MC
Mary Crosby — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Oakland, Michigan
Our Model Tree links this Mary Crosby across the 1920 and 1930 US Censuses in Oakland, Michigan (XGBoost, ~Confirmed) — first a daughter (b.~1918), then head of a 13-person household.
Age 12
b. ~1918
Female
Daughter
Born: Michigan
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Oakland, Michigan |
| Surname | Crosby |
| Given Name | Mary J |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Additional Details | |
| Occupation | Stock Man |
| Industry | Rubber Plant |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Occupation | Stock Man |
| Township / Ward | Pontiac City |
| 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.
13 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Alice Crosby | Daughter | — | 2 | ~1928 |
| Alice Crosby | Spouse | — | 32 | ~1898 |
| Lillian Crosby | Daughter | — | 7 | ~1923 |
| Lillian Crosby | Daughter | — | 6 | ~1924 |
| Alice Crosby | Spouse | — | 35 | ~1895 |
| Alice Crosby | Daughter | — | 8 | ~1922 |
| William Crosby | Son | — | 4 | ~1926 |
| William Crosby | Son | — | 36 | ~1894 |
| Alice Crosby | Daughter | — | 10 | ~1920 |
| Mary Crosby | Daughter | — | 10 | ~1920 |
| William Crosby | Head | — | 35 | ~1895 |
| Mary Crosby | Daughter | — | 12 | ~1918 |
| Lillian Crosby | Daughter | — | 1 | ~1929 |
Census Appearances
1920
Oakland, Michigan
Daughter, age 2
Oakland, Michigan · implied b. ~1918 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Crosby |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1930
Oakland, Michigan
Daughter, age 12
Oakland, Michigan · implied b. ~1918 — 13 household members
| Surname | Crosby |
| Given Name | Mary J |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Occupation | Stock Man |
| Industry | Rubber Plant |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
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 Crosby across 2 US Census years (1920 and 1930) in Oakland, Michigan, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Crosby
Daughter · 1930 · age 12 · b. ~1918 · Michigan
★ You are viewing this record
Sibling
Alice Crosby
Sibling · 1930 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Crosby
Sibling · 1930 · age 36
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Crosby
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Crosby
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lillian Crosby
Sibling · 1930 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lillian Crosby
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Crosby
Sibling · 1930 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Crosby
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lillian Crosby
Sibling · 1930 · age 7
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 — Oakland, Michigan
Open full size
1930 US Federal Census — Oakland, Michigan
Page Contents
50 people indexed on this census page (ia:1930:michigancensus00reel1018:0267)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Harry E King | 37 | Head | Retail Lumber | Wisconsin |
| 52 | Lillian King | 33 | Wife | — | Michigan |
| 53 | Harry Jr King | 7 | Son | — | Michigan |
| 54 | Robert King | 5 | Son | — | Michigan |
| 55 | Amos F Mitchell | 27 | O | Clerk | Michigan |
| 56 | Lula R Mitchell | 24 | Wife | — | Michigan |
| 57 | Betty Mitchell | 4 | — | — | Michigan |
| 58 | Barbara Mitchell | 1 | — | — | Michigan |
| 59 | Theresa Alloway | 30 | Roomer | Beauty Operator | Michigan |
| 60 | Noah Miller | 59 | O | Painter | Canada-Eng |
| 61 | Sarah Miller | 66 | Wife | — | New York |
| 62 | John Schroeder | 38 | O | Salesman | Michigan |
| 63 | Lillian Schroeder | 31 | Wife | — | Michigan |
| 64 | John Jr Schroeder | 3 | Son | — | Michigan |
| 65 | Robert Schroeder | 1 | Son | — | Michigan |
| 66 | William Schroeder | 1 | Son | — | Michigan |
| 67 | Richard Schroeder | 1 | Son | — | Michigan |
| 68 | Amos Crosby | 21 | O | Truck Driver | Michigan |
| 69 | Lillian Crosby | 21 | Wife | — | Michigan |
| 70 | Amos Jr Crosby | 1 | Son | — | Michigan |
| 71 | Lillian Crosby | 0 | Daughter | — | Michigan |
| 72 | William Crosby | 0 | Son | — | Michigan |
| 73 | William Crosby | 72 | Father | Retired | England |
| 74 | Mary Crosby | 67 | Mother | — | Germany |
| 75 | William Crosby | 32 | Brother | Salesman | Michigan |
| 76 | George Crosby | 28 | Brother | — | Kentucky |
| 77 | James Crosby | 21 | Brother | Trucker | Tennessee |
| 78 | John Crosby | 17 | Brother | — | Tennessee |
| 79 | Robert Crosby | 15 | Brother | — | Tennessee |
| 80 | William Crosby | 17 | O | Body Builder | Michigan |
| 81 | Alice Crosby | 21 | Wife | — | Michigan |
| 82 | Mary J Crosby | 5 | Daughter | — | Michigan |
| 83 | Alice Crosby | 3 | Daughter | — | Michigan |
| 84 | Lillian Crosby | 2 | Daughter | — | Michigan |
| 85 | William Crosby | 0 | Son | — | Michigan |
| 86 | William Crosby | 35 | Head | — | Michigan |
| 87 | Alice Crosby | 35 | Wife | Tool Maker | Michigan |
| 88 | Mary J Crosby THIS PERSON | 12 | Daughter | Stock Man | Michigan |
| 89 | Alice Crosby | 10 | Daughter | — | Michigan |
| 90 | Lillian Crosby | 7 | Daughter | — | Michigan |
| 91 | William Crosby | 36 | Son | Maintenance | Indiana |
| 92 | Alice Crosby | 32 | Wife | — | Missouri |
| 93 | Mary J Crosby | 10 | Daughter | — | Indiana |
| 94 | Alice Crosby | 8 | Daughter | — | Indiana |
| 95 | Lillian Crosby | 6 | Daughter | — | Indiana |
| 96 | William Crosby | 4 | Son | — | Indiana |
| 97 | Alice Crosby | 2 | Daughter | — | Indiana |
| 98 | Lillian Crosby | 1 | Daughter | — | Indiana |
| 99 | William Crosby | 35 | Head | Polisher | Michigan |
| 100 | Alice Crosby | 39 | Wife | Architectural | Michigan |
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)