MK
Mary Keller — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Baltimore, Maryland
Our Model Tree links this Mary Keller across the 1920 and 1930 US Censuses in Baltimore, Maryland (XGBoost, ~Confirmed) — first a daughter (b.~1912), then head of a 13-person household.
Age 18
b. ~1912
Female
Daughter
Born: Maryland
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Baltimore, Maryland |
| Surname | Keller |
| Given Name | Mary C |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | 3Rd Election District Part |
| Est. Birth Year | ~1912 |
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 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Minnie Keller | Daughter | — | 15 | ~1915 |
| Clara Keller | Daughter | — | 13 | ~1917 |
| Mary Keller | Daughter | — | 18 | ~1912 |
| Robert Harrison | Head | — | 52 | ~1878 |
| Mary Keller | Other | — | 41 | ~1889 |
| Allen Nestor | Other | — | 41 | ~1889 |
| Barbara Bartling | Other | — | 55 | ~1875 |
| Arthur Keller | Other | — | 46 | ~1884 |
| Horace Harrison | Son | — | 7 | ~1923 |
| Richard Harrison | Son | — | 18 | ~1912 |
| Robert Harrison | Son | — | 22 | ~1908 |
| H Keller | Son | — | 20 | ~1910 |
| Virginia Harrison | Spouse | — | 44 | ~1886 |
Census Appearances
1920
Baltimore, Maryland
Daughter, age 7
Baltimore, Maryland · implied b. ~1913 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Keller |
| Given Name | Mary K. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Daughter, age 18
Baltimore, Maryland · implied b. ~1912 — 13 household members
| Surname | Keller |
| Given Name | Mary C |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
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 Keller across 2 US Census years (1920 and 1930) in Baltimore, Maryland, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Keller
Daughter · 1930 · age 18 · b. ~1912 · Maryland
★ You are viewing this record
Sibling
H Keller
Sibling · 1930 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Clara Keller
Sibling · 1930 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Harrison
Sibling · 1930 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Horace Harrison
Sibling · 1930 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Minnie Keller
Sibling · 1930 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Harrison
Sibling · 1930 · age 22
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 — Baltimore, Maryland
Open full size
1930 US Federal Census — Baltimore, Maryland
Page Contents
50 people indexed on this census page (ia:1930:15thcensus846unit:0022)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Melvin George | 18 | Brother | Farm Labor | Maryland |
| 52 | Garland H Thompson | 26 | Head | Chauffeur | Maryland |
| 53 | Martha V Thompson | 17 | Wife | — | Maryland |
| 54 | Robert B Harrison | 52 | Head | Captain | Maryland |
| 55 | Virginia W Harrison | 44 | Wife | — | Maryland |
| 56 | Robert B Jr Harrison | 22 | Son | Mechanic | Maryland |
| 57 | Richard B Harrison | 18 | Son | — | Maryland |
| 58 | Horace W Harrison | 7 | Son | — | Maryland |
| 59 | Barbara H Bartling | 55 | Sister | Poultryman | Maryland |
| 60 | Allen T Nestor | 41 | Boarder | Farm Manager | Kentucky |
| 61 | Arthur S Keller | 46 | Farm | Farmer | Maryland |
| 62 | Mary M Keller | 41 | — | — | Maryland |
| 63 | H Arthur Keller | 20 | Son | Chauffeur | Maryland |
| 64 | Mary C Keller THIS PERSON | 18 | Daughter | — | Maryland |
| 65 | Minnie E Keller | 15 | Daughter | — | Maryland |
| 66 | Clara R Keller | 13 | Daughter | — | Maryland |
| 67 | Nelson Simon | 50 | Head | Furnace | Maryland |
| 68 | Juanita Simon | 48 | Wife | — | Maryland |
| 69 | Constance Schultz | 23 | Servant | Maid | Germany |
| 70 | William H Clark | 43 | Head | Farm Manager | Maryland |
| 71 | Frances B Clark | 43 | Wife | — | Pennsylvania |
| 72 | Frances B Clark | 16 | Daughter | — | Maryland |
| 73 | Robert L Jones | 45 | Head | Lawyer | Maryland |
| 74 | Clara L Jones | 42 | Wife | — | Maryland |
| 75 | Margaret L Jones | 12 | Daughter | — | Maryland |
| 76 | Charlotte C Jones | 9 | Daughter | — | Maryland |
| 77 | Robert L Jr Jones | 3 | Son | — | Maryland |
| 78 | Francis C Cook | 33 | Head | Farm Manager | Pennsylvania |
| 79 | Margaret A Cook | 27 | Wife | — | Maryland |
| 80 | Francis C Cook | 7 | Son | — | Maryland |
| 81 | Joseph C Cook | 5 | Son | — | Maryland |
| 82 | F H Warden | 60 | Head | Proprietor | Maryland |
| 83 | Eleanor W Stewart | 38 | Daughter | — | Maryland |
| 84 | Edgar R Louson | 60 | Brother-in-law | Salesman | Maryland |
| 85 | Halyday S Compton | 33 | Head | Salesman | Virginia |
| 86 | Elsie L Compton | 28 | Wife | — | Maryland |
| 87 | Sally T Compton | 5 | Daughter | — | Maryland |
| 88 | Charles P Compton | 1 | Son | — | Maryland |
| 89 | Charles S Phelps | 56 | Father-in-law | — | Maryland |
| 90 | Matthew Atkinson | 49 | Head | Salesman | Maryland |
| 91 | Jessie P Atkinson | 35 | Wife | — | Georgia |
| 92 | Matthew S Atkinson | 4 | Son | — | Maryland |
| 93 | Eliza Washington | 65 | Servant | Cook | Virginia |
| 94 | Eliza B Atkinson | 70 | Head | — | Virginia |
| 95 | Lina B Atkinson | 43 | Daughter | Proprietor | Maryland |
| 96 | Katherine Proctor | 32 | Servant | Cook | Romania |
| 97 | Milton A Higgs | 57 | Head | Overseer | Maryland |
| 98 | Mary Higgs | 38 | Wife | — | Maryland |
| 99 | Dorothy T Higgs | 17 | Daughter | — | Maryland |
| 100 | Harry Schuddeboom | 47 | Head | Overseer | Holland |
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)