MK
Mary Kerr — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Baltimore, Maryland
Our Model Tree links this Mary Kerr across the 1920, 1930 and 1940 US Censuses in Baltimore, Maryland (XGBoost, ~Confirmed) — first a head (b.~1861), then head of a 5-person household.
Age 59
b. ~1861
Female
Head
Born: Scotland
Widowed
1920 Census Record Details
| Census Year | 1920 |
| Location | Baltimore, Maryland |
| Surname | Kerr |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 59 |
| Marital Status | Widowed |
| Birthplace | Scotland |
| Year of Immigration | 1890 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Additional Details | |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth Country | Scotland |
| Year of Naturalization | 1894 |
| Birthplace (normalized) | scotland |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1861 |
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 |
|---|---|---|---|---|
| John Kerr | Son | — | 33 | ~1887 |
| Mary Kerr | Head | — | 59 | ~1861 |
| Leo Kerr | Son | — | 23 | ~1897 |
| Teresa Kerr | Daughter | — | 20 | ~1900 |
| William Kerr | Other | — | 11 | ~1909 |
Census Appearances
1920
Baltimore, Maryland
Head, age 59
Baltimore, Maryland · implied b. ~1861 — 5 household members
| Surname | Kerr |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 59 |
| Marital Status | Widowed |
| Birthplace | Scotland |
| Year of Immigration | 1890 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth Country | Scotland |
| Year of Naturalization | 1894 |
| Birthplace (normalized) | scotland |
1930
Baltimore, Maryland
Other, age 65
Baltimore, Maryland · implied b. ~1865 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kerr |
| Given Name | Mary |
| Relationship to Head | Mother-in-law |
| Sex | F |
| Color / Race | White |
| Age | 65 |
| Marital Status | Widowed |
| Birthplace | Scotland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1891 |
| Age at First Marriage | 16 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1940
Baltimore-City-County, Maryland
Other, age 76
Baltimore-City-County, Maryland · implied b. ~1864 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kerr |
| Given Name | Mary |
| Relationship to Head | Mother-in-law |
| Sex | F |
| Color / Race | White |
| Age | 76 |
| Marital Status | Widowed |
| Birthplace | Scotland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Naturalization Status | Naturalized |
| Industry | U |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
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 Kerr across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Kerr
Head · 1920 · age 59 · b. ~1861 · Maryland
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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 — Baltimore, Maryland
Open full size
1920 US Federal Census — Baltimore, Maryland
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu668unit:0027)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Albert Walker | 58 | Head | Foreman | Sweden |
| 52 | Julia Walker | 47 | Wife | — | Germany |
| 53 | Agatha Walker | 23 | Daughter | Labor | Maryland |
| 54 | William Walker | 21 | Son | Labor | Maryland |
| 55 | Charles Walker | 17 | Son | — | Maryland |
| 56 | Frederick Walker | 15 | Son | — | Maryland |
| 57 | Mamie Walker | 15 | Daughter | — | Maryland |
| 58 | Gertrude Walker | 13 | Daughter | — | Maryland |
| 59 | Mary Kerr THIS PERSON | 59 | Head | — | Scotland |
| 60 | John Kerr | 33 | Son | Foreman | Scotland |
| 61 | Leo Kerr | 23 | Son | Ship Fitter | Maryland |
| 62 | Teresa Kerr | 20 | Daughter | Operator | Maryland |
| 63 | William Kerr | 11 | Grandson | — | Maryland |
| 64 | — | None | — | — | — |
| 65 | — | None | — | — | — |
| 66 | — | None | — | — | — |
| 67 | — | None | — | — | — |
| 68 | — | None | — | — | — |
| 69 | — | None | — | — | — |
| 70 | — | 50 | — | Labor | — |
| 71 | — | 41 | Head | — | Germany |
| 72 | William | 19 | Son | Ship Fitter | Maryland |
| 73 | — | 13 | Daughter | — | Maryland |
| 74 | Mabel Miller | 39 | Head | — | Germany |
| 75 | Henry Rinek | 48 | Head | Helper | Germany |
| 76 | William Rinek | 14 | Son | — | Maryland |
| 77 | Emma Rinek | 12 | Daughter | — | Maryland |
| 78 | Henry Rinek | 10 | Son | — | Maryland |
| 79 | Frederick Ottenson | 52 | Head | Labor | Sweden |
| 80 | Hilda Ottenson | 45 | Wife | — | Sweden |
| 81 | Irene Ottenson | 22 | Daughter | Operator | Maryland |
| 82 | Olga Ottenson | 17 | Daughter | Clerk | Maryland |
| 83 | George Lee | 52 | Head | Sailor | Maryland |
| 84 | Mary Lee | 20 | Daughter | — | Maryland |
| 85 | Charles Lee | 6 | Son | — | Maryland |
| 86 | Thomas Lee | 3 | Son | — | Maryland |
| 87 | Sally Whittington | 55 | Mother-in-law | — | Maryland |
| 88 | Luke Gorman | 55 | Head | Clerk | Ireland |
| 89 | Emma Gorman | 54 | Wife | — | Maryland |
| 90 | Mary Gorman | 24 | Daughter | — | Maryland |
| 91 | Emma Gorman | 22 | Daughter | — | Maryland |
| 92 | Charles Gorman | 12 | Son | — | Maryland |
| 93 | Patrick Gorman | 47 | Brother | Labor | Ireland |
| 94 | Joseph Flanagan | 40 | Head | — | Maryland |
| 95 | Ella Flanagan | 38 | Wife | — | Maryland |
| 96 | Lawrence Flanagan | 5 | Son | — | Maryland |
| 97 | Joseph Flanagan | 3 | Son | — | Maryland |
| 98 | John Flanagan | 1 | Son | — | Maryland |
| 99 | Stephen Eichen | 38 | Head | Foreman | Maryland |
| 100 | Catherine Eichen | 36 | Wife | — | Maryland |
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)