JD
John Donnelly — 1940 US Census Record
Model Tree available1940 United States Federal Census · Charleston-County, South Carolina
Our Model Tree links this John Donnelly across the 1920, 1930 and 1940 US Censuses in Charleston-County, South Carolina (XGBoost, ~Confirmed), with identified parents Frank & Frank — first a son (b.~1916), then head of a 11-person household.
Age 24
b. ~1916
Male
Son
Born: South Carolina
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Charleston-County, South Carolina |
| Surname | Donnelly |
| Given Name | John J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | South Carolina |
| 1935 Residence (City) | Charleston City |
| 1935 Residence (County) | Charleston |
| Additional Details | |
| Occupation | Machinist Helper |
| Industry | Navy Yard |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 1200 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
| Occupation | Machinist Helper |
| Township / Ward | Charleston City |
| Est. Birth Year | ~1916 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Margaret Rolland | Daughter | — | 32 | ~1908 |
| Kitty Donnelly | Daughter | — | 32 | ~1908 |
| Frank Donnelly | Head | — | 66 | ~1874 |
| Buddy Rolland | Other | — | 4 | ~1936 |
| Shirley Rolland | Other | — | 6 | ~1934 |
| Paul Rolland | Other | — | 38 | ~1902 |
| John Donnelly | Son | — | 24 | ~1916 |
| Frank Donnelly | Son | — | 28 | ~1912 |
| Joseph Donnelly | Son | — | 26 | ~1914 |
| Edward Donnelly | Son | — | 21 | ~1919 |
| Margaret Donnelly | Spouse | — | 60 | ~1880 |
Census Appearances
1920
Charleston, South …
Son, age 4
Charleston, South Carolina · implied b. ~1916 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Donnelly |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | South Carolina |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
1930
Charleston, South …
Son, age 15
Charleston, South Carolina · implied b. ~1915 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Donnelly |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | South Carolina |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Can Read/Write | Yes |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
1940
Charleston-County, South …
Son, age 24
Charleston-County, South Carolina · implied b. ~1916 — 11 household members
| Surname | Donnelly |
| Given Name | John J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | South Carolina |
| 1935 Residence (City) | Charleston City |
| 1935 Residence (County) | Charleston |
| Occupation | Machinist Helper |
| Industry | Navy Yard |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 1200 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
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 Donnelly across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Frank Donnelly (~0.92 confidence) and father Frank Donnelly (~0.92 confidence) and mother Margaret Donnelly (~0.92 confidence) and mother Margaret Donnelly (~0.92 confidence) and father Frank Donnelly (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Frank Donnelly
b. ~1873
Source father
● Household
· direct · ~0.92
Father
Frank Donnelly
b. ~1874
Source father
● Household
· direct · ~0.92
Mother
Margaret Donnelly
b. ~1878
Source mother
● Household
· direct · ~0.92
Mother
Margaret Donnelly
b. ~1879
Source mother
● Household
· direct · ~0.92
Father
Frank Donnelly
b. ~1880
Source father
● Household
· direct · ~0.92
This person
Anchor record
John Donnelly
Son · 1940 · age 24 · b. ~1916 · South Carolina
★ You are viewing this record
Sibling
Frank Donnelly
Sibling · 1940 · age 28
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Rolland
Sibling · 1940 · age 32
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Donnelly
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kitty Donnelly
Sibling · 1940 · age 32
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Donnelly
Sibling · 1940 · age 21
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 — Charleston-County, South Carolina
Open full size
1940 US Federal Census — Charleston-County, South Carolina
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03793-00311)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Leslie Palmer | 55 | Head | Book Keeper | South Carolina |
| 2 | Rosemary Palmer | 37 | Wife | — | South Carolina |
| 3 | Penelope Palmer | 17 | Daughter | — | South Carolina |
| 4 | Frank S. Minott | 52 | Head | Fertilizer Manufacturer | South Carolina |
| 5 | Myrtle Minott | 47 | Wife | — | South Carolina |
| 6 | Barbara Minott | 9 | Daughter | — | South Carolina |
| 7 | J. William Molony | 58 | Head | Manager | South Carolina |
| 8 | Rose M. Molony | 48 | Wife | Musician | South Carolina |
| 9 | Ann C. Molony | 14 | Daughter | — | South Carolina |
| 10 | Rose Mary Molony | 13 | Daughter | — | South Carolina |
| 11 | J. William Jr. Molony | 11 | Son | — | South Carolina |
| 12 | James S. Molony | 10 | Son | — | South Carolina |
| 13 | Louis A. Gattman | 42 | Head | Engineer Inspector | Georgia |
| 14 | Wilma Gattman | 39 | Wife | — | South Carolina |
| 15 | Louis A. Jr. Gattman | 18 | Son | Ship Fitter | Georgia |
| 16 | Bessie Gattman | 15 | Daughter | — | Georgia |
| 17 | Lillian D. Kirk | 58 | Head | — | South Carolina |
| 18 | Mary Ab Kirk | 20 | Daughter | — | South Carolina |
| 19 | Frank S. Donnelly | 66 | Head | Fireman | South Carolina |
| 20 | Margaret Donnelly | 60 | Wife | — | South Carolina |
| 21 | Kitty Donnelly | 32 | Daughter | Operator | Georgia |
| 22 | Frank Jr. Donnelly | 28 | Son | Special Messenger | Georgia |
| 23 | Joseph D. Donnelly | 26 | Son | Fireman | Georgia |
| 24 | John J. Donnelly THIS PERSON | 24 | Son | Machinist Helper | South Carolina |
| 25 | Edward Donnelly | 21 | Son | Fireman | South Carolina |
| 26 | Margaret Rolland | 32 | Daughter | Stenographer | Georgia |
| 27 | Paul Rolland | 38 | Son in Law | Salesman | South Carolina |
| 28 | Shirley Rolland | 6 | Granddaughter | — | South Carolina |
| 29 | Buddy Rolland | 4 | Grandson | — | South Carolina |
| 30 | Joseph M. Kelly | 37 | Head | Superintendent Navy Yard P.O. | South Carolina |
| 31 | Anne D. Kelly | 35 | Wife | — | South Carolina |
| 32 | Elizabeth D. Kelly | 5 | Daughter | — | South Carolina |
| 33 | John R. Mcdaniel | 58 | Father in Law | Ticket Collector | South Carolina |
| 34 | Elizabeth Mcdaniel | 57 | Mother in Law | — | South Carolina |
| 35 | Ida E. Johnson | 60 | Lodger | Clerk | South Carolina |
| 36 | Samuel E. Cochran | 33 | Head | Book Keeper | South Carolina |
| 37 | Metilda Cochran | 33 | Wife | — | South Carolina |
| 38 | Jeanne M. Cochran | 6 | Daughter | — | South Carolina |
| 39 | Hubert J. Ready | 37 | Head | Bakery Manager | South Carolina |
| 40 | Bertha A. Ready | 40 | Wife | — | South Carolina |
Related Census Records
Pedigree Summary
John + 5 siblings
Gen 1 · 5 parents
~0.92
Max depth 4 (1900–1950 window)
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)