MP
Mary Pratt — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Baltimore, Maryland
Our Model Tree links this Mary Pratt across the 1920 and 1930 US Censuses in Baltimore, Maryland (XGBoost, ~Confirmed) — first a daughter (b.~1915), then head of a 8-person household.
Age 15
b. ~1915
Female
Daughter
Born: Maryland
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Baltimore, Maryland |
| Surname | Pratt |
| Given Name | Mary V. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| 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 | 9Th District Part |
| Est. Birth Year | ~1915 |
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 |
|---|---|---|---|---|
| Catherine Pratt | Daughter | — | 18 | ~1912 |
| Mary Pratt | Daughter | — | 15 | ~1915 |
| Eileen Pratt | Daughter | — | 13 | ~1917 |
| Thomas Pratt | Head | — | 57 | ~1873 |
| Caroline Pratt | Other | — | 52 | ~1878 |
| William Pratt | Son | — | 24 | ~1906 |
| Carroll Pratt | Son | — | 20 | ~1910 |
| Thomas Pratt | Son | — | 22 | ~1908 |
Census Appearances
1920
Baltimore, Maryland
Daughter, age 5
Baltimore, Maryland · implied b. ~1915 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Pratt |
| Given Name | Mary V. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| 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 15
Baltimore, Maryland · implied b. ~1915 — 8 household members
| Surname | Pratt |
| Given Name | Mary V. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| 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 Pratt across 2 US Census years (1920 and 1930) in Baltimore, Maryland, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Pratt
Daughter · 1930 · age 15 · b. ~1915 · Maryland
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Sibling
William Pratt
Sibling · 1930 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Pratt
Sibling · 1930 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eileen Pratt
Sibling · 1930 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Carroll Pratt
Sibling · 1930 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Pratt
Sibling · 1930 · 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
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:0887)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Edwin A. Dempsey | 42 | Head | Sales Manager | Maryland |
| 2 | Mary M. Dempsey | 38 | Wife-H | — | Maryland |
| 3 | Mildred M. Dempsey | 9 | Daughter | — | Maryland |
| 4 | Elizabeth R. Dempsey | 7 | Daughter | — | Maryland |
| 5 | Margaret Kramer | 75 | Mother-in-law | — | Germany |
| 6 | Ray D. Britton | 49 | Head | Recording Clerk | Maryland |
| 7 | Mabel G. Britton | 38 | Wife-H | — | Maryland |
| 8 | Ray Britton | 15 | Son | — | Maryland |
| 9 | William D. Britton | 13 | Son | — | Maryland |
| 10 | Stanton M. Britton | 7 | Son | — | Maryland |
| 11 | Gardner D. Britton | 6 | Son | — | Maryland |
| 12 | Hazel G. Britton | 1 | Daughter | — | Maryland |
| 13 | Thomas S. Green | 71 | Father-in-law | Gardener | Maryland |
| 14 | Anna G. Tracey | 51 | Lodger | — | Maryland |
| 15 | Arthur R.C. Gorman | 51 | Head | Mail Clerk | Maryland |
| 16 | Myrtle W. Gorman | 46 | Wife-H | Information Clerk | Maryland |
| 17 | Alice Curran | 64 | Mother-in-law | — | Maryland |
| 18 | Edward Trapp | 42 | Head | Foreman On Roads | Maryland |
| 19 | Ethel G. Trapp | 38 | Wife-H | — | Maryland |
| 20 | Mary G. Trapp | 11 | Daughter | — | Maryland |
| 21 | Edward Trapp | 9 | Son | — | Maryland |
| 22 | John H. Trapp | 1 | Son | — | Maryland |
| 23 | Howell J. Corman | 51 | Head | Builder | Maryland |
| 24 | Clara L. Corman | 49 | Wife-H | — | Maryland |
| 25 | Mildred R. Corman | 18 | Daughter | — | Maryland |
| 26 | Harry B.G. Green | 40 | Head | Superintendent | Maryland |
| 27 | Mildred C. Green | 38 | Wife-H | — | Maryland |
| 28 | Rosa E. Allen | 65 | Head | — | Maryland |
| 29 | Edward Russell Allen | 24 | Son | Civil Engineer | Maryland |
| 30 | Roland M. Wagner | 28 | Son-in-law | Claim Adjuster | New York |
| 31 | Miriam A. Wagner | 26 | Daughter | — | Maryland |
| 32 | Raymond R. Tilner | 27 | Head | Salesman | Maryland |
| 33 | Sophia S. Tilner | 25 | Wife-H | — | Maryland |
| 34 | William J. Smith | 72 | Head | Lawyer | Maryland |
| 35 | Cornelia E. Smith | 66 | Wife-H | — | Maryland |
| 36 | Roy J. Smith | 37 | Son | Doctor | Maryland |
| 37 | Sarah E. Anderson | 58 | Lodger | — | Maryland |
| 38 | Yook Lee | 50 | Hired man | Servant | Maryland |
| 39 | Thomas F. Pratt | 57 | Head | Mariner | Maryland |
| 40 | Caroline E. Pratt | 52 | Wife-H | — | Maryland |
| 41 | William E. Pratt | 24 | Son | Mariner | Maryland |
| 42 | Thomas F. Jr. Pratt | 22 | Son | Loan Clerk | Maryland |
| 43 | Carroll F. Pratt | 20 | Son | — | Maryland |
| 44 | Catherine P. Pratt | 18 | Daughter | — | Maryland |
| 45 | Mary V. Pratt THIS PERSON | 15 | Daughter | — | Maryland |
| 46 | Eileen J. Pratt | 13 | Daughter | — | Maryland |
| 47 | Joseph H. Dutton | 44 | Head | Seaman | Virginia |
| 48 | Delilah Dutton | 40 | Wife-H | — | Maryland |
| 49 | John E. Dutton | 17 | Son | — | Maryland |
| 50 | Charles F. Dutton | 14 | Son | — | 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)