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Mary Berger — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Baltimore, Maryland
Our Model Tree links this Mary Berger across the 1930 and 1940 US Censuses in Baltimore, Maryland (XGBoost, ~Confirmed) — first a daughter (b.~1925), then head of a 8-person household.
Age 5
b. ~1925
Female
Daughter
Born: Maryland
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Baltimore, Maryland |
| Surname | Berger |
| Given Name | Mary C |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Colorado |
| Mother's Birthplace | Maryland |
| Additional Details | |
| Can Read/Write | No |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1925 |
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.
8 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Robert Porter | Other | — | 5 | ~1925 |
| Alvin Berger | Son | — | 2 | ~1928 |
| Mary Berger | Daughter | — | 5 | ~1925 |
| Clyde Berger | Head | — | 39 | ~1891 |
| Mary Berger | Spouse | — | 35 | ~1895 |
| Joseph Berger | Son | — | 7 | ~1923 |
| John Berger | Son | — | 9 | ~1921 |
| Mary Bain | Other | — | 85 | ~1845 |
Census Appearances
1930
Baltimore, Maryland
Daughter, age 5
Baltimore, Maryland · implied b. ~1925 — 8 household members
| Surname | Berger |
| Given Name | Mary C |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Colorado |
| Mother's Birthplace | Maryland |
| Can Read/Write | No |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Other, age 16
Baltimore-City-County, Maryland · implied b. ~1924 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Burger |
| Given Name | Mary E. |
| Relationship to Head | Niece |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Income (1939) | 0 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same place |
| 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 Berger across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Berger
Daughter · 1930 · age 5 · b. ~1925 · Maryland
★ You are viewing this record
Sibling
Alvin Berger
Sibling · 1930 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Berger
Sibling · 1930 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Berger
Sibling · 1930 · age 7
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
27 people indexed on this census page (ia:1930:15thcensus869unit:0409)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Charles J Isaphaugh | 56 | Head | Engineer | Maryland |
| 2 | Mary C Isaphaugh | 37 | Wife | — | Maryland |
| 3 | Ruth C Isaphaugh | 11 | Daughter | — | Maryland |
| 4 | Thomas Isaphaugh | 9 | Son | — | Maryland |
| 5 | Walter W Isaphaugh | 2 | Son | — | Maryland |
| 6 | Mary E Isaphaugh | 1 | Daughter | — | Maryland |
| 7 | Robert W Porter | 35 | Head | Paper Hanger | Maryland |
| 8 | May E Porter | 26 | Wife | — | Maryland |
| 9 | Edward J Porter | 8 | Son | — | Maryland |
| 10 | Charles U Porter | 6 | Son | — | Maryland |
| 11 | Adelaide E Porter | 4 | Daughter | — | Maryland |
| 12 | Harry A Porter | 1 | Son | — | Maryland |
| 13 | James J Griffin | 47 | Head | Engineer | Massachusetts |
| 14 | Avis Griffin | 47 | Wife | — | Illinois |
| 15 | James J Jr Griffin | 15 | Son | — | Illinois |
| 16 | John E Earkenson | 71 | Head | Secretary | Maryland |
| 17 | Sallie C Earkenson | 67 | Wife | — | Maryland |
| 18 | Prior Earkenson | 39 | Son | — | Maryland |
| 19 | Cecelia N Earkenson | 32 | Daughter | Proprietor | Maryland |
| 20 | Clyde G Berger | 39 | Head | Engineer | Colorado |
| 21 | Mary E Berger | 35 | Wife | — | Maryland |
| 22 | John E Berger | 9 | Son | — | Pennsylvania |
| 23 | Joseph H Berger | 7 | Son | — | Maryland |
| 24 | Mary C Berger THIS PERSON | 5 | Daughter | — | Maryland |
| 25 | Alvin M Berger | 2 | Son | — | Maryland |
| 26 | Mary E Bain | 85 | Aunt | — | Pennsylvania |
| 27 | Robert E Porter | 5 | Lodger | — | Maryland |
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)