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James Robertson — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Cook, Illinois
Our Model Tree links this James Robertson across the 1930 and 1940 US Censuses in Cook, Illinois (XGBoost, ~Confirmed) — first a son (b.~1925), then head of a 10-person household.
Age 5
b. ~1925
Male
Son
Born: Illinois
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | Robertson |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Illinois |
| Additional Details | |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Oak Forest Village |
| Est. Birth Year | ~1925 |
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.
10 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Virginia Robertson | Daughter | — | 10 | ~1920 |
| Eva Robertson | Daughter | — | 8 | ~1922 |
| Floyd Robertson | Head | — | 53 | ~1877 |
| Lester Robertson | Son | — | 3 | ~1927 |
| Clarence Robertson | Son | — | 12 | ~1918 |
| John Robertson | Son | — | 15 | ~1915 |
| James Robertson | Son | — | 5 | ~1925 |
| Ray Robertson | Son | — | 1 | ~1929 |
| Floyd Robertson | Son | — | 21 | ~1909 |
| Flora Robertson | Spouse | — | 41 | ~1889 |
Census Appearances
1930
Cook, Illinois
Son, age 5
Cook, Illinois · implied b. ~1925 — 10 household members
| Surname | Robertson |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 16
Cook-County, Illinois · implied b. ~1924 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Roberts |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Highest Grade | H 3 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Robertson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Robertson
Son · 1930 · age 5 · b. ~1925 · Illinois
★ You are viewing this record
Sibling
John Robertson
Sibling · 1930 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lester Robertson
Sibling · 1930 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ray Robertson
Sibling · 1930 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eva Robertson
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Virginia Robertson
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Clarence Robertson
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Floyd Robertson
Sibling · 1930 · age 21
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 — Cook, Illinois
Open full size
1930 US Federal Census — Cook, Illinois
Page Contents
50 people indexed on this census page (ia:1930:illinoiscensus00reel560:0328)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Lulu | 17 | Daughter | — | Illinois |
| 2 | Mabel | 11 | Daughter | — | Illinois |
| 3 | Earl | 15 | Son | — | Illinois |
| 4 | George M | 52 | Brother in law | Fisherman | Illinois |
| 5 | Mildred | 5 | Niece | — | Illinois |
| 6 | Lester | 4 | Nephew | — | Illinois |
| 7 | Lillian | 14 | Niece | — | Illinois |
| 8 | Dorothy | 12 | Niece | — | Illinois |
| 9 | Gladys | 10 | Niece | — | Illinois |
| 10 | Bernice | 7 | Niece | — | Illinois |
| 11 | William | 21 | Nephew | Fisherman | Illinois |
| 12 | Lillian | 20 | Niece | — | Illinois |
| 13 | Margaret M | 14 | Stepdaughter | — | Illinois |
| 14 | James | 10 | Stepson | — | Illinois |
| 15 | Raymond Scanlan | 32 | Head | Fisherman | Illinois |
| 16 | Gertrude K Scanlan | 25 | Wife | — | Illinois |
| 17 | Robert Scanlan | 7 | Son | — | Illinois |
| 18 | Fred S Mcquinn | 62 | Head | Fisherman | Illinois |
| 19 | Sarah E Mcquinn | 55 | Wife | — | Illinois |
| 20 | Fred Jr Mcquinn | 21 | Son | Fisherman | Illinois |
| 21 | James Mcquinn | 10 | Son | — | Illinois |
| 22 | Lillian Mcquinn | 8 | Daughter | — | Illinois |
| 23 | William Mcquinn | 5 | Son | — | Illinois |
| 24 | Lunsford R Mccombs | 51 | Head | Fisherman | Illinois |
| 25 | Lulu Mccombs | 49 | Wife | — | Illinois |
| 26 | Ralph Mccombs | 20 | Son | Fisherman | Illinois |
| 27 | Lester Mccombs | 15 | Son | — | Illinois |
| 28 | Lee Morgan | 23 | Head | Fisherman | Illinois |
| 29 | Floyd Robertson | 53 | Head | Fisherman | Kentucky |
| 30 | Flora Robertson | 41 | Wife | — | Illinois |
| 31 | Floyd Jr Robertson | 21 | Son | Fisherman | Illinois |
| 32 | John Robertson | 15 | Son | Fisherman | Illinois |
| 33 | Clarence Robertson | 12 | Son | Fisherman | Illinois |
| 34 | Virginia Robertson | 10 | Daughter | — | Illinois |
| 35 | Eva Robertson | 8 | Daughter | — | Illinois |
| 36 | James Robertson THIS PERSON | 5 | Son | — | Illinois |
| 37 | Lester Robertson | 3 | Son | — | Illinois |
| 38 | Ray Robertson | 1 | Son | — | Illinois |
| 39 | Elmer Smith | 29 | Head | Fisherman | Illinois |
| 40 | Irene Smith | 17 | Wife | — | Illinois |
| 41 | Fred Hopper | 49 | Head | Fisherman | Illinois |
| 42 | Mary Hopper | 45 | Wife | — | Iowa |
| 43 | Frank Hopper | 11 | Son | — | Iowa |
| 44 | Mary Hopper | 10 | Daughter | — | Iowa |
| 45 | Eddie M Hopper | 1 | Daughter | — | Illinois |
| 46 | Frank Williams | 71 | Head | Fisherman | Illinois |
| 47 | Mary P Williams | 24 | Wife | — | Illinois |
| 48 | Frank Williams | 5 | Son | — | Illinois |
| 49 | George Devore | 55 | Head | Fisherman | Illinois |
| 50 | Lulu Devore | 41 | Wife | — | Illinois |
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)