RM
Richard Mason — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Washington-County, Maryland
Our Model Tree links this Richard Mason across the 1930 and 1940 US Censuses in Washington-County, Maryland (XGBoost, ~Confirmed) — first a son (b.~1924), then head of a 11-person household.
Age 16
b. ~1924
Male
Son
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Washington-County, Maryland |
| Surname | Mason |
| Given Name | Richard |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Chewsville District 18 |
| 1935 Residence (County) | Washington |
| Additional Details | |
| Occupation | Farm |
| Industry | Farm |
| Class of Worker | NP |
| Hours Worked | 50 |
| Income (1939) | 0 |
| Highest Grade | 4 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Farm |
| Township / Ward | Chewsville District 18 |
| Est. Birth Year | ~1924 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Richard | Age | Birth yr |
|---|---|---|---|---|
| Laura Mason | Daughter | — | 24 | ~1916 |
| Ralph Mason | Son | — | 15 | ~1925 |
| Richard Mason | Son | — | 16 | ~1924 |
| James Mason | Head | — | 55 | ~1885 |
| Donald Mason | Son | — | 9 | ~1931 |
| Edith Mason | Spouse | — | 50 | ~1890 |
| Jane Mason | Daughter | — | 24 | ~1916 |
| Valmeta Mason | Daughter | — | 11 | ~1929 |
| Mary Mason | Daughter | — | 23 | ~1917 |
| John Mason | Son | — | 21 | ~1919 |
| Martha Mason | Daughter | — | 29 | ~1911 |
Census Appearances
1930
Washington, Maryland
Son, age 7
Washington, Maryland · implied b. ~1923 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mason |
| Given Name | Richard A |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Washington-County, Maryland
Son, age 16
Washington-County, Maryland · implied b. ~1924 — 11 household members
| Surname | Mason |
| Given Name | Richard |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Chewsville District 18 |
| 1935 Residence (County) | Washington |
| Occupation | Farm |
| Industry | Farm |
| Class of Worker | NP |
| Hours Worked | 50 |
| Income (1939) | 0 |
| Highest Grade | 4 |
| 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 Richard Mason across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Richard Mason
Son · 1940 · age 16 · b. ~1924 · Maryland
★ You are viewing this record
Sibling
Ralph Mason
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Martha Mason
Sibling · 1940 · age 29
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Mason
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Mason
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Valmeta Mason
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jane Mason
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Mason
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Laura Mason
Sibling · 1940 · age 24
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 — Washington-County, Maryland
Open full size
1940 US Federal Census — Washington-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01561-01074)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Otto Horst | 35 | Head | Farmer | Maryland |
| 42 | Emma Horst | 36 | Wife | Farm Home | Maryland |
| 43 | Irvin Horst | 13 | Son | — | Maryland |
| 44 | Martha Horst | 12 | Daughter | — | Maryland |
| 45 | Elmer Horst | 11 | Son | — | Maryland |
| 46 | Melvin Horst | 10 | Son | — | Maryland |
| 47 | Mary Horst | 8 | Daughter | — | Maryland |
| 48 | Otis Horst | 7 | Son | — | Maryland |
| 49 | Daniel Horst | 5 | Son | — | Maryland |
| 50 | Ethel Horst | 4 | Daughter | — | Maryland |
| 51 | Mark Horst | 1 | Son | — | Maryland |
| 52 | Annie M Horst | 70 | Mother | — | Maryland |
| 53 | Laura J Horst | 46 | Sister | — | Maryland |
| 54 | Joseph Harman | 57 | Head | Farmer | Maryland |
| 55 | Robert H Harman | 21 | Son | — | Maryland |
| 56 | Donald Harman | 15 | Son | — | Maryland |
| 57 | Lois Harman | 10 | Daughter | — | Maryland |
| 58 | Emory Harman | 3 | Son | — | Maryland |
| 59 | Annie L Harman | 48 | Wife | — | Maryland |
| 60 | Charles R Shank | 50 | Head | Farmer | Maryland |
| 61 | Hattie Shank | 51 | Wife | — | Maryland |
| 62 | Marie Shank | 28 | Daughter | Secretary | Maryland |
| 63 | Hellen Shank | 26 | Daughter | Clerk | Maryland |
| 64 | Grace Shank | 24 | Daughter | Clerk | Maryland |
| 65 | Charles E Shank | 22 | Son | Truck Driver | Maryland |
| 66 | Edith S Shank | 19 | Daughter | Housework | Maryland |
| 67 | Laura E Shank | 17 | Daughter | Housework | Maryland |
| 68 | Elva R Shank | 13 | Daughter | — | Maryland |
| 69 | Charlotte R Shank | 9 | Daughter | — | Maryland |
| 70 | James C Mason | 55 | Head | Farmer | Maryland |
| 71 | Edith Mason | 50 | Wife | Farm Home | Maryland |
| 72 | Martha Mason | 29 | Daughter | Farm Home | Maryland |
| 73 | Laura M Mason | 24 | Daughter | Farm | Maryland |
| 74 | Jane I Mason | 24 | Daughter | Farm | Maryland |
| 75 | Mary E Mason | 23 | Daughter | Farm | Maryland |
| 76 | John H Mason | 21 | Son | Farm | Maryland |
| 77 | Richard Mason THIS PERSON | 16 | Son | Farm | Maryland |
| 78 | Ralph Mason | 15 | Son | — | Maryland |
| 79 | Valmeta Mason | 11 | Daughter | — | Maryland |
| 80 | Donald Mason | 9 | Son | — | 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)