RK
Robert Kerr — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Ionia-County, Michigan
Our Model Tree links this Robert Kerr across the 1930 and 1940 US Censuses in Ionia-County, Michigan (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 8-person household.
Age 11
b. ~1929
Male
Son
Born: Michigan
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Ionia-County, Michigan |
| Surname | Kerr |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Berlin Township |
| 1935 Residence (County) | Ionia |
| Additional Details | |
| Highest Grade | G 4 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Township / Ward | Berlin Township |
| Est. Birth Year | ~1929 |
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 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| John Kerr | Son | — | 9 | ~1931 |
| Walter Kerr | Son | — | 22 | ~1918 |
| Hannah Kerr | Spouse | — | 48 | ~1892 |
| William Kerr | Son | — | 6 | ~1934 |
| Frank Kerr | Head | — | 47 | ~1893 |
| Gertrude Kerr | Other | — | 68 | ~1872 |
| Robert Kerr | Son | — | 11 | ~1929 |
| Betty Kerr | Daughter | — | 12 | ~1928 |
Census Appearances
1930
Ionia, Michigan
Son, age 1
Ionia, Michigan · implied b. ~1929 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kerr |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Germany |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Ionia-County, Michigan
Son, age 11
Ionia-County, Michigan · implied b. ~1929 — 8 household members
| Surname | Kerr |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Berlin Township |
| 1935 Residence (County) | Ionia |
| Highest Grade | G 4 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
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 Kerr across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Kerr
Son · 1940 · age 11 · b. ~1929 · Michigan
★ You are viewing this record
Sibling
Walter Kerr
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Betty Kerr
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Kerr
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Kerr
Sibling · 1940 · age 6
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 — Ionia-County, Michigan
Open full size
1940 US Federal Census — Ionia-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01764-00144)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Head Bowen-Lillian | None | F | Cafe | — |
| 2 | F. Tapie | 19 | Daughter | Waitress | Michigan |
| 3 | Frank Kerr | 47 | Head | Truck Driver | Michigan |
| 4 | Hannah Kerr | 48 | Wife | — | Switzerland |
| 5 | Walter Kerr | 22 | Son | Helper | Michigan |
| 6 | Betty Kerr | 12 | Daughter | — | Michigan |
| 7 | Robert Kerr THIS PERSON | 11 | Son | — | Michigan |
| 8 | John Kerr | 9 | Son | — | Michigan |
| 9 | William Kerr | 6 | Son | — | Michigan |
| 10 | Gertrude Kerr | 68 | Mother | — | Michigan |
| 11 | Albert Hampshire | 50 | Head | Farming | Indiana |
| 12 | Arthur Hampshire | 17 | Son | Farming | Missouri |
| 13 | John Smith | 63 | Lodger | Labourer | Illinois |
| 14 | Floyd Hampshire | 26 | Head | Labourer | Michigan |
| 15 | Kathryn Hampshire | 25 | Wife | — | Indiana |
| 16 | Grace Hampshire | 7 | Daughter | — | Michigan |
| 17 | Delores Hampshire | 5 | Daughter | — | Michigan |
| 18 | Carol Hampshire | 4 | Daughter | — | Michigan |
| 19 | Rachel French | 58 | Head | — | Kansas |
| 20 | Charles French | 22 | Son | Farming | Kansas |
| 21 | Ethel Fowler | 52 | Sister-in-law | — | Kansas |
| 22 | Ray D. Bartlett | 48 | Head | Labourer | Michigan |
| 23 | Ilo Bartlett | 46 | Wife | — | Michigan |
| 24 | Robert Bartlett | 22 | Son | Labourer | Michigan |
| 25 | Lena Bartlett | 17 | Daughter | — | Michigan |
| 26 | Howard Day | 20 | Head | Labourer | Michigan |
| 27 | Elsie Day | 21 | Wife | Bench Operator | Michigan |
| 28 | George Day | 57 | Head | Carpenter | Michigan |
| 29 | Lelia Day | 46 | Wife | — | Michigan |
| 30 | Charles Donnenworth | 45 | Head | Carpenter | Michigan |
| 31 | Altha Donnenworth | 35 | Wife | — | Michigan |
| 32 | Mabel Donnenworth | 15 | Daughter | — | Michigan |
| 33 | Warren Donnenworth | 10 | Son | — | Michigan |
| 34 | Henry Jackson | 65 | Head | Supt. | Illinois |
| 35 | Ida Jackson | 61 | Wife | Matron | Michigan |
| 36 | Thomas Mitchell | 6 | Boarder | — | Michigan |
| 37 | Jessie Sweet | 60 | Head | Fireman | Michigan |
| 38 | Betty Sweet | 60 | Wife | Matron/Helper | Michigan |
| 39 | Charles Barnard | 61 | Inmate | — | United States |
| 40 | John Crone | 85 | Inmate | — | United States |
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)