MC
Mary Cohen — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Baltimore, Maryland
Our Model Tree links this Mary Cohen across the 1930 and 1940 US Censuses in Baltimore, Maryland (XGBoost, ~Confirmed) — first a daughter (b.~1916), then head of a 8-person household.
Age 14
b. ~1916
Female
Daughter
Born: Maryland
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Baltimore, Maryland |
| Surname | Cohen |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Russia |
| Mother's Birthplace | Russia |
| Additional Details | |
| Occupation | Operator |
| Industry | Factory |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Operator |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1916 |
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 |
|---|---|---|---|---|
| Ester Cohen | Daughter | — | 11 | ~1919 |
| Harry Cohen | Head | — | 56 | ~1874 |
| Nellie Cohen | Daughter | — | 33 | ~1897 |
| Rose Cohen | Daughter | — | 17 | ~1913 |
| Mary Cohen | Daughter | — | 14 | ~1916 |
| Morris Cohen | Son | — | 23 | ~1907 |
| Elsie Cohen | Spouse | — | 53 | ~1877 |
| Charles Cohen | Son | — | 31 | ~1899 |
Census Appearances
1930
Baltimore, Maryland
Daughter, age 14
Baltimore, Maryland · implied b. ~1916 — 8 household members
| Surname | Cohen |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Russia |
| Mother's Birthplace | Russia |
| Occupation | Operator |
| Industry | Factory |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Other, age 25
Baltimore-City-County, Maryland · implied b. ~1915 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cohen |
| Given Name | Margaret |
| Relationship to Head | Daughter-in-law |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Class of Worker | 0 |
| Highest Grade | 5 |
| 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 Cohen across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Cohen
Daughter · 1930 · age 14 · b. ~1916 · Maryland
★ You are viewing this record
Sibling
Charles Cohen
Sibling · 1930 · age 31
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Nellie Cohen
Sibling · 1930 · age 33
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ester Cohen
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rose Cohen
Sibling · 1930 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Morris Cohen
Sibling · 1930 · age 23
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
32 people indexed on this census page (ia:1930:15thcensus850unit:0883)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Esther Rosengweig | 21 | Daughter | — | Maryland |
| 2 | Annie Lundh | 50 | Head | — | North Carolina |
| 3 | Joseph Ginsberg | 55 | Head | Salesman | Russia |
| 4 | Annie Ginsberg | 54 | Wife | — | Russia |
| 5 | Ernest Ginsberg | 21 | Son | Upholsterer | Roumania |
| 6 | Isaac Ginsberg | 18 | Son | — | Russia |
| 7 | Samuel Ginsberg | 23 | Son | Waiter | Russia |
| 8 | Sarah Ginsberg | 19 | Wife | — | Russia |
| 9 | Ginsberg | None | — | — | Maryland |
| 10 | Annie Ginsberg | 19 | Sister | Operator | Russia |
| 11 | Isaac Leidman | 59 | Head | Cabinet Maker | Russia |
| 12 | Anna Leidman | 55 | Wife | — | Russia |
| 13 | Benjamin Leidman | 27 | Son | Upholsterer | Russia |
| 14 | Rose Leidman | 21 | Daughter | — | Russia |
| 15 | Harry Cohen | 56 | Head | Tailor | Russia |
| 16 | Elsie Cohen | 53 | Wife | — | Russia |
| 17 | Nellie Cohen | 33 | Daughter | Cigar Maker | Russia |
| 18 | Charles Cohen | 31 | Son | Salesman | Russia |
| 19 | Morris Cohen | 23 | Son | Server | Russia |
| 20 | Mary Cohen THIS PERSON | 14 | Daughter | Operator | Maryland |
| 21 | Rose Cohen | 17 | Daughter | Operator | Maryland |
| 22 | Ester Cohen | 11 | Daughter | — | Maryland |
| 23 | Morris Ehler | 53 | Head | Tailor | Russia |
| 24 | Lena Ehler | 56 | Wife | — | Russia |
| 25 | Albert Ehler | 29 | Son | Clerk | Maryland |
| 26 | Harry Ehler | 23 | Son | Elevator Boy | Maryland |
| 27 | August Gumpungua | 20 | Boarder | Lithographer | Pennsylvania |
| 28 | Milton Harris | 25 | Boarder | Mechanic | Virginia |
| 29 | Samuel Luchman | 42 | Head | Operator | Maryland |
| 30 | Bessie Luchman | 35 | Wife | — | Maryland |
| 31 | Catherine Luchman | 18 | Daughter | Clerk | Maryland |
| 32 | Marie Luchman | 20 | Boarder | Clerk | 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)