JH
John Hennessey — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Ward, North Dakota
Our Model Tree links this John Hennessey across the 1930 and 1940 US Censuses in Ward, North Dakota (XGBoost, ~Confirmed) — first a son (b.~1911), then head of a 8-person household.
Age 19
b. ~1911
Male
Son
Born: Minnesota
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Ward, North Dakota |
| Surname | Hennessey |
| Given Name | John J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Minnesota |
| Mother's Birthplace | Minnesota |
| Additional Details | |
| Occupation | Laborer |
| Industry | Grain Farm |
| Class of Worker | VVVV |
| Can Read/Write | Yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Occupation | Laborer |
| Township / Ward | Berthold Township |
| Est. Birth Year | ~1911 |
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 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Raphael Hennessey | Son | — | 15 | ~1915 |
| John Hennessey | Son | — | 19 | ~1911 |
| Rosalie Hennessey | Daughter | — | 10 | ~1920 |
| Clement Hennessey | Son | — | 17 | ~1913 |
| Helen Hennessey | Daughter | — | 12 | ~1918 |
| William Hennessey | Head | — | 49 | ~1881 |
| Cecelia Hennessey | Spouse | — | 45 | ~1885 |
| Marjorie Hennessey | Daughter | — | 4 | ~1926 |
Census Appearances
1930
Ward, North …
Son, age 19
Ward, North Dakota · implied b. ~1911 — 8 household members
| Surname | Hennessey |
| Given Name | John J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Minnesota |
| Mother's Birthplace | Minnesota |
| Occupation | Laborer |
| Industry | Grain Farm |
| Class of Worker | VVVV |
| Can Read/Write | Yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1940
Ward-County, North …
Son, age 29
Ward-County, North Dakota · implied b. ~1911 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hennessy |
| Given Name | John J. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | Berthold City |
| 1935 Residence (County) | Ward |
| Occupation | Labor |
| Industry | WPA Grading Project |
| Class of Worker | GW |
| Hours Worked | 221 |
| Income (1939) | 490 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
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 Hennessey across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Hennessey
Son · 1930 · age 19 · b. ~1911 · North Dakota
★ You are viewing this record
Sibling
Clement Hennessey
Sibling · 1930 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rosalie Hennessey
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Hennessey
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Raphael Hennessey
Sibling · 1930 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marjorie Hennessey
Sibling · 1930 · age 4
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
1930 US Federal Census — Ward, North Dakota
Open full size
1930 US Federal Census — Ward, North Dakota
Page Contents
50 people indexed on this census page (ia:1930:15thcensus1744unit:0498)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Gilda P. Churness | 50 | Wife | — | Norway |
| 52 | Curtis L. Churness | 8 | Son | — | North Dakota |
| 53 | Alfred Underdahl | 46 | Brother-in-law | Farm Laborer | Minnesota |
| 54 | William Hennessey | 49 | Head | Farmer | Minnesota |
| 55 | Cecelia Hennessey | 45 | Wife | — | Minnesota |
| 56 | John J. Hennessey THIS PERSON | 19 | Son | Laborer | Minnesota |
| 57 | Clement P. Hennessey | 17 | Son | — | North Dakota |
| 58 | Raphael M. Hennessey | 15 | Son | — | North Dakota |
| 59 | Helen M. Hennessey | 12 | Daughter | — | North Dakota |
| 60 | Rosalie A. Hennessey | 10 | Daughter | — | North Dakota |
| 61 | Marjorie B. Hennessey | 4 | Daughter | — | North Dakota |
| 62 | Harry W. Lanterman | 25 | Head | Farming | North Dakota |
| 63 | Hildegard Lanterman | 23 | Wife | — | North Dakota |
| 64 | Gertrude Lanterman | 4 | Daughter | — | North Dakota |
| 65 | Eugene H. Lanterman | 3 | Son | — | North Dakota |
| 66 | Lal H. Rombke | 15 | Brother-in-law | — | North Dakota |
| 67 | John Allshouse | 33 | Head | Farmer | Illinois |
| 68 | Esther L. Allshouse | 24 | Wife | — | North Dakota |
| 69 | Wayne C. Allshouse | 3 | Son | — | North Dakota |
| 70 | Donald E. Allshouse | 1 | Son | — | North Dakota |
| 71 | Morris B. Allshouse | 0 | Son | — | North Dakota |
| 72 | Gilbert A. Alberg | 54 | Head | Farmer | Norway |
| 73 | Arthur S. Alberg | 20 | Son | Laborer | North Dakota |
| 74 | Ingvald M. Alberg | 18 | Son | — | North Dakota |
| 75 | August Baumgarten | 63 | Head | Farmer | Germany |
| 76 | Margaret Baumgarten | 59 | Wife | — | Pennsylvania |
| 77 | George O. Tudahl | 43 | Head | Farmer | Minnesota |
| 78 | Gina M. Tudahl | 39 | Wife | — | Minnesota |
| 79 | Emily C. D. Tudahl | 10 | Daughter | — | North Dakota |
| 80 | Oscar L. G. Tudahl | 8 | Son | — | North Dakota |
| 81 | Carol L. G. Tudahl | 5 | Son | — | North Dakota |
| 82 | Donald G. Tudahl | 2 | Son | — | North Dakota |
| 83 | Gaylord H. Tudahl | 0 | Son | — | North Dakota |
| 84 | George C. Wells | 29 | Head | Inspector | Louisiana |
| 85 | Charles L. Smith | 39 | Lodger | Inspector | Virginia |
| 86 | Carl R. Shue | 62 | Head | Farmer | Illinois |
| 87 | Bessie G. Shue | 55 | Wife | — | New Jersey |
| 88 | Beulah P. Shue | 27 | Daughter | Teaching | North Dakota |
| 89 | Chester G. Shue | 21 | Son | Laborer | Minnesota |
| 90 | Frank P. Smels | 42 | Head | Farmer | Minnesota |
| 91 | Theresa M. Smels | 44 | Wife | — | Minnesota |
| 92 | Helen M. Smels | 18 | Daughter | Waitress | Minnesota |
| 93 | Mamie M. Smels | 17 | Daughter | — | Minnesota |
| 94 | Marcella S. Smels | 13 | Daughter | — | North Dakota |
| 95 | Marion M. Smels | 11 | Daughter | — | North Dakota |
| 96 | Dorothy M. Smels | 9 | Daughter | — | North Dakota |
| 97 | Virginia R. Smels | 8 | Daughter | — | North Dakota |
| 98 | Teresa E. Smels | 4 | Daughter | — | North Dakota |
| 99 | Lawrence Shelkey | 30 | Head | Farmer | Illinois |
| 100 | Dorothy June Shelkey | 23 | Wife | — | North Dakota |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)