MC
Mary Conrad — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Lassen-County, California
Our Model Tree links this Mary Conrad across the 1930 and 1940 US Censuses in Lassen-County, California (XGBoost, ~Confirmed) — first a daughter (b.~1927), then head of a 8-person household.
Age 13
b. ~1927
Female
Daughter
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Lassen-County, California |
| Surname | Conrad |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Millwood Farms |
| 1935 Residence (County) | Lassen |
| Additional Details | |
| Highest Grade | 7 |
| 1935 Residence | Same place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Township / Ward | Millwood Farms |
| Est. Birth Year | ~1927 |
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 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| David Conrad | Son | — | 11 | ~1929 |
| Robert Conrad | Son | — | 1 | ~1939 |
| William Conrad | Son | — | 16 | ~1924 |
| Bert Conrad | Head | — | 54 | ~1886 |
| Cecil Conrad | Son | — | 9 | ~1931 |
| Beulah Conrad | Spouse | — | 34 | ~1906 |
| Mary Conrad | Daughter | — | 13 | ~1927 |
| Ellen Conrad | Daughter | — | 7 | ~1933 |
Census Appearances
1930
Lassen, California
Daughter, age 2
Lassen, California · implied b. ~1928 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Conrad |
| Given Name | Mary Ann |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | Missouri |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
Lassen-County, California
Daughter, age 13
Lassen-County, California · implied b. ~1927 — 8 household members
| Surname | Conrad |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Millwood Farms |
| 1935 Residence (County) | Lassen |
| Highest Grade | 7 |
| 1935 Residence | Same place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
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 (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Conrad
Daughter · 1940 · age 13 · b. ~1927 · California
★ You are viewing this record
Sibling
Ellen Conrad
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Conrad
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Cecil Conrad
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Conrad
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
David Conrad
Sibling · 1940 · 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
1940 US Federal Census — Lassen-County, California
Open full size
1940 US Federal Census — Lassen-County, California
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00218-00384)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Gertrude Kurtzweil | 17 | daughter | — | Canada English |
| 42 | Violet Kurtzweil | 15 | daughter | — | California |
| 43 | Willis Brockman | 70 | head | — | California |
| 44 | Minnie A. Brockman | 61 | wife | — | Iowa |
| 45 | Ernest Brockman | 36 | son | Farmer | California |
| 46 | James Ramsay | 23 | head | Station Manager | California |
| 47 | William Ramsay | 22 | grandson | Truck Driver | California |
| 48 | Wilbur Ramsay | 19 | grandson | Attendant | California |
| 49 | Howard Freedy | 26 | head | Lumber Loader | Illinois |
| 50 | Helen Freedy | 24 | wife | Bookkeeping Machine Operator | California |
| 51 | Mary Freedy | 2 | daughter | — | California |
| 52 | Brad Way | 58 | head | — | California |
| 53 | Carmel Way | 41 | wife | — | California |
| 54 | Robert Smith | 50 | head | Carpenter | California |
| 55 | Estella Smith | 47 | wife | — | Washington |
| 56 | Lois Smith | 22 | daughter | Account Clerk | Washington |
| 57 | George Smith | 20 | son | Laborer | Washington |
| 58 | Joyce Smith | 8 | daughter | — | California |
| 59 | Fred Cramer | 69 | head | — | Wisconsin |
| 60 | Julie Cramer | 64 | wife | — | Colorado |
| 61 | Carl Lewis | 19 | grandson | Pin Setter | California |
| 62 | Virgil Lewis | 18 | grandson | — | California |
| 63 | Mary Lewis | 16 | granddaughter | — | California |
| 64 | Russel Stickley | 26 | head | Laborer | Ohio |
| 65 | Margaret Stickley | 29 | wife | — | North Dakota |
| 66 | William Stickley | 11 | son | — | California |
| 67 | Theresa Stickley | 8 | daughter | — | California |
| 68 | Russel Stickley | 2 | son | — | California |
| 69 | Robert Stickley | 1 | son | — | California |
| 70 | Joseph Nessin | 25 | lodger | Junior Clerk | Minnesota |
| 71 | Anton Hoffman | 56 | head | Laborer | Hungary |
| 72 | Lila Hoffman | 56 | wife | — | California |
| 73 | Bert Conrad | 54 | head | Laborer | California |
| 74 | Beulah Conrad | 34 | wife | — | Missouri |
| 75 | William Conrad | 16 | son | — | California |
| 76 | Mary Conrad THIS PERSON | 13 | daughter | — | California |
| 77 | David Conrad | 11 | son | — | California |
| 78 | Cecil Conrad | 9 | son | — | California |
| 79 | Ellen Conrad | 7 | daughter | — | California |
| 80 | Robert Conrad | 1 | son | — | California |
Related Census Records
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 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)