MK
Mary Kowalski — 1910 US Census Record
Linked across censuses1910 United States Federal Census · Mercer, New Jersey
Our Model Tree links this Mary Kowalski across the 1910 and 1920 US Censuses in Mercer, New Jersey (XGBoost, ~Confirmed) — first a spouse (b.~1870), then head of a 13-person household.
Age 40
b. ~1870
Female
Spouse
Born: Poland
Married
1910 Census Record Details
| Census Year | 1910 |
| Location | Mercer, New Jersey |
| Surname | Kowalski |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Poland |
| Years Married | 16 |
| Children Born | 0 |
| Children Living | 0 |
| Year of Immigration | 1882 |
| Father's Birthplace | Poland |
| Mother's Birthplace | Poland |
| Additional Details | |
| Birth Country | Poland |
| Birthplace (normalized) | poland |
| Township / Ward | Trenton City |
| Est. Birth Year | ~1870 |
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.
13 people recorded at the same address in the 1910 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Tony Kowalski | Son | — | 5 | ~1905 |
| Joseph Kowalski | Other | — | 30 | ~1880 |
| Joseph Kowalski | Son | — | 2 | ~1908 |
| John Kowalski | Son | — | 12 | ~1898 |
| Margaret Kowalski | Other | — | 7 | ~1903 |
| Alfred Kowalski | Son | — | 10 | ~1900 |
| Frank Kowalski | Son | — | ~1910 | |
| Elizabeth Kowalski | Other | — | 14 | ~1896 |
| Victoria Kowalski | Other | — | 18 | ~1892 |
| Victor Kowalski | Son | — | 7 | ~1903 |
| Mary Kowalski | Spouse | — | 40 | ~1870 |
| William Kowalski | Head | — | 43 | ~1867 |
| William Kowalski | Son | — | 14 | ~1896 |
Census Appearances
1910
Mercer, New …
Spouse, age 40
Mercer, New Jersey · implied b. ~1870 — 13 household members
| Surname | Kowalski |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Poland |
| Years Married | 16 |
| Children Born | 0 |
| Children Living | 0 |
| Year of Immigration | 1882 |
| Father's Birthplace | Poland |
| Mother's Birthplace | Poland |
| Birth Country | Poland |
| Birthplace (normalized) | poland |
1920
Mercer, New …
Spouse, age 51
Mercer, New Jersey · implied b. ~1869 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kowalsky |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Poland |
| Year of Immigration | 1881 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Poland |
| Mother's Birthplace | Poland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Polish |
| Birth Country | Poland |
| Birthplace (normalized) | poland |
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 Kowalski across 2 US Census years (1910 and 1920) in Mercer, New Jersey, using XGBoost record linkage.
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This person
Anchor record
Mary Kowalski
Spouse · 1910 · age 40 · b. ~1870 · New Jersey
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1910 US Federal Census — Mercer, New Jersey
Open full size
1910 US Federal Census — Mercer, New Jersey
Page Contents
50 people indexed on this census page (ia:1910:13thcensus1910po650unit:0601)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Stella Kowalski | 17 | Daughter | — | Poland |
| 52 | Mary Kowalski | 15 | Daughter | — | Poland |
| 53 | John Kowalski | 13 | Son | — | Michigan |
| 54 | Edward Kowalski | 11 | Son | — | Michigan |
| 55 | Helen Kowalski | 9 | Daughter | — | Michigan |
| 56 | William Kowalski | 43 | Head | Laborer | Poland |
| 57 | Mary Kowalski THIS PERSON | 40 | Wife | — | Poland |
| 58 | William Kowalski | 14 | Son | — | Michigan |
| 59 | John Kowalski | 12 | Son | — | Michigan |
| 60 | Alfred Kowalski | 10 | Son | Laborer | Michigan |
| 61 | Victor Kowalski | 7 | Son | — | Michigan |
| 62 | Tony Kowalski | 5 | Son | — | Michigan |
| 63 | Joseph Kowalski | 2 | Son | — | Michigan |
| 64 | Frank Kowalski | 0 | Son | — | Michigan |
| 65 | Joseph Kowalski | 30 | Boarder | Laborer | Indiana |
| 66 | Victoria Kowalski | 18 | Boarder | — | Michigan |
| 67 | Elizabeth Kowalski | 14 | Boarder | — | Michigan |
| 68 | Margaret Kowalski | 7 | Boarder | — | Michigan |
| 69 | Myrtle Reynolds | 47 | Head | Watchman | Michigan |
| 70 | Grace Reynolds | 45 | Wife | — | Michigan |
| 71 | Hazel Reynolds | 10 | Daughter | — | Michigan |
| 72 | John Reynolds | 8 | Son | Mail Carrier | Michigan |
| 73 | James Tagg | 60 | Head | Laborer | Michigan |
| 74 | Mary Tagg | 56 | Wife | — | Michigan |
| 75 | John Tagg | 28 | Son | Laborer | Michigan |
| 76 | Ralph Tagg | 16 | Son | — | Michigan |
| 77 | Pauline Tagg | 42 | Head | Laundry | Michigan |
| 78 | Mary Tagg | 21 | Daughter | Laundry | Michigan |
| 79 | Alice Tagg | 18 | Daughter | Shirt Factory | Michigan |
| 80 | Herbert Tagg | 20 | Son | Shirt Factory | Michigan |
| 81 | Ray Tagg | 12 | Son | — | Michigan |
| 82 | Arthur Tagg | 11 | Son | — | Michigan |
| 83 | Frank Tagg | 31 | Head | Laborer | Michigan |
| 84 | Nelly Tagg | 30 | Wife | — | Michigan |
| 85 | Isabella Tagg | 10 | Daughter | — | Michigan |
| 86 | George Tagg | 24 | Boarder | Laborer | Michigan |
| 87 | Martha Vandine | 51 | Head | — | Canada |
| 88 | John Vandine | 23 | Son | Laborer | Canada |
| 89 | William Vandine | 18 | Son | — | Michigan |
| 90 | Frank Tibbets | 45 | Head | Laborer | Canada |
| 91 | Lulu Tibbets | 40 | Wife | — | Michigan |
| 92 | Delta Tibbets | 17 | Daughter | — | Michigan |
| 93 | Irene Tibbets | 10 | Daughter | — | Michigan |
| 94 | James Tibbets | 73 | Brother | — | Canada |
| 95 | Eli Tibbets | 41 | Head | Brakeman | Michigan |
| 96 | Mabel Tibbets | 30 | Wife | — | Michigan |
| 97 | Charles Tibbets | 27 | Head | Conductor | Michigan |
| 98 | Alice Tibbets | 24 | Wife | — | Michigan |
| 99 | Raymond Tibbets | 4 | Son | — | Michigan |
| 100 | Lulu Tibbets | 1 | Daughter | — | Michigan |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1910 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)