WP
William Pratt — 1940 US Census Record
Model Tree available1940 United States Federal Census · Baltimore-County, Maryland
Our Model Tree links this William Pratt across the 1920, 1930 and 1940 US Censuses in Baltimore-County, Maryland (XGBoost, ~Confirmed), with identified parents Thomas & Caroline — first a son (b.~1906), then head of a 5-person household.
Age 34
b. ~1906
Male
Son
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-County, Maryland |
| Surname | Pratt |
| Given Name | William E. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Towson |
| 1935 Residence (County) | Baltimore |
| Additional Details | |
| Occupation | merchant marine |
| Industry | merchant marine |
| Class of Worker | PW |
| Hours Worked | 84 |
| Income (1939) | 2200 |
| Highest Grade | G 4 |
| 1935 Residence | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Merchant Marine |
| Township / Ward | Election District 9 |
| Est. Birth Year | ~1906 |
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 William | Age | Birth yr |
|---|---|---|---|---|
| Catherine Pratt | Daughter | — | 28 | ~1912 |
| Ellen Pratt | Daughter | — | 23 | ~1917 |
| Caroline Pratt | Head | — | 62 | ~1878 |
| Carroll Pratt | Son | — | 30 | ~1910 |
| William Pratt | Son | — | 34 | ~1906 |
Census Appearances
1920
Baltimore, Maryland
Son, age 14
Baltimore, Maryland · implied b. ~1906 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Pratt |
| Given Name | William E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read | Yes |
| Can Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Son, age 24
Baltimore, Maryland · implied b. ~1906 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Pratt |
| Given Name | William E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Mariner |
| Industry | Steam Ship Co |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-County, Maryland
Son, age 34
Baltimore-County, Maryland · implied b. ~1906 — 5 household members
| Surname | Pratt |
| Given Name | William E. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Towson |
| 1935 Residence (County) | Baltimore |
| Occupation | merchant marine |
| Industry | merchant marine |
| Class of Worker | PW |
| Hours Worked | 84 |
| Income (1939) | 2200 |
| Highest Grade | G 4 |
| 1935 Residence | Maryland |
| 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 William Pratt across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Thomas Pratt (~0.92 confidence) and mother Caroline Pratt (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Thomas Pratt
b. ~1874
Source father
● Household
· direct · ~0.92
Mother
Caroline Pratt
b. ~1878
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Pratt
Son · 1940 · age 34 · b. ~1906 · Maryland
★ You are viewing this record
Sibling
Ellen Pratt
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Carroll Pratt
Sibling · 1940 · age 30
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Pratt
Sibling · 1940 · age 28
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-County, Maryland
Open full size
1940 US Federal Census — Baltimore-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01505-00561)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Cecelia A. Barrett | 20 | daughter | Beautician | Ohio |
| 42 | Gorman J. Seders | 42 | head | Clerk | Maryland |
| 43 | Evelyn M. Seders | 41 | wife | — | Maryland |
| 44 | Barbara A. Seders | 10 | daughter | — | Maryland |
| 45 | Robert C. Wareing | 72 | father-in-law | — | Virginia |
| 46 | Thomas M. Jr. Duvall | 33 | head | Plant Superintendent | Maryland |
| 47 | Martha H. Duvall | 33 | wife | — | Minnesota |
| 48 | Thomas M. 3Rd Duvall | 4 | son | — | Maryland |
| 49 | Mary D. Duvall | 2 | daughter | — | Maryland |
| 50 | Noble A. Lewis | 57 | head | Credit Manager | West Virginia |
| 51 | Gertrude B. Lewis | 57 | wife | — | Maryland |
| 52 | James H. Jr. Riefle | 34 | head | Engineer Electrical | Maryland |
| 53 | Hallie G. Riefle | 34 | wife | — | Maryland |
| 54 | Idell Carolyn Riefle | 4 | daughter | — | Maryland |
| 55 | James H. 3Rd Riefle | 1 | son | — | Maryland |
| 56 | Edw. W. Maasch | 52 | head | Clerical Work Freight Dept | Maryland |
| 57 | Alma K. Maasch | 50 | wife | — | Maryland |
| 58 | George E. Maasch | 19 | son | — | Maryland |
| 59 | Clara M. Hilgenberg | 75 | mother-in-law | — | Maryland |
| 60 | Frederick H. Schreider | 63 | head | Attorney At Law | Austria |
| 61 | Barba Schreider | 60 | wife | — | Germany |
| 62 | Carl W. Steffens | 54 | cousin | Manager | Germany |
| 63 | William J. Christoffer | 42 | head | Motor Vehicle Engineer | Delaware |
| 64 | Anna A. Christoffer | 42 | wife | — | Maryland |
| 65 | Alma C. Abbott | 68 | mother-in-law | — | Maryland |
| 66 | Caroline Pratt | 62 | head | — | Maryland |
| 67 | William E. Pratt THIS PERSON | 34 | son | Merchant Marine | Maryland |
| 68 | Carroll P. Pratt | 30 | son | Office Work | Maryland |
| 69 | Catherine Pratt | 28 | daughter | Secretary | Maryland |
| 70 | Ellen S. Pratt | 23 | daughter | Teacher | Maryland |
| 71 | Mark A. Krieger | 38 | head | Superintendent Printing | Maryland |
| 72 | Katharine A. Krieger | 36 | wife | — | Maryland |
| 73 | Katharine C. Krieger | 13 | daughter | — | Maryland |
| 74 | Mark A. Jr. Krieger | 10 | son | — | Maryland |
| 75 | Christine Volk | 18 | servant | General Housework | Germany |
| 76 | Herbert N. Schisler | 41 | head | Claim Accountant | Maryland |
| 77 | Marie R. Schisler | 41 | wife | — | Maryland |
| 78 | Marie L. Schisler | 10 | daughter | — | Maryland |
| 79 | Alton L. Voukes | 40 | head | Mechanical Engineer | Ohio |
| 80 | Marie W. Voukes | 38 | wife | — | Iowa |
Related Census Records
Pedigree Summary
William + 3 siblings
Gen 1 · 2 parents
~0.92
Max depth 4 (1900–1950 window)
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)