JC
John Connelly — 1930 US Census Record
Model Tree available1930 United States Federal Census · Polk, Iowa
Our Model Tree links this John Connelly across the 1920, 1930 and 1940 US Censuses in Polk, Iowa (XGBoost, ~Confirmed), with identified parents John & Fern — first a son (b.~1918), then head of a 11-person household.
Age 12
b. ~1918
Male
Son
Born: Iowa
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Polk, Iowa |
| Surname | Connelly |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Des Moines City |
| Est. Birth Year | ~1918 |
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 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Bernard Connelly | Son | — | 9 | ~1921 |
| Charley Clarke | Other | — | 53 | ~1877 |
| Richard Connelly | Son | — | 8 | ~1922 |
| Marcella Connelly | Daughter | — | 2 | ~1928 |
| Mary Connelly | Daughter | — | ~1930 | |
| John Connelly | Son | — | 12 | ~1918 |
| Eleanor Connelly | Daughter | — | 7 | ~1923 |
| Irene Connelly | Other | — | 35 | ~1895 |
| Margaret Connelly | Daughter | — | 6 | ~1924 |
| Leola Lydon | Other | — | 21 | ~1909 |
| John Connelly | Head | — | 39 | ~1891 |
Census Appearances
1920
Polk, Iowa
Son, age 1
Polk, Iowa · implied b. ~1919 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Connolly |
| Given Name | John Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | none |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Polk, Iowa
Son, age 12
Polk, Iowa · implied b. ~1918 — 11 household members
| Surname | Connelly |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
Son, age 22
Polk-County, Iowa · implied b. ~1918 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Connolly |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines City |
| 1935 Residence (County) | Polk |
| Industry | 250 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same house |
| 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 John Connelly across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Connolly (~0.92 confidence) and mother Fern Connolly (~0.92 confidence) and mother Fern Connolly (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Connolly
b. ~1893
Source father
● Household
· direct · ~0.92
Mother
Fern Connolly
b. ~1895
Source mother
● Household
· direct · ~0.92
Mother
Fern Connolly
b. ~1895
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Connelly
Son · 1930 · age 12 · b. ~1918 · Iowa
★ You are viewing this record
Sibling
Bernard Connelly
Sibling · 1930 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Connelly
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eleanor Connelly
Sibling · 1930 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marcella Connelly
Sibling · 1930 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Connelly
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Connelly
Sibling · 1930 · age
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 — Polk, Iowa
Open full size
1930 US Federal Census — Polk, Iowa
Page Contents
50 people indexed on this census page (ia:1930:iowacensus00reel673:0558)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Robert H Merriam | 78 | Head | — | Canada English |
| 2 | Nicola Merriam | 63 | Wife-H | — | Pennsylvania |
| 3 | Robert Merriam | 36 | Head | Proprietor | Canada English |
| 4 | Eura M Merriam | 36 | Wife-H | — | Illinois |
| 5 | Robert W Merriam | 11 | Son | — | Iowa |
| 6 | Eura Jean Merriam | 8 | Daughter | — | Iowa |
| 7 | Grace E Hall | 43 | Head | Domestic Worker | Illinois |
| 8 | Curtis E Pheal | 23 | Head | Traffic Representative | Illinois |
| 9 | Marian I Pheal | 25 | Wife-H | — | Illinois |
| 10 | Barbara A Pheal | 3 | Daughter | — | Iowa |
| 11 | Leslie L Koak | 57 | Head | Proprietor | Iowa |
| 12 | Minnie M Koak | 56 | Wife-H | — | Iowa |
| 13 | Earl M Jones | 37 | Head | Carpenter | Iowa |
| 14 | Hazel Jones | 38 | Wife-H | — | Iowa |
| 15 | Donald Jones | 14 | Son | — | Iowa |
| 16 | Kenneth Jones | 12 | Son | — | Montana |
| 17 | James E Logan | 44 | Head | Manager-Used Car | Iowa |
| 18 | Bessie V Logan | 42 | Wife-H | — | Iowa |
| 19 | Evelyn J Logan | 22 | Daughter | Cashier | Iowa |
| 20 | Velma Logan | 20 | Daughter | — | Iowa |
| 21 | Kenneth Logan | 18 | Son | — | Iowa |
| 22 | Mary Logan | 15 | Daughter | — | Minnesota |
| 23 | James E Logan | 13 | Son | — | Iowa |
| 24 | Anna Logan | 11 | Daughter | — | Iowa |
| 25 | Betty J Logan | 8 | Daughter | — | Iowa |
| 26 | John M Connelly | 39 | Head | Lawyer | Iowa |
| 27 | Irene M Connelly | 35 | Wife-H | — | Iowa |
| 28 | John Connelly THIS PERSON | 12 | Son | — | Iowa |
| 29 | Bernard Connelly | 9 | Son | — | Iowa |
| 30 | Richard Connelly | 8 | Son | — | Iowa |
| 31 | Eleanor Connelly | 7 | Daughter | — | Iowa |
| 32 | Margaret Connelly | 6 | Daughter | — | Iowa |
| 33 | Marcella Connelly | 2 | Daughter | — | Iowa |
| 34 | Mary Alice Connelly | 0 | Daughter | — | Iowa |
| 35 | Leola Lydon | 21 | Servant | Servant | Iowa |
| 36 | Charley Clarke | 53 | Gardner | Gardner | Vermont |
| 37 | Vincent L Robaugh | 44 | Head | Engineer | Kansas |
| 38 | Mary Robaugh | 45 | Wife-H | — | Pennsylvania |
| 39 | Vincent L Robaugh | 13 | Son | — | Iowa |
| 40 | John V Robaugh | 9 | Son | — | Iowa |
| 41 | Cornel E Stivers | 48 | Head | Pressman | Iowa |
| 42 | Blanche Stivers | 46 | Wife-H | — | Iowa |
| 43 | Mildred Stivers | 17 | Daughter | — | Iowa |
| 44 | Russell Stivers | 13 | Son | — | Iowa |
| 45 | David Stivers | 9 | Son | — | Iowa |
| 46 | Clement Bogart | 81 | Father-in-law | — | Iowa |
| 47 | Clarence Whitmore | 34 | Head | Minister Gospel | Minnesota |
| 48 | Lola Whitmore | 33 | Wife-H | — | Minnesota |
| 49 | Raymond Whitmore | 12 | Son | — | Minnesota |
| 50 | Stanley Whitmore | 5 | Son | — | Minnesota |
Pedigree Summary
John + 6 siblings
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
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)