MP
Mary Pollock — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this Mary Pollock across the 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed) — first a daughter (b.~1930), then head of a 5-person household.
Age 10
b. ~1930
Female
Daughter
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Pollock |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Additional Details | |
| Highest Grade | No 3 |
| 1935 Residence | Same house |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1930 |
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 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Nellie Pollock | Spouse | — | 38 | ~1902 |
| Felix Pollock | Head | — | 46 | ~1894 |
| James Pollock | Son | — | 6 | ~1934 |
| Mary Pollock | Daughter | — | 10 | ~1930 |
| Felix Pollock | Son | — | 18 | ~1922 |
Census Appearances
1930
Baltimore, Maryland
Daughter, age 1
Baltimore, Maryland · implied b. ~1929 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Pollack |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| 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 |
1940
Baltimore-City-County, Maryland
Daughter, age 10
Baltimore-City-County, Maryland · implied b. ~1930 — 5 household members
| Surname | Pollock |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Highest Grade | No 3 |
| 1935 Residence | Same house |
| 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 Pollock across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Pollock
Daughter · 1940 · age 10 · b. ~1930 · Maryland
★ You are viewing this record
Sibling
James Pollock
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Felix Pollock
Sibling · 1940 · age 18
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
1940 US Federal Census — Baltimore-City-County, Maryland
Open full size
1940 US Federal Census — Baltimore-City-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01513-00179)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Marjorie Ann Horneman | 5 | daughter | — | Maryland |
| 2 | Arthur Thompson | 44 | head | Ship Joiner | Maryland |
| 3 | Esther Thompson | 38 | wife | — | Maryland |
| 4 | Jeannette Thompson | 18 | daughter | — | Maryland |
| 5 | Doris Thompson | 16 | daughter | — | Maryland |
| 6 | Gebhard Keys | 47 | head | Chief Examiner | Maryland |
| 7 | Ethel Keys | 42 | wife | — | Maryland |
| 8 | E. Vernon Zabel | 35 | head | Bookkeeper | Maryland |
| 9 | Gretchen E. Zabel | 30 | wife | — | Maryland |
| 10 | Jean Ellen Zabel | 5 | daughter | — | Maryland |
| 11 | Emma L. Fanning | 61 | head | — | Maryland |
| 12 | Salvadore Maggio | 32 | head | Clerk | Maryland |
| 13 | Anna Maggio | 24 | wife | — | Maryland |
| 14 | Charles Stokes | 21 | head | Machinist | Maryland |
| 15 | Velma Stokes | 18 | wife | Saleslady | Maryland |
| 16 | Felix Pollock | 46 | head | Foreman | Maryland |
| 17 | Nellie Pollock | 38 | wife | — | Maryland |
| 18 | Felix Jr. Pollock | 18 | son | Clerk | Maryland |
| 19 | Mary Pollock THIS PERSON | 10 | daughter | — | Maryland |
| 20 | James Pollock | 6 | son | — | Maryland |
| 21 | Frank B. Weber | 36 | head | Proprietor | Maryland |
| 22 | Camilla Weber | 36 | wife | — | Maryland |
| 23 | Frank B. Jr. Weber | 16 | son | Clerk | Maryland |
| 24 | Doris B. Weber | 11 | daughter | — | Maryland |
| 25 | Mary A. Harlow | 69 | mother-in-law | — | Maryland |
| 26 | Lula Swift | 69 | aunt | — | Maryland |
| 27 | Charles Delcher | 57 | head | Machinist | Maryland |
| 28 | Attie Delcher | 46 | wife | — | Delaware |
| 29 | Perry C. Leyland | 24 | head | Cook + Counterman | Maryland |
| 30 | Joan P. Leyland | 25 | wife | — | Massachusetts |
| 31 | Mary Bisciotti | 56 | mother-in-law | Saleslady | Massachusetts |
| 32 | Wade H. Creswell | 37 | head | Accountant | Maryland |
| 33 | Grace Creswell | 39 | wife | — | Maryland |
| 34 | Grace Elizabeth Creswell | 9 | daughter | — | Maryland |
| 35 | Marvin W. Patrick | 42 | head | Machinist | South Carolina |
| 36 | Lula L. Patrick | 42 | wife | — | Maryland |
| 37 | Jesse Wells Patrick | 18 | son | — | Maryland |
| 38 | Evelyn Virginia Patrick | 16 | daughter | — | Maryland |
| 39 | Hunter James Waters | 35 | head | Machinist | Maryland |
| 40 | Marian L. Waters | 32 | wife | — | Maryland |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 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)