MC
Mary Costello — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Philadelphia, Pennsylvania
Our Model Tree links this Mary Costello across the 1900, 1910 and 1920 US Censuses in Philadelphia, Pennsylvania (XGBoost, ~Confirmed) — first a spouse (b.~1869), then head of a 7-person household.
Age 51
b. ~1869
Female
Spouse
Born: Ireland
Married
1920 Census Record Details
| Census Year | 1920 |
| Location | Philadelphia, Pennsylvania |
| Surname | Costello |
| Given Name | Mary |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Ireland |
| Year of Immigration | 1884 |
| Naturalization Status | Alien |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Township / Ward | Philadelphia City |
| Est. Birth Year | ~1869 |
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 1920 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Gertrude Costello | Daughter | — | 15 | ~1905 |
| Mary Costello | Daughter | — | 22 | ~1898 |
| Margaret Costello | Daughter | — | 17 | ~1903 |
| Elizabeth Costello | Daughter | — | 19 | ~1901 |
| John Costello | Head | — | 56 | ~1864 |
| John Costello | Son | — | 21 | ~1899 |
| Mary Costello | Spouse | — | 51 | ~1869 |
Census Appearances
1900
Philadelphia, Pennsylvania
Other, age 34
Philadelphia, Pennsylvania · implied b. ~1866 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Costello |
| Given Name | Mary |
| Relationship to Head | Servant |
| Sex | F |
| Color / Race | White |
| Age | 34 |
| Marital Status | Single |
| Birthplace | Ireland |
| Birth Month | Apr |
| Birth Year | 1866 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Servant |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1910
Philadelphia, Pennsylvania
Spouse, age 40
Philadelphia, Pennsylvania · implied b. ~1870 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Costello |
| Given Name | Mary |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Ireland |
| Years Married | 15 |
| Children Born | 5 |
| Children Living | 3 |
| Year of Immigration | 1890 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | none |
| Industry | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1920
Philadelphia, Pennsylvania
Spouse, age 51
Philadelphia, Pennsylvania · implied b. ~1869 — 7 household members
| Surname | Costello |
| Given Name | Mary |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Ireland |
| Year of Immigration | 1884 |
| Naturalization Status | Alien |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
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 (1900, 1910 and 1920) in Philadelphia, Pennsylvania, using XGBoost record linkage.
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This person
Anchor record
Mary Costello
Spouse · 1920 · age 51 · b. ~1869 · Pennsylvania
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1920 US Federal Census — Philadelphia, Pennsylvania
Open full size
1920 US Federal Census — Philadelphia, Pennsylvania
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu1646unit:0086)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Margaret Callahan | 40 | head | None | Pennsylvania |
| 2 | Sarah Callahan | 35 | sister | None | Pennsylvania |
| 3 | James Gallagher | 33 | brother-in-law | Dressmaker | Ireland |
| 4 | Bridget Gallagher | 31 | sister | Motorman | Ireland |
| 5 | Robert Stonaker | 35 | lodger | None | Pennsylvania |
| 6 | Daniel Gallagher | 19 | nephew | Baggage Man | Pennsylvania |
| 7 | Helena Gallagher | 0 | niece | — | Pennsylvania |
| 8 | Mary Flynn | 39 | head | — | Pennsylvania |
| 9 | Robert Jackson | 55 | head | Dressmaking | Pennsylvania |
| 10 | Ella Jackson | 50 | wife | Caterer | Virginia |
| 11 | Edna J. Pratt | 30 | daughter | None | Delaware |
| 12 | James Latney | 32 | servant | Stockgirl | Maryland |
| 13 | James Wilson | 14 | boarder | Caterers Helper | Virginia |
| 14 | Mary Latney | 50 | head | Bus Lady | Pennsylvania |
| 15 | Jackson Bovell | 45 | lodger | Day Work | Virginia |
| 16 | Louis Keeler | 35 | lodger | — | Maryland |
| 17 | Elizabeth Bovell | 30 | lodger | Laborer | Pennsylvania |
| 18 | Elizabeth Battle | 37 | lodger | Cookery | Georgia |
| 19 | Harvey Battle | 28 | lodger | General Housework | Maryland |
| 20 | George Cole | 37 | head | Laborer | Maryland |
| 21 | Eva E. Cole | 34 | wife | Repairman | Germany |
| 22 | Anna E. Cole | 13 | daughter | None | England |
| 23 | George E. Cole | 11 | son | — | Pennsylvania |
| 24 | Eleanor R. Cole | 8 | daughter | — | Pennsylvania |
| 25 | Ethel M. Cole | 1 | daughter | — | Pennsylvania |
| 26 | George W. Hartman | 22 | head | Bookkeeper | Pennsylvania |
| 27 | Mary Hartman | 21 | wife | None | Pennsylvania |
| 28 | George Hartman | 2 | son | — | Pennsylvania |
| 29 | Anna Reilly | 45 | mother-in-law | Laundress | Pennsylvania |
| 30 | Margaret Snyder | 50 | head | Assistant | Ireland |
| 31 | Helen Mckenna | 40 | sister | Seamstress | Pennsylvania |
| 32 | Helen Snyder | 19 | daughter | Bookkeeper | Pennsylvania |
| 33 | Margaret Snyder | 17 | daughter | Bookkeeper | New Jersey |
| 34 | Elizabeth Donohue | 25 | niece | Housekeeper | New Jersey |
| 35 | Katherine Donohue | 4 | grand-niece | — | Ireland |
| 36 | Margaret Donohue | 2 | grand-niece | — | Pennsylvania |
| 37 | Elizabeth Murray | 55 | roomer | — | Pennsylvania |
| 38 | Anna Hendrickson | 38 | head | Operator | Ireland |
| 39 | William Hendrickson | 13 | son | None | Ireland |
| 40 | Charles Hendrickson | 11 | son | — | Pennsylvania |
| 41 | Anna Hendrickson | 9 | daughter | — | Pennsylvania |
| 42 | Mary Hendrickson | 4 | daughter | — | Pennsylvania |
| 43 | Neil Sullivan | 38 | lodger | Ice Dealer | Pennsylvania |
| 44 | John Costello | 56 | head | Cooper | Pennsylvania |
| 45 | Mary Costello THIS PERSON | 51 | wife | None | Ireland |
| 46 | Mary Costello | 22 | daughter | Operator | Ireland |
| 47 | John Costello | 21 | son | Chauffeur | Ireland |
| 48 | Elizabeth Costello | 19 | daughter | Shirt Maker | Pennsylvania |
| 49 | Margaret Costello | 17 | daughter | Operator | Pennsylvania |
| 50 | Gertrude Costello | 15 | daughter | Messenger | Pennsylvania |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 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)