MC
Mary Costello — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Warren, Ohio
Our Model Tree links this Mary Costello across the 1920 and 1930 US Censuses in Warren, Ohio (XGBoost, ~Confirmed) — first a daughter (b.~1918), then head of a 8-person household.
Age 12
b. ~1918
Female
Daughter
Born: Ohio
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Warren, Ohio |
| Surname | Costello |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Township / Ward | Franklin Village |
| 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.
8 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Costello | Daughter | — | 12 | ~1918 |
| Elizabeth Costello | Daughter | — | 19 | ~1911 |
| Catherine Costello | Daughter | — | 10 | ~1920 |
| Cecelia Costello | Daughter | — | 22 | ~1908 |
| Michael Costello | Head | — | 56 | ~1874 |
| William Costello | Son | — | 14 | ~1916 |
| Thomas Costello | Son | — | 19 | ~1911 |
| Catherine Costello | Spouse | — | 46 | ~1884 |
Census Appearances
1920
Warren, Ohio
Daughter, age 2
Warren, Ohio · implied b. ~1918 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Costello |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Warren, Ohio
Daughter, age 12
Warren, Ohio · implied b. ~1918 — 8 household members
| Surname | Costello |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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 2 US Census years (1920 and 1930) in Warren, Ohio, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Costello
Daughter · 1930 · age 12 · b. ~1918 · Ohio
★ You are viewing this record
Sibling
Elizabeth Costello
Sibling · 1930 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Costello
Sibling · 1930 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Costello
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Cecelia Costello
Sibling · 1930 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Costello
Sibling · 1930 · age 10
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
1930 US Federal Census — Warren, Ohio
Open full size
1930 US Federal Census — Warren, Ohio
Page Contents
50 people indexed on this census page (ia:1930:ohiocensus00reel1890:0443)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | William H Loolsey | 14 | Son | — | Ohio |
| 2 | Clyde Loolsey | 12 | Son | — | Ohio |
| 3 | Pauline Loolsey | 10 | Daughter | — | Ohio |
| 4 | Mona Loolsey | 8 | Daughter | — | Ohio |
| 5 | Opal Loolsey | 8 | Daughter | — | Ohio |
| 6 | Mildred Loolsey | 5 | Daughter | — | Ohio |
| 7 | Enoch Loolsey | 42 | Head | Machinist | Ohio |
| 8 | Martha J Loolsey | 11 | Wife | — | Ohio |
| 9 | Dan Loolsey | 9 | Son | — | Ohio |
| 10 | Margaret Loolsey | 6 | Daughter | — | Ohio |
| 11 | Irene Snell | 48 | Servant | Servant | Ohio |
| 12 | Morris J Eastham | 24 | Head | Cutter Man | Kentucky |
| 13 | Norma L Eastham | 27 | Wife | Servant | Kentucky |
| 14 | Rosa Eastham | 17 | Sister | — | Kentucky |
| 15 | Herbert Cox | 31 | Head | Beater | Kentucky |
| 16 | Lula Cox | 31 | Wife | — | Kentucky |
| 17 | Ralph D Hare | 27 | Head | Service Station | Ohio |
| 18 | Ollie Hare | 30 | Wife | — | Kentucky |
| 19 | Mary Louise Hare | 3 | Daughter | — | Ohio |
| 20 | Ralph Hare | 1 | Son | — | Ohio |
| 21 | Rose Claire Hare | 0 | Daughter | — | Ohio |
| 22 | Ernest Fowler | 23 | Head | Section Hand | Kentucky |
| 23 | Margaret Fowler | 18 | Wife | — | Ohio |
| 24 | Mary Coyle | 19 | Sister-in-law | — | Ohio |
| 25 | Edward Mullen | 37 | Head | Laborer | Kentucky |
| 26 | Nellie Mullen | 27 | Wife | — | Kentucky |
| 27 | Harold Mullen | 4 | Son | — | Ohio |
| 28 | Edna May Mullen | 2 | Daughter | — | Ohio |
| 29 | James A Robinson | 56 | Head | — | Ohio |
| 30 | Mary I Robinson | 47 | Wife | — | Ohio |
| 31 | James A Robinson | 9 | Son | — | Ohio |
| 32 | William T Deorth | 20 | Head | Backtender | Ohio |
| 33 | Irene Deorth | 23 | Wife | — | Tennessee |
| 34 | Michael E Costello | 56 | Head | Repairman | Ohio |
| 35 | Catherine Costello | 46 | Wife | — | Ohio |
| 36 | Cecelia Costello | 22 | Daughter | Stenographer | Ohio |
| 37 | Thomas Costello | 19 | Son | Shipping Clerk | Ohio |
| 38 | Elizabeth Costello | 19 | Daughter | Sorter | Ohio |
| 39 | William Costello | 14 | Son | — | Ohio |
| 40 | Mary Costello THIS PERSON | 12 | Daughter | — | Ohio |
| 41 | Catherine Costello | 10 | Daughter | — | Ohio |
| 42 | Lester B Charleston | 35 | Head | Truck Driver | Ohio |
| 43 | Edna R Charleston | 28 | Wife | — | Ohio |
| 44 | Dale D Charleston | 6 | Son | — | Ohio |
| 45 | Albert M Charleston | 4 | Son | — | Ohio |
| 46 | Bessie D Charleston | 2 | Daughter | — | Ohio |
| 47 | William Hurley | 57 | Head | Farm Hand | Ohio |
| 48 | Catherine Hurley | 52 | Wife | — | Ohio |
| 49 | Jesse J Hurley | 27 | Son | Laborer | Ohio |
| 50 | Grace L Hurley | 22 | Daughter | Assembler | Ohio |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)