MC
Mary Cowan — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Rock, Wisconsin
Our Model Tree links this Mary Cowan across the 1930 and 1940 US Censuses in Rock, Wisconsin (XGBoost, ~Confirmed) — first a daughter (b.~1925), then head of a 9-person household.
Age 5
b. ~1925
Female
Daughter
Born: Wisconsin
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Rock, Wisconsin |
| Surname | Cowan |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Mississippi |
| Additional Details | |
| Occupation | none |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
| Township / Ward | Beloit City |
| Est. Birth Year | ~1925 |
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.
9 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mildred Cowan | Daughter | — | 1 | ~1929 |
| Mary Cowan | Daughter | — | 5 | ~1925 |
| Annie Cowan | Daughter | — | 3 | ~1927 |
| Mary Cowan | Other | — | 40 | ~1890 |
| Clouston Cowan | Son | — | 15 | ~1915 |
| Eleanor Cowan | Daughter | — | 10 | ~1920 |
| Lucius Cowan | Son | — | 13 | ~1917 |
| Lawson Cowan | Head | — | 40 | ~1890 |
| William Cowan | Son | — | 7 | ~1923 |
Census Appearances
1930
Rock, Wisconsin
Daughter, age 5
Rock, Wisconsin · implied b. ~1925 — 9 household members
| Surname | Cowan |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Mississippi |
| Occupation | none |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1940
Rock-County, Wisconsin
Other, age 18
Rock-County, Wisconsin · implied b. ~1922 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cowan |
| Given Name | Marjorie |
| Relationship to Head | Grand Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| 1935 Residence (City) | Plymouth town |
| 1935 Residence (County) | Rock |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
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 Cowan across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Cowan
Daughter · 1930 · age 5 · b. ~1925 · Wisconsin
★ You are viewing this record
Sibling
Annie Cowan
Sibling · 1930 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Clouston Cowan
Sibling · 1930 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Cowan
Sibling · 1930 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lucius Cowan
Sibling · 1930 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eleanor Cowan
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mildred Cowan
Sibling · 1930 · age 1
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 — Rock, Wisconsin
Open full size
1930 US Federal Census — Rock, Wisconsin
Page Contents
50 people indexed on this census page (ia:1930:15thcensus2609unit:0666)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | George Pankratoglow | 52 | Head | Shoemaker | Greece |
| 52 | Anthe Pankratoglow | 50 | Wife-H | None | Greece |
| 53 | Stella Pankratoglow | 17 | Daughter | None | Greece |
| 54 | Stamatios Pankratoglow | 7 | Son | None | Greece |
| 55 | Antonios Mavrogiorgos | 50 | Roomer | Laborer | Greece |
| 56 | Lawson Cowan | 40 | Head | Laborer | Alabama |
| 57 | Mary Cowan | 40 | Wife-H | Worker | Mississippi |
| 58 | Clouston Cowan | 15 | Son | None | Mississippi |
| 59 | Lucius Cowan | 13 | Son | None | Mississippi |
| 60 | Eleanor Cowan | 10 | Daughter | None | Wisconsin |
| 61 | William Cowan | 7 | Son | None | Wisconsin |
| 62 | Mary Cowan THIS PERSON | 5 | Daughter | None | Wisconsin |
| 63 | Annie Cowan | 3 | Daughter | None | Wisconsin |
| 64 | Mildred Cowan | 1 | Daughter | None | Wisconsin |
| 65 | Charles A. Scalia | 40 | Head | Moulder | Italy |
| 66 | Jennie Scalia | 37 | Wife-H | None | Italy |
| 67 | Bessie Scalia | 18 | Daughter | None | Wisconsin |
| 68 | Peter Scalia | 16 | Son | None | Wisconsin |
| 69 | Gaspar Scalia | 15 | Son | None | Wisconsin |
| 70 | Isabelle Scalia | 12 | Daughter | None | Wisconsin |
| 71 | Joseph Scalia | 9 | Son | None | Wisconsin |
| 72 | Mary Scalia | 6 | Daughter | None | Wisconsin |
| 73 | John Schultz | 73 | Head | Machinist | Germany |
| 74 | Mary B. Schultz | 65 | Wife-H | None | Germany |
| 75 | George Christoulakis | 38 | Roomer | Laborer | Greece |
| 76 | Christian Jorgenson | 58 | Roomer | Machinist | Norway |
| 77 | Frederick A. Koehn | 61 | Roomer | Machinist | Germany |
| 78 | James Kalsares | 39 | Roomer | Chipper | Greece |
| 79 | Ethel J. Kelley | 38 | Head | Manager | Wisconsin |
| 80 | Mary E. Kelley | 9 | Daughter | None | Wisconsin |
| 81 | Hazel G. Kelley | 6 | Daughter | None | Wisconsin |
| 82 | John P. Dean | 60 | Head | Teacher | New York |
| 83 | Daniel C. Frost | 25 | Lodger | Teacher | Massachusetts |
| 84 | (Mrs. D. C.) Frost | 32 | Guest | None | Pennsylvania |
| 85 | Alva Curtis | 77 | Head | None | Mississippi |
| 86 | Eugene S. Curtis | 56 | Son | Laborer | Illinois |
| 87 | William Q. Bennett | 36 | Head | Furnace Man | No Dakota |
| 88 | Flora M. Bennett | 21 | Wife-H | None | Wisconsin |
| 89 | Nels E. Anderson | 65 | Head | Asst-Engineer | Norway |
| 90 | Ines E. Anderson | 48 | Wife-H | Asst-Cook | Michigan |
| 91 | Hazel E. Anderson | 21 | Daughter | Stenographer | Michigan |
| 92 | Catherine G. Evans | 21 | Rusher | Student | Colorado |
| 93 | Edna N. Nelson | 48 | Head | Directress | Michigan |
| 94 | Amy E. Fredrickson | 20 | Roomer | Chief Cook | Michigan |
| 95 | Kate M. Bossingham | 60 | Roomer | Dining Room | Wisconsin |
| 96 | James Kostopulos | 45 | Head | Laborer | Greece |
| 97 | Harriet Kostopulos | 42 | Wife-H | None | Greece |
| 98 | Stella Kostopulos | 12 | Daughter | None | Wisconsin |
| 99 | George J. Kostopulos | 9 | Son | None | Wisconsin |
| 100 | Athanasios Kostopulos | 3 | Son | None | Wisconsin |
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)