MR
Mary Robertson — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Sangamon, Illinois
Our Model Tree links this Mary Robertson across the 1920 and 1930 US Censuses in Sangamon, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1918), then head of a 9-person household.
Age 12
b. ~1918
Female
Daughter
Born: Illinois
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Sangamon, Illinois |
| Surname | Robertson |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Additional Details | |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Springfieldcity Part Of |
| 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.
9 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Neva Hart | Daughter | — | 21 | ~1909 |
| Dorothy Robertson | Daughter | — | 18 | ~1912 |
| Mary Robertson | Daughter | — | 12 | ~1918 |
| Jw Robertson | Head | — | 60 | ~1870 |
| George Hart | Other | — | 22 | ~1908 |
| Milton Robertson | Son | — | 14 | ~1916 |
| William Robertson | Son | — | 36 | ~1894 |
| Fred Robertson | Son | — | 16 | ~1914 |
| Mary Robertson | Spouse | — | 57 | ~1873 |
Census Appearances
1920
Sangamon, Illinois
Daughter, age 2
Sangamon, Illinois · implied b. ~1918 — 12 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Robertson |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Sangamon, Illinois
Daughter, age 12
Sangamon, Illinois · implied b. ~1918 — 9 household members
| Surname | Robertson |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Can Read/Write | Yes |
| 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 Mary Robertson across 2 US Census years (1920 and 1930) in Sangamon, Illinois, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Robertson
Daughter · 1930 · age 12 · b. ~1918 · Illinois
★ You are viewing this record
Sibling
William Robertson
Sibling · 1930 · age 36
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Neva Hart
Sibling · 1930 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Milton Robertson
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Robertson
Sibling · 1930 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Fred Robertson
Sibling · 1930 · age 16
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 — Sangamon, Illinois
Open full size
1930 US Federal Census — Sangamon, Illinois
Page Contents
50 people indexed on this census page (ia:1930:illinoiscensus00reel559:0907)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Kenneth Hayston | 8 | son | None | Illinois |
| 2 | Fred Rhodes | 59 | Head | Coal Miner | Iowa |
| 3 | Jennie Rhodes | 52 | wife | None | Iowa |
| 4 | Carl Rhodes | 15 | son | None | Iowa |
| 5 | William Proctor | 39 | Head | Foreman | Illinois |
| 6 | Laura Proctor | 41 | wife | None | Illinois |
| 7 | Joseph R.B. Proctor | 21 | son | None | Illinois |
| 8 | Betty Proctor | 17 | daughter | Presser | Illinois |
| 9 | William Proctor | 14 | son | None | Arkansas |
| 10 | James Proctor | 11 | son | None | Oklahoma |
| 11 | Colleen Proctor | 8 | daughter | None | Illinois |
| 12 | George Proctor | 5 | son | None | Illinois |
| 13 | Lorna J. Proctor | 2 | daughter | None | Illinois |
| 14 | John Proctor | 0 | son | None | Illinois |
| 15 | George Delong | 38 | Head | Foreman | Missouri |
| 16 | Priscilla Delong | 34 | wife | None | Illinois |
| 17 | Joseph F. Delong | 13 | son | None | Illinois |
| 18 | Priscilla Delong | 11 | daughter | None | Illinois |
| 19 | George Delong | 9 | son | None | Illinois |
| 20 | Catherine Delong | 7 | daughter | None | Illinois |
| 21 | Lydia I. Delong | 4 | daughter | None | Illinois |
| 22 | James Delong | 2 | son | None | Illinois |
| 23 | Isabelle Delong | 1 | daughter | None | Illinois |
| 24 | F.A. Rape | 58 | Head | None | Ohio |
| 25 | William Wittger | 49 | boarder | Laborer | Illinois |
| 26 | Martha Franklin | 53 | Head | None | Connecticut |
| 27 | David Grayson | 27 | boarder | Laborer | Louisiana |
| 28 | John Doblin | 77 | Head | Mail Carrier | Pennsylvania |
| 29 | Bernice Doblin | 24 | wife | None | Illinois |
| 30 | Charles H. Walden | 62 | Head | None | United States |
| 31 | Leslie Rope | 22 | Head | Laborer | Illinois |
| 32 | Helen Rope | 26 | wife | None | Germany |
| 33 | J.W. Robertson | 60 | Head | Machinist | Illinois |
| 34 | Mary A. Robertson | 57 | wife | None | Illinois |
| 35 | William Robertson | 36 | son | None | Illinois |
| 36 | Dorothy Robertson | 18 | daughter | Salesgirl | Illinois |
| 37 | Fred Robertson | 16 | son | Ditch Digger | Illinois |
| 38 | Milton Robertson | 14 | son | None | Illinois |
| 39 | Mary Robertson THIS PERSON | 12 | daughter | None | Illinois |
| 40 | George Hart | 22 | son-in-law | Truck Driver | Illinois |
| 41 | Neva E. Hart | 21 | daughter | Salesgirl | Illinois |
| 42 | Samuel Miller | 65 | Head | None | Illinois |
| 43 | Litha Miller | 55 | wife | None | Illinois |
| 44 | Fred Miller | 19 | son | Tester | Illinois |
| 45 | Millard Kisor | 38 | Head | Grass Cutter | Illinois |
| 46 | Clara Kisor | 35 | wife | None | Illinois |
| 47 | Robert Kisor | 15 | son | None | Illinois |
| 48 | Claire Kisor | 13 | daughter | None | Illinois |
| 49 | Agnes Kisor | 11 | daughter | None | Illinois |
| 50 | Lillian Kisor | 10 | daughter | None | 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)