JC
James Connolly — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Jones, Iowa
Our Model Tree links this James Connolly across the 1920, 1930 and 1940 US Censuses in Jones, Iowa (XGBoost, ~Confirmed) — first a head (b.~1886), then head of a 4-person household.
Age 44
b. ~1886
Male
Head
Born: Iowa
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Jones, Iowa |
| Surname | Connolly |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 21 |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Additional Details | |
| Occupation | Laborer |
| Industry | Implement Factory |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 1500 |
| Veteran | No |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Laborer |
| Township / Ward | Monticello City |
| Est. Birth Year | ~1886 |
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.
4 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Katherine Connolly | Spouse | — | 40 | ~1890 |
| James Connolly | Head | — | 44 | ~1886 |
| Paul Connolly | Son | — | 4 | ~1926 |
| Kathryn Connolly | Daughter | — | 2 | ~1928 |
Census Appearances
1920
Jones, Iowa
Head, age 34
Jones, Iowa · implied b. ~1886 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Connolly |
| Given Name | James J |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | Printer |
| Industry | Daily Newspaper |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Jones, Iowa
Head, age 44
Jones, Iowa · implied b. ~1886 — 4 household members
| Surname | Connolly |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 21 |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | Laborer |
| Industry | Implement Factory |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 1500 |
| Veteran | No |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Jones-County, Iowa
Head, age 54
Jones-County, Iowa · implied b. ~1886 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Connolley |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Monticello City |
| 1935 Residence (County) | Jones |
| Occupation | Janitor |
| Industry | Parochial School |
| Class of Worker | PW |
| Hours Worked | 54 |
| Income (1939) | 700 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 Connolly across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Connolly
Head · 1930 · age 44 · b. ~1886 · Iowa
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Jones, Iowa
Open full size
1930 US Federal Census — Jones, Iowa
Page Contents
50 people indexed on this census page (ia:1930:iowacensus00reel662:0366)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | George Sutherland | 55 | Lodger | Carpenter | Iowa |
| 2 | Maurice Long | 26 | Lodger | Manager | Iowa |
| 3 | Leroy Clark | 47 | Head | Driller | Iowa |
| 4 | Lena Clark | 49 | Wife | — | Germany |
| 5 | Grace Siemers | 24 | Niece | Teacher | Illinois |
| 6 | John Siemers | 69 | Head | — | Germany |
| 7 | Henry Siemers | 17 | Son | — | Iowa |
| 8 | Gus Geers | 69 | Head | — | Germany |
| 9 | Annie Geers | 69 | Wife | — | Germany |
| 10 | Ida Geers | 54 | Daughter | — | Iowa |
| 11 | James Connolly THIS PERSON | 44 | Head | Laborer | Iowa |
| 12 | Katherine Connolly | 40 | Wife | — | Iowa |
| 13 | Paul Connolly | 4 | Son | — | Iowa |
| 14 | Kathryn Connolly | 2 | Daughter | — | Iowa |
| 15 | John Linn | 23 | Head | Barman | Iowa |
| 16 | Rebecca Linn | 22 | Wife | — | Iowa |
| 17 | Richard Linn | 4 | Son | — | Iowa |
| 18 | Robert Linn | 2 | Son | — | Iowa |
| 19 | Francis Abbott | 31 | Head | Laborer | Iowa |
| 20 | Margaret Abbott | 23 | Wife | — | Iowa |
| 21 | John Lessmann | 53 | Head | Electrician | Switzerland |
| 22 | Lena Lessmann | 38 | Wife | — | Ohio |
| 23 | Earl Lessmann | 20 | Son | Employee | Iowa |
| 24 | John Lessmann | 18 | Son | Attendant | Iowa |
| 25 | Laura Lessmann | 13 | Daughter | — | Iowa |
| 26 | Muriel Martin | 23 | Lodger | Waitress | North Dakota |
| 27 | Mary Gusbrunner | 16 | Lodger | Servant | Iowa |
| 28 | Mabel Grimm | 39 | Lodger | Employee | Wisconsin |
| 29 | Victor Adamson | 34 | Head | Deliveryman | Iowa |
| 30 | Minnie Adamson | 27 | Wife | — | Iowa |
| 31 | Betty Adamson | 2 | Daughter | — | Iowa |
| 32 | Frank Mccollum | 12 | Step-son | — | Pennsylvania |
| 33 | Sam Warming | 53 | Head | Proprietor | Russia |
| 34 | Bertha Warming | 44 | Wife | — | Russia |
| 35 | Meyer Warming | 20 | Son | — | Russia |
| 36 | Edward Linn | 37 | Head | Proprietor | Illinois |
| 37 | Eva Linn | 36 | Wife | Operator | Iowa |
| 38 | Maxine Linn | 11 | Daughter | — | Iowa |
| 39 | Vernon J. Ganson | 39 | Head | Brick Layer | Iowa |
| 40 | Nettie Ganson | 31 | Wife | Dishwasher | Iowa |
| 41 | Alice-Ab Ganson | 17 | Daughter | — | Iowa |
| 42 | Pearl Ganson | 14 | Daughter | — | Iowa |
| 43 | Joan Ganson | 10 | Daughter | — | Iowa |
| 44 | Ralph Lambert | 35 | Head | Carrier | Iowa |
| 45 | Evelin Lambert | 30 | Wife | Proprietor | Iowa |
| 46 | Glenn Lambert | 9 | Son | — | Iowa |
| 47 | Harry Eastwood | 42 | Lodger | Dealer | Iowa |
| 48 | Will Marshall | 51 | Head | Butcher | England |
| 49 | Annie Marshall | 47 | Wife | — | Wisconsin |
| 50 | Marshall Zwerfel | 9 | Grandnephew | — | Wisconsin |
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)