JC
John Chase — 1940 US Census Record
Linked across censuses1940 United States Federal Census · St.-Mary'S-County, Maryland
Our Model Tree links this John Chase across the 1930 and 1940 US Censuses in St.-Mary'S-County, Maryland (XGBoost, ~Confirmed) — first a head (b.~1895), then head of a 7-person household.
Age 45
b. ~1895
Male
Head
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | St.-Mary'S-County, Maryland |
| Surname | Chase |
| Given Name | John H |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (County) | St Mary |
| Additional Details | |
| Occupation | laborer |
| Industry | tob farm |
| Class of Worker | PW |
| Hours Worked | 80 |
| Income (1939) | 86 |
| Highest Grade | No 2 |
| 1935 Residence | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Laborer |
| Township / Ward | Election Dist 6 |
| Est. Birth Year | ~1895 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| John Chase | Head | — | 45 | ~1895 |
| Aldenta Chase | Daughter | — | 18 | ~1922 |
| Mary Chase | Spouse | — | 45 | ~1895 |
| Marie Chase | Daughter | — | 14 | ~1926 |
| Loretta Chase | Daughter | — | 3 | ~1937 |
| Dorothy Chase | Daughter | — | 30 | ~1910 |
| Cecelia Chase | Daughter | — | 13 | ~1927 |
Census Appearances
1930
St Mary …
Head, age 35
St Mary S, Maryland · implied b. ~1895 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Chase |
| Given Name | John F |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 22 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Veteran | No |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
St.-Mary'S-County, Maryland
Head, age 45
St.-Mary'S-County, Maryland · implied b. ~1895 — 7 household members
| Surname | Chase |
| Given Name | John H |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (County) | St Mary |
| Occupation | laborer |
| Industry | tob farm |
| Class of Worker | PW |
| Hours Worked | 80 |
| Income (1939) | 86 |
| Highest Grade | No 2 |
| 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 John Chase across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Chase
Head · 1940 · age 45 · b. ~1895 · 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 — St.-Mary'S-County, Maryland
Open full size
1940 US Federal Census — St.-Mary'S-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01559-00685)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Robert Scully | 17 | Grandson | — | Washington |
| 2 | Albert Scully | 15 | Grandson | — | Washington |
| 3 | Robert L Kelley | 37 | Head | Laborer | Maryland |
| 4 | Venture M Kelley | 32 | Wife | 5 | Maryland |
| 5 | Alfred J Kelley | 11 | Son | — | Maryland |
| 6 | Wilmer J Kelley | 5 | Son | — | Maryland |
| 7 | Stanley Simms | 24 | Head | Laborer | Maryland |
| 8 | Elizabeth Simms | 21 | Wife | 5 | Maryland |
| 9 | Benjamin Kelly | 69 | Head | Waterman | Maryland |
| 10 | Hammitt H Ching | 40 | Head | Laborer | Maryland |
| 11 | Philip Frederick | 58 | Head | Laborer | Maryland |
| 12 | Katherine Frederick | 53 | Wife | 5 | Maryland |
| 13 | James F Frederick | 14 | Son | — | Maryland |
| 14 | Regina A Frederick | 11 | Daughter | — | Maryland |
| 15 | Herman S Frederick | 5 | Grandson | — | Maryland |
| 16 | William Chapman | 75 | Head | — | Maryland |
| 17 | Benjamin Gatton | 51 | Head | Waterman | Maryland |
| 18 | Margaret Gatton | 28 | Wife | Waterman | Maryland |
| 19 | Raymond Dean | 27 | Head | — | Maryland |
| 20 | Mary B Dean | 24 | Wife | Chauffeur | Maryland |
| 21 | Margaret A Dean | 1 | Daughter | — | Maryland |
| 22 | James A Daniels | 36 | Head | Farming | Maryland |
| 23 | Naoma M Daniels | 35 | Wife | 5 | Maryland |
| 24 | Thelma T Daniels | 7 | Daughter | — | Maryland |
| 25 | Francis R Daniels | 3 | Son | — | Maryland |
| 26 | Alice V Lyles | 64 | Head | — | Maryland |
| 27 | John H Chase THIS PERSON | 45 | Head | Laborer | Maryland |
| 28 | Mary L Chase | 45 | Wife | 5 | Maryland |
| 29 | Dorothy V Chase | 30 | Daughter | — | Maryland |
| 30 | Aldenta M Chase | 18 | Daughter | — | Maryland |
| 31 | Marie M Chase | 14 | Daughter | — | Maryland |
| 32 | Cecelia M Chase | 13 | Daughter | — | Maryland |
| 33 | Loretta M Chase | 3 | Daughter | — | Maryland |
| 34 | John Q Fenwick | 69 | Head | Farmer | Maryland |
| 35 | Blanche B Fenwick | 64 | Wife | 5 | Maryland |
| 36 | Leroy J Fenwick | 20 | Son | Laborer | Maryland |
| 37 | Andrew J Mattingly | 27 | Head | Carpenter | Maryland |
| 38 | Mildred M Mattingly | 22 | Wife | 5 | Maryland |
| 39 | Andrew J Jr Mattingly | 0 | Son | — | Maryland |
| 40 | J Robert Sell | 27 | Head | Laborer | 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)