MC
Mary Conrad — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Preble, Ohio
Our Model Tree links this Mary Conrad across the 1920 and 1930 US Censuses in Preble, Ohio (XGBoost, ~Confirmed) — first a daughter (b.~1911), then head of a 10-person household.
Age 19
b. ~1911
Female
Daughter
Born: Ohio
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Preble, Ohio |
| Surname | Conrad |
| Given Name | Mary K. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Additional Details | |
| Occupation | Bookkeeper |
| Industry | Print Shop |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Bookkeeper |
| Township / Ward | Eaton Village |
| Est. Birth Year | ~1911 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Frederick Conrad | Son | — | 12 | ~1918 |
| Sarah Conrad | Daughter | — | 16 | ~1914 |
| Martha Conrad | Daughter | — | 18 | ~1912 |
| Susan Conrad | Spouse | — | 48 | ~1882 |
| William Conrad | Son | — | 15 | ~1915 |
| Esther Conrad | Daughter | — | 7 | ~1923 |
| John Conrad | Head | — | 54 | ~1876 |
| Ruth Conrad | Daughter | — | 9 | ~1921 |
| James Conrad | Son | — | 10 | ~1920 |
| Mary Conrad | Daughter | — | 19 | ~1911 |
Census Appearances
1920
Preble, Ohio
Daughter, age 9
Preble, Ohio · implied b. ~1911 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Conradt |
| Given Name | Mary A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Preble, Ohio
Daughter, age 19
Preble, Ohio · implied b. ~1911 — 10 household members
| Surname | Conrad |
| Given Name | Mary K. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Occupation | Bookkeeper |
| Industry | Print Shop |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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 Conrad across 2 US Census years (1920 and 1930) in Preble, Ohio, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Conrad
Daughter · 1930 · age 19 · b. ~1911 · Ohio
★ You are viewing this record
Sibling
Frederick Conrad
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Conrad
Sibling · 1930 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Conrad
Sibling · 1930 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Esther Conrad
Sibling · 1930 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Conrad
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Martha Conrad
Sibling · 1930 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Sarah Conrad
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 — Preble, Ohio
Open full size
1930 US Federal Census — Preble, Ohio
Page Contents
50 people indexed on this census page (ia:1930:ohiocensus00reel1863:0458)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John A. Conrad | 54 | Head | Merchant | Ohio |
| 2 | Susan M. Conrad | 48 | Wife | — | Ohio |
| 3 | Mary K. Conrad THIS PERSON | 19 | Daughter | Bookkeeper | Ohio |
| 4 | Martha E. Conrad | 18 | Daughter | — | Ohio |
| 5 | Sarah J. Conrad | 16 | Daughter | — | Ohio |
| 6 | William P. Conrad | 15 | Son | — | Ohio |
| 7 | Frederick C. Conrad | 12 | Son | — | Ohio |
| 8 | James G. Conrad | 10 | Son | — | Ohio |
| 9 | Ruth Conrad | 9 | Daughter | — | Ohio |
| 10 | Esther Conrad | 7 | Daughter | — | Ohio |
| 11 | Luther J. Coffman | 56 | Head | Fireman | Virginia |
| 12 | Ida J. Coffman | 54 | Wife | — | Ohio |
| 13 | Robert D. Coffman | 25 | Son | — | Ohio |
| 14 | Paul K. Coffman | 17 | Son | — | Ohio |
| 15 | James Z. Coffman | 14 | Son | — | Ohio |
| 16 | Joseph H. Coffman | 81 | Father | — | Virginia |
| 17 | Samuel J. Fulks | 23 | Son-in-law | Salesman | Indiana |
| 18 | Helen E. Fulks | 22 | Daughter | — | Ohio |
| 19 | Mary J. Fulks | 1 | Gr-Daughter | — | Ohio |
| 20 | Musa Moskey | 48 | Head | — | Syria |
| 21 | George G. Moskey | 23 | Son | Salesman | Ohio |
| 22 | Blanche V. Moskey | 19 | Daughter | Saleslady | Ohio |
| 23 | Joseph E. Moskey | 17 | Son | — | Ohio |
| 24 | Mary Frances Moskey | 13 | Daughter | — | Ohio |
| 25 | Elizabeth J. Moskey | 10 | Daughter | — | Ohio |
| 26 | James L. Sadler | 39 | Head | Baker | Ohio |
| 27 | Edna C. Sadler | 29 | Wife | — | Iowa |
| 28 | Mary E. Sadler | 10 | Daughter | — | Ohio |
| 29 | James L. Jr. Sadler | 8 | Son | — | Ohio |
| 30 | Walter J. Sadler | 2 | Son | — | Ohio |
| 31 | Keith Timmons | 18 | Lodger | Baker | Ohio |
| 32 | J. Alice Timmons | 70 | Head | — | Ohio |
| 33 | Imo C. Schultz | 45 | Head | — | Ohio |
| 34 | Helen E. Schultz | 17 | Daughter | — | Ohio |
| 35 | Walter C. Schultz | 16 | Son | — | Ohio |
| 36 | Herman A. Schultz | 12 | Son | — | Ohio |
| 37 | William H. Schultz | 11 | Son | — | Ohio |
| 38 | Griffin J. Renaman | 64 | Head | — | New York |
| 39 | Henry P. Strobel | 66 | Head | Printer | Ohio |
| 40 | Anna R. Strobel | 64 | Wife | — | Ohio |
| 41 | Clifford H. Strobel | 32 | Son | Bookkeeper | Ohio |
| 42 | Helen C. Strobel | 30 | Daughter | Bookkeeper | Ohio |
| 43 | Carl E. Warrick | 25 | Head | Body Worker | Ohio |
| 44 | Bethel Warrick | 24 | Wife | — | Kentucky |
| 45 | Lathie Webb | 66 | Head | Laundress | Indiana |
| 46 | Andrew P. Beader | 56 | Head | Minister | Michigan |
| 47 | Edna L. Beader | 51 | Wife | — | Ohio |
| 48 | Charles K. Beader | 15 | Son | — | Ohio |
| 49 | Otwell Colvin | 56 | Head | Time Keeper | Ohio |
| 50 | Bertha V. Colvin | 52 | Wife | Seamstress | Ohio |
Related Census Records
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)