RM
Ruby Martin — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Montgomery, Illinois
Our Model Tree links this Ruby Martin across the 1920 and 1930 US Censuses in Montgomery, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1917), then head of a 7-person household.
Age 13
b. ~1917
Female
Daughter
Born: Illinois
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Montgomery, Illinois |
| Surname | Martin |
| Given Name | Ruby A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Litchfield City |
| Est. Birth Year | ~1917 |
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.
7 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Ruby | Age | Birth yr |
|---|---|---|---|---|
| Leo Martin | Son | — | 15 | ~1915 |
| Julia Martin | Spouse | — | 51 | ~1879 |
| Charles Martin | Son | — | 19 | ~1911 |
| Kenneth Martin | Son | — | 17 | ~1913 |
| Ruby Martin | Daughter | — | 13 | ~1917 |
| Albert Martin | Head | — | 56 | ~1874 |
| Harold Martin | Son | — | 11 | ~1919 |
Census Appearances
1920
Montgomery, Illinois
Daughter, age 3
Montgomery, Illinois · implied b. ~1917 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Ruby O. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Montgomery, Illinois
Daughter, age 13
Montgomery, Illinois · implied b. ~1917 — 7 household members
| Surname | Martin |
| Given Name | Ruby A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| 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 Ruby Martin across 2 US Census years (1920 and 1930) in Montgomery, Illinois, using XGBoost record linkage.
Show:
This person
Anchor record
Ruby Martin
Daughter · 1930 · age 13 · b. ~1917 · Illinois
★ You are viewing this record
Sibling
Leo Martin
Sibling · 1930 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Martin
Sibling · 1930 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kenneth Martin
Sibling · 1930 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harold Martin
Sibling · 1930 · age 11
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 — Montgomery, Illinois
Open full size
1930 US Federal Census — Montgomery, Illinois
Page Contents
50 people indexed on this census page (ia:1930:illinoiscensus00reel545:0345)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Mary E. Farmer | 38 | Head | Cook | Illinois |
| 52 | William H. Farmer | 15 | Son | — | Illinois |
| 53 | Albert E. Farmer | 11 | Son | — | Illinois |
| 54 | Betty B. Farmer | 6 | Daughter | — | Illinois |
| 55 | Albert F. Ellen | 38 | Head | Laborer | Illinois |
| 56 | Lillian F. Ellen | 28 | Wife | — | Illinois |
| 57 | Frances M. Ellen | 7 | Daughter | — | Illinois |
| 58 | Frank A. Grummon | 58 | Head | Watchman | United States |
| 59 | Amelia W. Grummon | 57 | Wife | — | Missouri |
| 60 | Russel J. Grummon | 24 | Son | Bookkeeper | Illinois |
| 61 | Leland W. Grummon | 19 | Son | — | Illinois |
| 62 | George H. Helgen | 50 | Head | Laborer | Missouri |
| 63 | Mary Helgen | 46 | Sister | Supervisor | Illinois |
| 64 | John M. Helgen | 43 | Brother | Proprietor | Illinois |
| 65 | Frances Helgen | 41 | Sister | — | Illinois |
| 66 | Edward B. Helgen | 36 | Brother | Proprietor | Illinois |
| 67 | Katie B. Lewis | 58 | Head | Proprietor | Missouri |
| 68 | Ingle Julia M. Lewis | 25 | Son | Laborer | Illinois |
| 69 | Frances Jackson | 27 | Roomer | Cook | Missouri |
| 70 | Albert R. Martin | 56 | Head | Carpenter | Illinois |
| 71 | Julia C. Martin | 51 | Wife | Paper Hanger | Illinois |
| 72 | Charles B. Martin | 19 | Son | Baker Helper | Illinois |
| 73 | Kenneth L. Martin | 17 | Son | Salesman | Illinois |
| 74 | Leo A. Martin | 15 | Son | — | Illinois |
| 75 | Ruby A. Martin THIS PERSON | 13 | Daughter | — | Illinois |
| 76 | Harold Leroy Martin | 11 | Son | — | Illinois |
| 77 | Maria H. Keller | 71 | Head | — | New York |
| 78 | Charles A. Keller | 46 | Son | Yardman | Missouri |
| 79 | Edward H. Keller | 39 | Son | Carpenter | Illinois |
| 80 | Mary A. Keller | 36 | Daughter | Stenographer | Illinois |
| 81 | James J. Ronen | 37 | Head | Proprietor | Illinois |
| 82 | Monette Ronen | 32 | Wife | — | Pennsylvania |
| 83 | James Jr. Ronen | 5 | Son | — | Illinois |
| 84 | William J. Ronen | 1 | Son | — | Illinois |
| 85 | John O'Brien | 53 | Head | Laborer | Illinois |
| 86 | Mary A. O'Brien | 64 | Sister | — | Ireland Free State |
| 87 | Roy W. Simmons | 26 | Head | Hand Cutter | Illinois |
| 88 | Alice E. Simmons | 22 | Wife | — | Illinois |
| 89 | Robert F. Simmons | 1 | Son | — | Illinois |
| 90 | Joseph E. Gehrig | 44 | Head | Teamster | Illinois |
| 91 | Alpha M. Gehrig | 47 | Wife | — | Illinois |
| 92 | Mary E. Gehrig | 12 | Daughter | — | Illinois |
| 93 | Melvin H. Gehrig | 11 | Son | — | Illinois |
| 94 | Marion E. Gehrig | 7 | Son | — | Illinois |
| 95 | Dorothea J. Rainey | 47 | Head | Proprietor | Indiana |
| 96 | Maurice C. Johnson | 19 | Son | — | North Dakota |
| 97 | Harold W. Johnson | 17 | Son | — | North Dakota |
| 98 | Carroll John M. Rainey | 66 | Roomer | Laborer | Kentucky |
| 99 | Emily Pritt | 72 | Roomer | Housekeeper | Illinois |
| 100 | Alvin W. Rhoads | 75 | Head | Painter | 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)