MC
Mary Costello — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Essex, Massachusetts
Our Model Tree links this Mary Costello across the 1900, 1910 and 1920 US Censuses in Essex, Massachusetts (XGBoost, ~Confirmed) — first a head (b.~1868), then head of a 5-person household.
Age 52
b. ~1868
Female
Head
Born: Ireland
Widowed
1920 Census Record Details
| Census Year | 1920 |
| Location | Essex, Massachusetts |
| Surname | Costello |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 52 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Year of Immigration | 1880 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth Country | Ireland |
| Year of Naturalization | 1885 |
| Birthplace (normalized) | ireland |
| Township / Ward | Lawrence City |
| Est. Birth Year | ~1868 |
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.
5 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Eleanor Costello | Daughter | — | 19 | ~1901 |
| Mary Costello | Head | — | 52 | ~1868 |
| Edward Costello | Son | — | 26 | ~1894 |
| Dan Costello | Son | — | 25 | ~1895 |
| John Costello | Son | — | 23 | ~1897 |
Census Appearances
1900
Essex, Massachusetts
Head, age 33
Essex, Massachusetts · implied b. ~1867 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Costello |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 33 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Birth Month | May |
| Birth Year | 1867 |
| Year of Immigration | 1887 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1910
Essex, Massachusetts
Head, age 42
Essex, Massachusetts · implied b. ~1868 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Costello |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 42 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Children Born | 8 |
| Children Living | 4 |
| Year of Immigration | 1886 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1920
Essex, Massachusetts
Head, age 52
Essex, Massachusetts · implied b. ~1868 — 5 household members
| Surname | Costello |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 52 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Year of Immigration | 1880 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth Country | Ireland |
| Year of Naturalization | 1885 |
| 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 Essex, Massachusetts, using XGBoost record linkage.
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This person
Anchor record
Mary Costello
Head · 1920 · age 52 · b. ~1868 · Massachusetts
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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 — Essex, Massachusetts
Open full size
1920 US Federal Census — Essex, Massachusetts
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu692unit:0259)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | John Sheck | 28 | Boarder | Weaver | Galicia |
| 52 | Catherine Sheck | 23 | Boarder | Weaver | Galicia |
| 53 | Andrew Basa | 24 | Head | Weaver | Galicia |
| 54 | Regina Basa | 24 | Wife | — | Galicia |
| 55 | Amy Basa | 2 | Daughter | — | Massachusetts |
| 56 | Amelia Basa | 0 | Daughter | — | Massachusetts |
| 57 | Sebastian Gluzak | 35 | Boarder | Weaver | Galicia |
| 58 | Sophia Widela | 26 | Boarder | Spinner | Galicia |
| 59 | Sophia Kozak | 47 | Boarder | Dresser | Galicia |
| 60 | William Macdonald | 27 | Head | Machinist | Massachusetts |
| 61 | Agnes Macdonald | 19 | Wife | — | Massachusetts |
| 62 | Mary Esty | 21 | Sister-in-law | Twister | Massachusetts |
| 63 | Fred Bradgon | 41 | Head | Helper | Maine |
| 64 | Alice Bradgon | 29 | Wife | — | Massachusetts |
| 65 | Blanche Bradgon | 10 | Daughter | — | Massachusetts |
| 66 | Delphine Loftus | 41 | Head | — | Massachusetts |
| 67 | Gertrude Loftus | 20 | Daughter | Mender | Massachusetts |
| 68 | Viola Loftus | 19 | Daughter | Sorter | Massachusetts |
| 69 | George Loftus | 17 | Son | Sorter | Massachusetts |
| 70 | Grace Loftus | 15 | Daughter | Weaver | Massachusetts |
| 71 | James Loftus | 13 | Son | — | Massachusetts |
| 72 | Patrick Langan | 50 | Head | Helper | Ireland |
| 73 | Julia Langan | 48 | Wife | — | Ireland |
| 74 | Mary Langan | 29 | Daughter | Spinner | Massachusetts |
| 75 | Agnes Langan | 21 | Daughter | Twister | Massachusetts |
| 76 | Mary Costello THIS PERSON | 52 | Head | — | Ireland |
| 77 | Edward Costello | 26 | Son | Clerk Master | Massachusetts |
| 78 | Dan Costello | 25 | Son | — | Massachusetts |
| 79 | John Costello | 23 | Son | — | Massachusetts |
| 80 | Eleanor Costello | 19 | Daughter | — | Massachusetts |
| 81 | Ambrose Gurry | 51 | Head | Molder | Ireland |
| 82 | Julia Gurry | 54 | Wife | Sorter | Massachusetts |
| 83 | Alexander Harvey | 27 | Head | Molder | Scotland |
| 84 | Catherine Harvey | 26 | Wife | Spinner | Massachusetts |
| 85 | Julia Harvey | 8 | Daughter | — | Massachusetts |
| 86 | John Harvey | 7 | Son | — | Massachusetts |
| 87 | James Harvey | 3 | Son | — | Massachusetts |
| 88 | Alexander Harvey | 1 | Son | — | Massachusetts |
| 89 | Alfred Clegg | 37 | Head | Machinist | England |
| 90 | Beatrice Clegg | 33 | Wife | — | England |
| 91 | Florence Clegg | 3 | Daughter | — | Massachusetts |
| 92 | Rose Janiciewicze | 55 | Head | Comber | Lithuania |
| 93 | Mary Janiciewicze | 57 | Sister | Comber | Lithuania |
| 94 | Edward Grace | 55 | Head | Molder | Ireland |
| 95 | Edward Grace | 22 | Son | Machinist | Massachusetts |
| 96 | Bessie Grace | 19 | Daughter | Stenographer | Ireland |
| 97 | John Featherstone | 35 | Head | Conductor | Massachusetts |
| 98 | Mary Featherstone | 62 | Mother | — | Ireland |
| 99 | Patrick Devlin | 47 | Head | Weaver | Ireland |
| 100 | William Devlin | 43 | Brother | Weaver | Ireland |
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)