RJ
Robert Jennings — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Mccook, South Dakota
Our Model Tree links this Robert Jennings across the 1920 and 1930 US Censuses in Mccook, South Dakota (XGBoost, ~Confirmed) — first a son (b.~1919), then head of a 11-person household.
Age 11
b. ~1919
Male
Son
Born: South Dak
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Mccook, South Dakota |
| Surname | Jennings |
| Given Name | Robert L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | South Dak |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Additional Details | |
| Can Read/Write | Yes |
| Birthplace (normalized) | south dak |
| Township / Ward | Canistota City Second Ward |
| Est. Birth Year | ~1919 |
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 Robert | Age | Birth yr |
|---|---|---|---|---|
| Helena Jennings | Daughter | — | 16 | ~1914 |
| Marie Jennings | Daughter | — | 4 | ~1926 |
| Earl Jennings | Son | — | 18 | ~1912 |
| Irwin Jennings | Head | — | 43 | ~1887 |
| Irwin Jennings | Son | — | 15 | ~1915 |
| Raymond Jennings | Son | — | 19 | ~1911 |
| Robert Jennings | Son | — | 11 | ~1919 |
| Jean Jennings | Daughter | — | 7 | ~1923 |
| Helena Jennings | Spouse | — | 39 | ~1891 |
| Jerome Jennings | Son | — | 1 | ~1929 |
| Lucidella Jennings | Daughter | — | 9 | ~1921 |
Census Appearances
1920
Mccook, South …
Son, age 2
Mccook, South Dakota · implied b. ~1918 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jennings |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | South Dak |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Birthplace (normalized) | south dak |
1930
Mccook, South …
Son, age 11
Mccook, South Dakota · implied b. ~1919 — 11 household members
| Surname | Jennings |
| Given Name | Robert L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | South Dak |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Birthplace (normalized) | south dak |
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 Robert Jennings across 2 US Census years (1920 and 1930) in Mccook, South Dakota, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Jennings
Son · 1930 · age 11 · b. ~1919 · South Dakota
★ You are viewing this record
Sibling
Jean Jennings
Sibling · 1930 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lucidella Jennings
Sibling · 1930 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Irwin Jennings
Sibling · 1930 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helena Jennings
Sibling · 1930 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marie Jennings
Sibling · 1930 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jerome Jennings
Sibling · 1930 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Earl Jennings
Sibling · 1930 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Raymond Jennings
Sibling · 1930 · age 19
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 — Mccook, South Dakota
Open full size
1930 US Federal Census — Mccook, South Dakota
Page Contents
50 people indexed on this census page (ia:1930:15thcensus2226unit:0886)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Nellie V. Reid | 51 | Head | Sales Lady | Minnesota |
| 52 | Marie S. Reid | 22 | Daughter | Secretary | South Dak |
| 53 | Lola B. Reid | 17 | Daughter | — | South Dak |
| 54 | Lola M. Reid | 14 | Daughter | — | South Dak |
| 55 | Carl E. Wick | 40 | Head | Laborer | Sweden |
| 56 | Manda O. Wick | 30 | Wife | — | Minnesota |
| 57 | Hjalmar Wick | 33 | Brother | Laborer | Sweden |
| 58 | Irwin A. Jennings | 43 | Head | Farmer | Iowa |
| 59 | Helena M. Jennings | 39 | Wife | — | Iowa |
| 60 | Raymond P. Jennings | 19 | Son | — | Iowa |
| 61 | Earl A. Jennings | 18 | Son | Laborer | Iowa |
| 62 | Helena Jennings | 16 | Daughter | — | Iowa |
| 63 | Irwin B. Jennings | 15 | Son | — | Iowa |
| 64 | Robert L. Jennings THIS PERSON | 11 | Son | — | South Dak |
| 65 | Lucidella Jennings | 9 | Daughter | — | South Dak |
| 66 | Jean M. Jennings | 7 | Daughter | — | South Dak |
| 67 | Marie S. Jennings | 4 | Daughter | — | South Dak |
| 68 | Jerome J. Jennings | 1 | Son | — | South Dak |
| 69 | Blanch H. Rogers | 30 | Head | Laborer | Iowa |
| 70 | Delia M. Rogers | 27 | Wife | — | Nebraska |
| 71 | Mardella A. Rogers | 8 | Daughter | — | South Dak |
| 72 | William Welch | 71 | Head | Grain Buyer | Illinois |
| 73 | Geo H. Dawson | 58 | Head | Proprietor | Minnesota |
| 74 | Clara M. Dawson | 53 | Wife | — | Minnesota |
| 75 | George S. Dawson | 18 | Son | — | Washington |
| 76 | Harry G. Dawson | 16 | Son | — | South Dak |
| 77 | Donald T. Dawson | 14 | Son | — | California |
| 78 | Tideman M. Helgerson | 34 | Head | Farmer | South Dak |
| 79 | Alice G. Helgerson | 30 | Wife | — | Minnesota |
| 80 | Gilman G. Helgerson | 8 | Son | — | South Dak |
| 81 | Gulyne J. Helgerson | 3 | Daughter | — | South Dak |
| 82 | Carl M. Johnson | 32 | Head | Chamber Maid | Wisconsin |
| 83 | Anna B. Johnson | 30 | Daughter | Waitress | South Dak |
| 84 | Herman C. Johnson | 28 | Son | Chamber Maid | South Dak |
| 85 | Amanda Johnson | 27 | Boarder | — | Nebraska |
| 86 | John J. Arnold | 72 | Head | Laborer | Wisconsin |
| 87 | Elizabeth B. Arnold | 66 | Wife | — | Canada Eng |
| 88 | Lloyd H. Arnold | 38 | Son | — | South Dak |
| 89 | A. Mae Arnold | 41 | Daughter | — | South Dak |
| 90 | Johanna Schomer | 79 | Head | — | Germany |
| 91 | George Goettman | 63 | Head | Shoe Repairer | Germany |
| 92 | Barrett T. Rose | 58 | Head | Farmer | Minnesota |
| 93 | Agnes Rose | 41 | Wife | — | South Dak |
| 94 | Joy E. Rose | 14 | Daughter | — | South Dak |
| 95 | Lester E. Rose | 12 | Daughter | — | South Dak |
| 96 | Garrett G. Rose | 11 | Son | — | South Dak |
| 97 | Ida Mae Rose | 9 | Daughter | — | South Dak |
| 98 | Mary A. Rose | 7 | Daughter | — | South Dak |
| 99 | Belle J. Rose | 5 | Daughter | — | South Dak |
| 100 | Louis Rose | 53 | Head | — | Iowa |
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)