JU
James Underwood — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Prince-George'S-County, Maryland
Our Model Tree links this James Underwood across the 1930 and 1940 US Censuses in Prince-George'S-County, Maryland (XGBoost, ~Confirmed) — first a son (b.~1921), then head of a 7-person household.
Age 19
b. ~1921
Male
Son
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Prince-George'S-County, Maryland |
| Surname | Underwood |
| Given Name | James A. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Mt. Rainier |
| 1935 Residence (County) | Prince Georges |
| Additional Details | |
| Occupation | Stenographer |
| Industry | Railroad |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 1200 |
| Highest Grade | Hs 3 |
| 1935 Residence | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Stenographer |
| Township / Ward | Hyattsville |
| Est. Birth Year | ~1921 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Thomas Underwood | Son | — | 17 | ~1923 |
| Margaret Underwood | Daughter | — | 21 | ~1919 |
| Sally Underwood | Spouse | — | 58 | ~1882 |
| James Underwood | Head | — | 56 | ~1884 |
| Marianne Underwood | Daughter | — | 22 | ~1918 |
| James Underwood | Son | — | 19 | ~1921 |
| John Underwood | Son | — | 15 | ~1925 |
Census Appearances
1930
Baltimore, Maryland
Son, age 9
Baltimore, Maryland · implied b. ~1921 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Underwood |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Virginia |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Prince-George'S-County, Maryland
Son, age 19
Prince-George'S-County, Maryland · implied b. ~1921 — 7 household members
| Surname | Underwood |
| Given Name | James A. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Mt. Rainier |
| 1935 Residence (County) | Prince Georges |
| Occupation | Stenographer |
| Industry | Railroad |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 1200 |
| Highest Grade | Hs 3 |
| 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 James Underwood across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Underwood
Son · 1940 · age 19 · b. ~1921 · Maryland
★ You are viewing this record
Sibling
John Underwood
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Underwood
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marianne Underwood
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Underwood
Sibling · 1940 · age 17
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 — Prince-George'S-County, Maryland
Open full size
1940 US Federal Census — Prince-George'S-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01557-00641)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | James P. Morris | 43 | Head | Electrician | Virginia |
| 42 | Anna V. Morris | 38 | Wife | Clerk | Virginia |
| 43 | James P. Jr. Morris | 19 | Son | Bookkeeper | Maryland |
| 44 | Lily T. Morris | 15 | Daughter | — | Maryland |
| 45 | Rosalie J. Morris | 7 | Daughter | — | D.C. |
| 46 | Margaret S. O'Brien | 44 | Head | Bookkeeper | Virginia |
| 47 | Margaret M. O'Brien | 19 | Daughter | Bookkeeper | D.C. |
| 48 | Mary C. O'Brien | 16 | Daughter | — | Maryland |
| 49 | Howard Davis | 32 | Head | Policeman | Missouri |
| 50 | Ruth Davis | 32 | Wife | — | New York |
| 51 | Mary Alice Davis | 4 | Daughter | — | D.C. |
| 52 | John Davis | 0 | Son | — | D.C. |
| 53 | Susan Kehnley | 52 | Head | Clerk | D.C. |
| 54 | Herbert R. Yates | 44 | Lodger | Advertising | Maryland |
| 55 | Ann Dominick | 21 | Lodger | Stenographer | Ohio |
| 56 | Sylvan Dietz | 35 | Head | Clerk | Pennsylvania |
| 57 | Reba Dietz | 28 | Wife | — | D.C. |
| 58 | Daniel Kipp | 45 | Head | Printer | Maryland |
| 59 | Marie Kipp | 40 | Wife | — | Maryland |
| 60 | Henry N. Donohue | 53 | Head | Electrician | Massachusetts |
| 61 | Honora Donohue | 56 | Wife | — | Massachusetts |
| 62 | Leonard Donohue | 26 | Son | Checker | Massachusetts |
| 63 | James Donohue | 22 | Son | Mechanist | Massachusetts |
| 64 | John R. Shaffer | 47 | Head | Clerk | W. Virginia |
| 65 | Jane Shaffer | 40 | Wife | — | W. Virginia |
| 66 | John Shaffer | 14 | Son | — | W. Virginia |
| 67 | William Shaffer | 12 | Son | — | W. Virginia |
| 68 | Richard Shaffer | 8 | Son | — | W. Virginia |
| 69 | James A. Underwood | 56 | Head | Custodian | N. Carolina |
| 70 | Sally Underwood | 58 | Wife | — | N. Carolina |
| 71 | Marianne Underwood | 22 | Daughter | Clerk | N. Carolina |
| 72 | Margaret Underwood | 21 | Daughter | Secretary | N. Carolina |
| 73 | James A. Jr. Underwood THIS PERSON | 19 | Son | Stenographer | Maryland |
| 74 | Thomas Underwood | 17 | Son | — | Maryland |
| 75 | John Underwood | 15 | Son | — | Maryland |
| 76 | Howard Dustin | 32 | Head | Bookkeeper | Massachusetts |
| 77 | Louise Dustin | 29 | Wife | — | Massachusetts |
| 78 | Willis Dustin | 8 | Son | — | Rhode Island |
| 79 | Mark Dustin | 7 | Son | — | Massachusetts |
| 80 | Helen Dustin | 5 | Daughter | — | Massachusetts |
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)