Island |
| 2 | Extra Line | None | — | — | — |
| 3 | Omer Dionne | 28 | Head | Driver-Salesman | Rhode Island |
| 4 | Zarie Dionne | 26 | Wife | Proprietress | Rhode Island |
| 5 | Frederick L. Foster | 68 | Head | Salesman | Rhode Island |
| 6 | Alice V. Foster | 39 | Wife | — | Rhode Island |
| 7 | Frederick H. Foster | 18 | Son | — | Rhode Island |
| 8 | James L. Foster | 13 | Son | — | Rhode Island |
| 9 | Helen R. Donahue | 25 | Maid | Maid | Rhode Island |
| 10 | Oscar E. Haslehurst | 63 | Head | Stationary Engineer | Rhode Island |
| 11 | Jennie E. Haslehurst | 64 | Wife | — | Denmark |
| 12 | Doris E. Haslehurst | 38 | Daughter | Teacher | Rhode Island |
| 13 | Paul P. Haslehurst | 26 | Son | Accountant | Rhode Island |
| 14 | Alton L. Haslehurst | 18 | Grandson | New Worker | Rhode Island |
| 15 | Annie M. Costello | 77 | Head | — | Irish Free State |
| 16 | John F. Costello | 56 | Son | — | Rhode Island |
| 17 | Mary E. Costello THIS PERSON | 54 | Daughter | Bookkeeper | Rhode Island |
| 18 | Margaret L. Costello | 51 | Daughter | Switchboard Operator | Rhode Island |
| 19 | Edward H. Costello | 50 | Son | Truck Driver | Rhode Island |
| 20 | M. Gertrude Bettidge | 48 | Daughter | — | Rhode Island |
| 21 | Edward V. Cafferty | 67 | Half brother | — | Rhode Island |
| 22 | Francis L. Masterson | 20 | Nephew | Counter Clerk | Iowa |
| 23 | Leroy Clark | 48 | Head | Washing Machine Operator | Iowa |
| 24 | Gertrude Clark | 47 | Wife | — | Massachusetts |
| 25 | Dorothy Clark | 24 | Daughter | — | Massachusetts |
| 26 | Douglas Clark | 78 | Father | — | Connecticut |
| 27 | Eva Peacock | 37 | Lodger | Presser | England |
| 28 | Earle D. Bakeman | 41 | Head | Medical Doctor | Rhode Island |
| 29 | Walter J. Molony | 34 | Head | Medical Doctor | Rhode Island |
| 30 | Areba Molony | 32 | Wife | — | Pennsylvania |
| 31 | Samuel Gantz | 69 | Head | Osteopathic Doctor | Indiana |
| 32 | Alice Gantz | 68 | Wife | — | Iowa |
| 33 | Edwin Gantz | 35 | Head | Osteopathic Doctor | Indiana |
| 34 | Minnie Gantz | 33 | Wife | — | Ohio |
| 35 | John R. Livingston | 33 | Head | Chiropractic Doctor | Rhode Island |
| 36 | Mary Livingston | 26 | Wife | — | Rhode Island |
| 37 | Benjamin Jr. Priest | 52 | Head | Foreman-Weaver | Russia |
| 38 | Eva Priest | 50 | Wife | — | Connecticut |
| 39 | Edward Priest | 31 | Son | Shipping Clerk | Rhode Island |
| 40 | Helen Priest | 23 | Daughter | Counter Clerk | Rhode Island |
Pedigree Summary
Mary + 4 siblings
Gen 1 · 2 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)