WD
William Dunn — 1940 US Census Record
Model Tree available1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this William Dunn across the 1910, 1920, 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed), with identified parents Mary & William — first a head (b.~1908), then head of a 3-person household.
Age 32
b. ~1908
Male
Head
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Dunn |
| Given Name | William B |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Additional Details | |
| Occupation | Color Man |
| Industry | Wiping Cloth |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1560 |
| Highest Grade | H 8 |
| 1935 Residence | Same Place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Color Man |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1908 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Mark Dunn | Daughter | — | 1 | ~1939 |
| William Dunn | Head | — | 32 | ~1908 |
| Mary Dunn | Spouse | — | 27 | ~1913 |
Census Appearances
1910
Baltimore, Maryland
Son, age 1
Baltimore, Maryland · implied b. ~1909 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dunn |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1920
Baltimore, Maryland
Son, age 11
Baltimore, Maryland · implied b. ~1909 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dunn |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Son, age 20
Baltimore, Maryland · implied b. ~1910 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dunn |
| Given Name | William B. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Packer |
| Industry | Sea Food |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Head, age 32
Baltimore-City-County, Maryland · implied b. ~1908 — 3 household members
| Surname | Dunn |
| Given Name | William B |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Occupation | Color Man |
| Industry | Wiping Cloth |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1560 |
| Highest Grade | H 8 |
| 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 William Dunn across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Mary Dunn (~0.92 confidence) and father William Dunn (~0.92 confidence) and mother Mary Dunn (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Mary Dunn
b. ~1879
Source mother
● Household
· direct · ~0.92
Father
William Dunn
b. ~1882
Source father
● Household
· direct · ~0.92
Mother
Mary Dunn
b. ~1887
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Dunn
Head · 1940 · age 32 · b. ~1908 · Maryland
★ You are viewing this record
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-t0627-01533-00193)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Lillian Hauer | 6 | Daughter | — | Maryland |
| 42 | Dorothy Hauer | 4 | Daughter | — | Maryland |
| 43 | Jean Bielit | 25 | Housekeeper | Housekeeper | Maryland |
| 44 | James C Holland | 55 | Head | Blacksmith | Maryland |
| 45 | Agnes M Holland | 49 | Wife | Housekeeper | Maryland |
| 46 | James J Holland | 20 | Son | Radio Parts | Maryland |
| 47 | Betty J Holland | 8 | Daughter | — | Maryland |
| 48 | Florence Stinefelt | 74 | Mother-in-law | — | Maryland |
| 49 | Henry C Harder | 38 | Head | Installer | Maryland |
| 50 | Blanche D Harder | 32 | Wife | Housekeeper | Connecticut |
| 51 | Kenneth Harder | 1 | Son | — | Maryland |
| 52 | Mary C Lammrich | 69 | Head | Housekeeper | Maryland |
| 53 | Melvin L Lestat | 40 | Head | Mail Clerk | Maryland |
| 54 | Hilda M Lestat | 31 | Wife | Housekeeper | Maryland |
| 55 | Gladys H Lestat | 11 | Daughter | — | Maryland |
| 56 | Melvin Jr Lestat | 2 | Son | — | Maryland |
| 57 | James H Jones | 52 | Head | Machinist | South Carolina |
| 58 | Anna M Jones | 50 | Wife | Housekeeper | Germany |
| 59 | Bernard Dunn | 63 | Head | Pullman | Maryland |
| 60 | Louise J Dunn | 62 | Wife | Housekeeper | Maryland |
| 61 | Mary L Dunn | 22 | Daughter | Housekeeper | Maryland |
| 62 | William B Dunn THIS PERSON | 32 | Head | Color Man | Maryland |
| 63 | Mary E Dunn | 27 | Wife | Housekeeper | Maryland |
| 64 | Mark P Dunn | 1 | Daughter | — | Maryland |
| 65 | Louis C Wel | 72 | Head | — | Maryland |
| 66 | Mary E Wel | 76 | Wife | Housekeeper | Maryland |
| 67 | Albert E Sr Lott | 40 | Head | Machinist | Pennsylvania |
| 68 | Beatrice D Lott | 46 | Wife | Housekeeper | Maryland |
| 69 | Albert E Jr Lott | 19 | Son | Machinist Helper | Maryland |
| 70 | Edward G Lott | 5 | Son | — | Maryland |
| 71 | Clarence C Gale | 70 | Lodger | — | Maryland |
| 72 | Grace Monday | 46 | Head | Housekeeper | West Virginia |
| 73 | Lucy Wamsley | 45 | Lodger | Cap Maker | West Virginia |
| 74 | Nina Wamsley | 16 | Daughter | — | West Virginia |
| 75 | Anton H Eitner | 57 | Lodger | Jeweler | Maryland |
| 76 | Albert Schaeffer | 76 | Lodger | — | Maryland |
| 77 | Thomas J Sr Kelly | 46 | Head | Pharmacist | Maryland |
| 78 | Florence B Kelly | 43 | Wife | Housekeeper | Maryland |
| 79 | Thomas J Jr Kelly | 23 | Son | Helper | Maryland |
| 80 | Marie B Kelly | 17 | Daughter | Student | Maryland |
Pedigree Summary
William
Gen 1 · 3 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)