JC
James Connelly — 1940 US Census Record
Linked across censuses1940 United States Federal Census · St.-Mary'S-County, Maryland
Our Model Tree links this James Connelly across the 1930 and 1940 US Censuses in St.-Mary'S-County, Maryland (XGBoost, ~Confirmed) — first a son (b.~1928), then head of a 9-person household.
Age 12
b. ~1928
Male
Son
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | St.-Mary'S-County, Maryland |
| Surname | Connelly |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Election District 3 Leonardtown |
| 1935 Residence (County) | Saint Mary's |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | No 3 |
| 1935 Residence | Same House |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Election District 3 Leonardtown |
| Est. Birth Year | ~1928 |
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 James | Age | Birth yr |
|---|---|---|---|---|
| James Connelly | Son | — | 12 | ~1928 |
| Maud Connelly | Spouse | — | 48 | ~1892 |
| Filmore Connelly | Head | — | 52 | ~1888 |
| Martha Shell | Other | — | 65 | ~1875 |
| George Connelly | Son | — | 20 | ~1920 |
| Paul Connelly | Son | — | 15 | ~1925 |
| Parran Connelly | Son | — | 17 | ~1923 |
| Virginia Connelly | Daughter | — | 7 | ~1933 |
| Raymond Connelly | Son | — | 11 | ~1929 |
Census Appearances
1930
St Mary …
Son, age 2
St Mary S, Maryland · implied b. ~1928 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Connelly |
| Given Name | James A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
St.-Mary'S-County, Maryland
Son, age 12
St.-Mary'S-County, Maryland · implied b. ~1928 — 9 household members
| Surname | Connelly |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Election District 3 Leonardtown |
| 1935 Residence (County) | Saint Mary's |
| Class of Worker | 0 |
| 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 James Connelly across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Connelly
Son · 1940 · age 12 · b. ~1928 · Maryland
★ You are viewing this record
Sibling
Raymond Connelly
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Connelly
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paul Connelly
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Virginia Connelly
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Parran Connelly
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 — 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-t0627-01559-00539)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Charles Blackstone | 31 | Head | Laborer | Maryland |
| 2 | Agnes Blackstone | 23 | Wife | — | Maryland |
| 3 | Henry Turnere | 68 | Head | Odd Jobs | Maryland |
| 4 | Mary Turnere | 52 | Wife | — | Maryland |
| 5 | Mary Beatrice Turnere | 22 | Daughter | — | Maryland |
| 6 | Roberta Clarke | 17 | Granddaughter | — | Maryland |
| 7 | Francis Fenwick | 15 | Grandson | — | Maryland |
| 8 | George Summerville | 13 | Grandson | — | Maryland |
| 9 | Mary Ellen Young | 9 | Granddaughter | — | Maryland |
| 10 | Enoch Bowles | 39 | Head | Farmer | Maryland |
| 11 | Alice Bowles | 81 | Mother | — | Maryland |
| 12 | Paul Greenwell | 48 | Head | Operator | Maryland |
| 13 | Mabel Greenwell | 40 | Wife | — | Maryland |
| 14 | Paul Jr. Greenwell | 17 | Son | — | Maryland |
| 15 | James Greenwell | 8 | Son | — | Maryland |
| 16 | Albert Holly | 62 | Head | Laborer | Maryland |
| 17 | Lucille Holly | 52 | Wife | Laundress | Maryland |
| 18 | Charles Holly | 32 | Son | Laborer | Maryland |
| 19 | Oscar Holly | 24 | Son | Laborer | Maryland |
| 20 | Louise Holly | 17 | Daughter | — | Maryland |
| 21 | Paul Holly | 15 | Son | Laborer | Maryland |
| 22 | Eliza Holly | 13 | Daughter | — | Maryland |
| 23 | Edith Holly | 6 | Daughter | — | Maryland |
| 24 | James Mason | 8 | Grandson | — | Maryland |
| 25 | Filmore Connelly | 52 | Head | — | Maryland |
| 26 | Maud Connelly | 48 | Wife | — | Maryland |
| 27 | George Connelly | 20 | Son | Mechanic | Maryland |
| 28 | Parran Connelly | 17 | Son | Chauffeur | Maryland |
| 29 | Paul Connelly | 15 | Son | — | Maryland |
| 30 | James Connelly THIS PERSON | 12 | Son | — | Maryland |
| 31 | Raymond Connelly | 11 | Son | — | Maryland |
| 32 | Virginia Connelly | 7 | Daughter | — | Maryland |
| 33 | Martha Shell | 65 | Mother-in-law | — | Maryland |
| 34 | Mckinley Connelly | 43 | Head | Painter | Maryland |
| 35 | Catherine Connelly | 38 | Wife | — | Maryland |
| 36 | Gertrude Connelly | 18 | Daughter | — | Maryland |
| 37 | Harris Connelly | 17 | Son | Carpenter Helper | Maryland |
| 38 | Joseph Connelly | 16 | Son | New Worker | Maryland |
| 39 | Agnes Connelly | 14 | Daughter | — | Maryland |
| 40 | Alberta Connelly | 11 | Daughter | — | 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)