JG
John Giles — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Frederick-County, Maryland
Our Model Tree links this John Giles across the 1930 and 1940 US Censuses in Frederick-County, Maryland (XGBoost, ~Confirmed) — first a son (b.~1920), then head of a 9-person household.
Age 20
b. ~1920
Male
Son
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Frederick-County, Maryland |
| Surname | Giles |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Brunswick town |
| 1935 Residence (County) | Frederick |
| Additional Details | |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 16 |
| Income (1939) | 266 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Laborer |
| Township / Ward | Brunswick Town |
| Est. Birth Year | ~1920 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Maxine Giles | Daughter | — | 21 | ~1919 |
| Gilbert Giles | Son | — | 10 | ~1930 |
| Lucille Giles | Daughter | — | 15 | ~1925 |
| Charles Giles | Head | — | 46 | ~1894 |
| Samuel Giles | Son | — | 17 | ~1923 |
| Alice Giles | Spouse | — | 40 | ~1900 |
| John Giles | Son | — | 20 | ~1920 |
| James Giles | Son | — | 15 | ~1925 |
| Henry Giles | Son | — | 22 | ~1918 |
Census Appearances
1930
Frederick, Maryland
Son, age 9
Frederick, Maryland · implied b. ~1921 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Giles |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Frederick-County, Maryland
Son, age 20
Frederick-County, Maryland · implied b. ~1920 — 9 household members
| Surname | Giles |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Brunswick town |
| 1935 Residence (County) | Frederick |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 16 |
| Income (1939) | 266 |
| Highest Grade | No 7 |
| 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 John Giles across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Giles
Son · 1940 · age 20 · b. ~1920 · Maryland
★ You are viewing this record
Sibling
Lucille Giles
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Maxine Giles
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Samuel Giles
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Henry Giles
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gilbert Giles
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Giles
Sibling · 1940 · age 15
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 — Frederick-County, Maryland
Open full size
1940 US Federal Census — Frederick-County, Maryland
Page Contents
23 people indexed on this census page (nara:1940:m-t0627-01549-00664)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Richard Summers | 22 | Head | Truck Driver | Maryland |
| 42 | Eclaire|Eclairee Summers | 18 | Wife | Packer | Maryland |
| 43 | Abraham Fracks | 73 | Head | Carmen | West Virginia |
| 44 | Florence Fracks | 67 | Wife | — | West Virginia |
| 45 | Raymond Fracks | 46 | Son | Helper | West Virginia |
| 46 | Beulah Fracks | 33 | Daughter | — | Maryland |
| 47 | Ethel Fracks | 13 | Granddaughter | — | Maryland |
| 48 | Elmer Dean | 46 | Head | Laborer | Maryland |
| 49 | Catherine Dean | 46 | Wife | — | Pennsylvania |
| 50 | Mary Dean | 15 | Daughter | — | Maryland |
| 51 | Charles Bintermant | 26 | Head | Laborer | Maryland |
| 52 | Rachel Bintermant | 21 | Wife | — | Maryland |
| 53 | Charles Bintermant | 4 | Son | — | Maryland |
| 54 | Harry Bintermant | 2 | Son | — | Maryland |
| 55 | Charles Giles | 46 | Head | Laborer | Maryland |
| 56 | Alice Giles | 40 | Wife | — | Maryland |
| 57 | Henry Giles | 22 | Son | Orderly | Maryland |
| 58 | Maxine Giles | 21 | Daughter | Mach. Op. | Maryland |
| 59 | John Giles THIS PERSON | 20 | Son | Laborer | Maryland |
| 60 | Samuel Giles | 17 | Son | — | Maryland |
| 61 | James Giles | 15 | Son | Orderly | Maryland |
| 62 | Lucille Giles | 15 | Daughter | — | Maryland |
| 63 | Gilbert Giles | 10 | 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)