MC
Mary Conrad — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Walla Walla, Washington
Our Model Tree links this Mary Conrad across the 1920 and 1930 US Censuses in Walla Walla, Washington (XGBoost, ~Confirmed) — first a daughter (b.~1915), then head of a 8-person household.
Age 15
b. ~1915
Female
Daughter
Born: Washington
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Walla Walla, Washington |
| Surname | Conrad |
| Given Name | Mary M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Switzerland |
| Mother's Birthplace | Washington |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
| Township / Ward | Hill Precinct |
| Est. Birth Year | ~1915 |
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 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Bessie Conrad | Daughter | — | 13 | ~1917 |
| Mary Conrad | Daughter | — | 15 | ~1915 |
| Magdalena Conrad | Other | — | 51 | ~1879 |
| Joseph Conrad | Son | — | 23 | ~1907 |
| Harry Conrad | Son | — | 8 | ~1922 |
| Anna Conrad | Daughter | — | 10 | ~1920 |
| Peter Conrad | Head | — | 58 | ~1872 |
| Grace Conrad | Daughter | — | 18 | ~1912 |
Census Appearances
1920
Walla Walla, …
Daughter, age 5
Walla Walla, Washington · implied b. ~1915 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Conrad |
| Given Name | Magdalena |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Switzerland |
| Mother's Birthplace | Washington |
| Mother Tongue | German |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1930
Walla Walla, …
Daughter, age 15
Walla Walla, Washington · implied b. ~1915 — 8 household members
| Surname | Conrad |
| Given Name | Mary M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Switzerland |
| Mother's Birthplace | Washington |
| Can Read/Write | Yes |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
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 Walla Walla, Washington, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Conrad
Daughter · 1930 · age 15 · b. ~1915 · Washington
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Sibling
Grace Conrad
Sibling · 1930 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anna Conrad
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bessie Conrad
Sibling · 1930 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harry Conrad
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Conrad
Sibling · 1930 · age 23
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 — Walla Walla, Washington
Open full size
1930 US Federal Census — Walla Walla, Washington
Page Contents
50 people indexed on this census page (ia:1930:15thcensus2523unit:0530)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Wayne L. Hartley | 43 | Head | Farmer | Iowa |
| 2 | Evelyn J. Hartley | 49 | Wife-H | — | Tenn. |
| 3 | Ruth Hartley | 7 | Daughter | — | Washington |
| 4 | Helen Hartley | 6 | Daughter | — | Washington |
| 5 | William S. Walter | 58 | Head | — | Illinois |
| 6 | Theresa F. Walter | 52 | Wife-H | Farmer | Iowa |
| 7 | Florence Walter | 11 | Daughter | — | Washington |
| 8 | Samuel V. Colwell | 24 | Head | Farmer | New York |
| 9 | Reta Colwell | 25 | Wife-H | — | Oregon |
| 10 | Lois Reta Colwell | 1 | Daughter | — | Washington |
| 11 | John Anderson | 70 | Head | Farmer | Sweden |
| 12 | George Petrie | 25 | Head | Farmer | Oregon |
| 13 | Sarah Petrie | 30 | Wife-H | — | Missouri |
| 14 | Banta, Janie Petrie | 66 | Mother-in-law | — | Missouri |
| 15 | Joyce Ann Petrie | 1 | Daughter | — | Washington |
| 16 | James A. Monaghan | 61 | Head | Farmer | Iowa |
| 17 | Mary F. Monaghan | 61 | Wife-H | — | Missouri |
| 18 | Raymond L. Reith | 30 | Head | Farmer | Washington |
| 19 | Angie M. Reith | 69 | Mother-H | — | Oregon |
| 20 | Flossie Athos | 37 | Sister | — | Washington |
| 21 | Petra Athos | 7 | Neice | Laborer | Washington |
| 22 | John B. Dakan | 38 | Cousin | — | Washington |
| 23 | Asel H. Burnap | 50 | Head | Truck Driver | Kansas |
| 24 | Irene V. Burnap | 45 | Wife-H | — | Washington |
| 25 | Leland J. Burnap | 19 | Son | — | Washington |
| 26 | Adelaide Burnap | 12 | Daughter | — | Washington |
| 27 | Billy Jim Burnap | 10 | Son | Housekeeper | Washington |
| 28 | Inez C. Helfer | 22 | Head | — | Oregon |
| 29 | Billy Ray Helfer | 4 | Daughter | — | Washington |
| 30 | Phyllis Adelaide Helfer | 2 | Daughter | — | Washington |
| 31 | Peter Conrad | 58 | Head | Farmer | Switzerland |
| 32 | Magdalena Conrad | 51 | Wife-H | — | Washington |
| 33 | Joseph P. Conrad | 23 | Son | Salesman | Washington |
| 34 | Grace L. Conrad | 18 | Daughter | — | Washington |
| 35 | Mary M. Conrad THIS PERSON | 15 | Daughter | — | Washington |
| 36 | Bessie L. Conrad | 13 | Daughter | — | Washington |
| 37 | Anna E. Conrad | 10 | Daughter | — | Washington |
| 38 | Harry F. Conrad | 8 | Son | — | Washington |
| 39 | Frank Caswell | 64 | Head | Farmer | Oregon |
| 40 | Mertie E. Caswell | 48 | Wife-H | — | Oregon |
| 41 | James H. Anspauch | 63 | Head | Farmer | Missouri |
| 42 | Sarah E. Anspauch | 60 | Wife-H | — | Illinois |
| 43 | Leroy A. Anspauch | 37 | Son | Laborer | Oregon |
| 44 | Ida J. Anspauch | 29 | Son | Fireman | Washington |
| 45 | August A. Hammer | 47 | Head | Farmer | Washington |
| 46 | Lillian M. Hammer | 43 | Wife-H | — | Missouri |
| 47 | Melvin A. Hammer | 10 | Son | — | Oregon |
| 48 | Frank P. Miller | 54 | Head | Farmer | Kansas |
| 49 | Sarah C. Miller | 38 | Wife-H | — | Iowa |
| 50 | — | None | — | — | — |
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)