RP
Robert Pierce — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Washington-County, Maryland
Our Model Tree links this Robert Pierce across the 1930 and 1940 US Censuses in Washington-County, Maryland (XGBoost, ~Confirmed) — first a son (b.~1926), then head of a 8-person household.
Age 14
b. ~1926
Male
Son
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Washington-County, Maryland |
| Surname | Pierce |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Antietam Furnace |
| 1935 Residence (County) | Washington |
| Additional Details | |
| Highest Grade | No 3 |
| 1935 Residence | Same House |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Antietam Furnace |
| Est. Birth Year | ~1926 |
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 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Robert Pierce | Son | — | 14 | ~1926 |
| George Pierce | Head | — | 55 | ~1885 |
| Howard Pierce | Son | — | 25 | ~1915 |
| Effie Pierce | Spouse | — | 51 | ~1889 |
| Cecil Pierce | Son | — | 10 | ~1930 |
| Eva Pierce | Daughter | — | 9 | ~1931 |
| Charles Pierce | Son | — | 18 | ~1922 |
| Harold Pierce | Son | — | 19 | ~1921 |
Census Appearances
1930
Washington, Maryland
Son, age 3
Washington, Maryland · implied b. ~1927 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Pierce |
| Given Name | Robert L |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Virginia |
| Can Read/Write | No |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Washington-County, Maryland
Son, age 14
Washington-County, Maryland · implied b. ~1926 — 8 household members
| Surname | Pierce |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Antietam Furnace |
| 1935 Residence (County) | Washington |
| Highest Grade | No 3 |
| 1935 Residence | Same House |
| 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 Robert Pierce across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Pierce
Son · 1940 · age 14 · b. ~1926 · Maryland
★ You are viewing this record
Sibling
Howard Pierce
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Pierce
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eva Pierce
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harold Pierce
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Cecil Pierce
Sibling · 1940 · age 10
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-t0627-01561-00034)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Margaret R. Gray | 5 | Daughter | — | Maryland |
| 2 | Lambert D. Hottel | 40 | Head | Laborer | Maryland |
| 3 | Malcolm Hottel | 19 | Son | Laborer | Maryland |
| 4 | Carl Hottel | 17 | Son | Laborer | Maryland |
| 5 | Virginia Hottel | 16 | Daughter | — | Maryland |
| 6 | John Hottel | 14 | Son | — | Maryland |
| 7 | Alvey Hottel | 11 | Son | — | Maryland |
| 8 | Charles C. Boyer | 56 | Head | Pumper | Maryland |
| 9 | Mary L. Boyer | 54 | Wife | — | Virginia |
| 10 | Charles Jr. Boyer | 17 | Son | New Worker | Maryland |
| 11 | John A. Dillinger | 35 | Head | Farmer | Maryland |
| 12 | Alita A. Dillinger | 29 | Wife | — | Maryland |
| 13 | David Dillinger | 12 | Son | — | Maryland |
| 14 | Floyd Dillinger | 10 | Son | — | Maryland |
| 15 | Walter S. Dillinger | 48 | Head | Store Keeper | Maryland |
| 16 | Elsie M. Dillinger | 46 | Wife | — | Maryland |
| 17 | Ernest L. Dillinger | 26 | Son | Farm Hand | Maryland |
| 18 | Floyd C. Dillinger | 24 | Son | Farm Hand | Maryland |
| 19 | Donald P. Dillinger | 21 | Son | Cabinet Maker | Maryland |
| 20 | Minnie F. Tucker | 62 | Head | Attendant | Maryland |
| 21 | Charles W. Hammond | 68 | Head | Laborer | Maryland |
| 22 | George Pierce | 55 | Head | Laborer | Maryland |
| 23 | Effie M. Pierce | 51 | Wife | — | Virginia |
| 24 | Howard Pierce | 25 | Son | Laborer | Maryland |
| 25 | Harold Pierce | 19 | Son | Laborer | Maryland |
| 26 | Charles Pierce | 18 | Son | Laborer | Maryland |
| 27 | Robert Pierce THIS PERSON | 14 | Son | — | Maryland |
| 28 | Cecil Pierce | 10 | Son | — | Maryland |
| 29 | Eva Pierce | 9 | Daughter | — | Maryland |
| 30 | George W. Hutson | 65 | Head | — | Maryland |
| 31 | Gilbert Hutson | 25 | Son | Laborer | Maryland |
| 32 | James Hutson | 23 | Son | Laborer | Maryland |
| 33 | Otha J. Kretzer | 39 | Head | Laborer | Maryland |
| 34 | Martha O. Kretzer | 36 | Wife | — | Maryland |
| 35 | Alice Kretzer | 10 | Daughter | — | Maryland |
| 36 | Dorothy Kretzer | 8 | Daughter | — | Maryland |
| 37 | Geraldine Kretzer | 5 | Daughter | — | Maryland |
| 38 | Norma Kretzer | 2 | Daughter | — | Maryland |
| 39 | Betty Kretzer | 1 | Daughter | — | Maryland |
| 40 | Otha Kretzer | 12 | Son | — | Maryland |
Related Census Records
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)