ML
Mary Leach — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Wayne, Michigan
Our Model Tree links this Mary Leach across the 1920, 1930 and 1940 US Censuses in Wayne, Michigan (XGBoost, ~Confirmed) — first a spouse (b.~1894), then head of a 27-person household.
Age 36
b. ~1894
Female
Spouse
Born: Poland
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Wayne, Michigan |
| Surname | Leach |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Poland |
| Naturalization Status | Alien |
| Year of Immigration | 1912 |
| Age at First Marriage | 22 |
| Father's Birthplace | Poland |
| Mother's Birthplace | Poland |
| Additional Details | |
| Can Read/Write | Yes |
| Mother Tongue | Polish |
| Birth Country | Poland |
| Birthplace (normalized) | poland |
| Township / Ward | Detroit City |
| Est. Birth Year | ~1894 |
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.
27 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Anne Leach | Daughter | — | 1 | ~1929 |
| Simon Stein | Son | — | 9 | ~1921 |
| Bert Rudewicz | Other | — | 33 | ~1897 |
| Casmir Malinowski | Son | — | 13 | ~1917 |
| Mary Leach | Spouse | — | 36 | ~1894 |
| Frank Malinowski | Son | — | 12 | ~1918 |
| Jennie Leach | Daughter | — | 11 | ~1919 |
| Victoria Malinowski | Spouse | — | 39 | ~1891 |
| Marie Rudewicz | Spouse | — | 30 | ~1900 |
| Mary Amico | Spouse | — | 28 | ~1902 |
| Virginia Leach | Daughter | — | 5 | ~1925 |
| Teddy Malinowski | Son | — | 15 | ~1915 |
| Lillie Balser | Daughter | — | 19 | ~1911 |
| Wanda Leach | Daughter | — | 10 | ~1920 |
| Frank Malinowski | Other | — | 39 | ~1891 |
| Walton Leach | Head | — | 36 | ~1894 |
| Mary Balser | Other | — | 53 | ~1877 |
| Andrew Balser | Son | — | 16 | ~1914 |
| Stephen Balser | Son | — | 24 | ~1906 |
| Allen Stein | Son | — | 2 | ~1928 |
| George Hopp | Other | — | 45 | ~1885 |
| Victor Stein | Son | — | 5 | ~1925 |
| Ruth Stein | Daughter | — | ~1930 | |
| Nellie Stein | Spouse | — | 35 | ~1895 |
| Leo Stein | Other | — | 40 | ~1890 |
| Joseph Amico | Other | — | 33 | ~1897 |
| Edward Rudewicz | Son | — | 9 | ~1921 |
Census Appearances
1920
Wayne, Michigan
Spouse, age 24
Wayne, Michigan · implied b. ~1896 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lach |
| Given Name | Marya |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Married |
| Birthplace | Poland |
| Year of Immigration | 1900 |
| Naturalization Status | Alien |
| Father's Birthplace | Poland |
| Mother's Birthplace | Poland |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | No |
| Mother Tongue | Polish |
| Birth Country | Poland |
| Birthplace (normalized) | poland |
1930
Wayne, Michigan
Spouse, age 36
Wayne, Michigan · implied b. ~1894 — 27 household members
| Surname | Leach |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Poland |
| Naturalization Status | Alien |
| Year of Immigration | 1912 |
| Age at First Marriage | 22 |
| Father's Birthplace | Poland |
| Mother's Birthplace | Poland |
| Can Read/Write | Yes |
| Mother Tongue | Polish |
| Birth Country | Poland |
| Birthplace (normalized) | poland |
1940
Wayne-County, Michigan
Spouse, age 41
Wayne-County, Michigan · implied b. ~1899 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lach |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Poland |
| 1935 Residence (City) | Detroit City |
| 1935 Residence (County) | Wayne |
| Naturalization Status | Naturalized |
| Occupation | Sewing |
| Industry | Auto factory |
| Class of Worker | PW |
| Hours Worked | 30 |
| Income (1939) | 1060 |
| Highest Grade | S 8 |
| 1935 Residence | Same place |
| Birth Country | Poland |
| Birthplace (normalized) | poland |
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 Leach across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Leach
Spouse · 1930 · age 36 · b. ~1894 · Michigan
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Wayne, Michigan
Open full size
1930 US Federal Census — Wayne, Michigan
Page Contents
49 people indexed on this census page (ia:1930:michigancensus00reel1061:0782)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Joseph F. Macek | 27 | Head | Coil Winder | Poland |
| 52 | Catherine M. Macek | 22 | Wife | — | Illinois |
| 53 | Lorraine M. Macek | 2 | Daughter | — | Michigan |
| 54 | Eugene Macek | 0 | Son | — | Michigan |
| 55 | Vincent Kaczorowski | 67 | Head | Laborer | Poland |
| 56 | Lucy Kaczorowski | 53 | Wife | — | Poland |
| 57 | Joseph Kaczorowski | 20 | Son | — | Michigan |
| 58 | Edward Stabary | 26 | Head | Pattern Maker | Michigan |
| 59 | Blanche Stabary | 20 | Wife | — | Michigan |
| 60 | Max Licht | 43 | R | Mgr. Retail Produce | Poland |
| 61 | Gussie Licht | 35 | Wife | Saleslady | Poland |
| 62 | Philip Licht | 5 | Son | — | Michigan |
| 63 | Robert Licht | 3 | Son | — | New York |
| 64 | Charles Amatone | 21 | R | Welder | Ohio |
| 65 | Katie Amatone | 18 | Wife | — | Ohio |
| 66 | Ignace Czapski | 43 | Head | Laborer | Poland |
| 67 | Priscilla Czapski | 42 | Wife | — | Poland |
| 68 | Ignace Jr. Czapski | 19 | Son | Barber | Michigan |
| 69 | Blanche Czapski | 17 | Daughter | — | Michigan |
| 70 | Sidney Czapski | 15 | Daughter | — | Michigan |
| 71 | Florida Czapski | 13 | Daughter | — | Michigan |
| 72 | August Tuchini | 43 | R | Carpenter | Roumania |
| 73 | Walton Leach | 36 | Head | Agent | Poland |
| 74 | Mary Leach THIS PERSON | 36 | Wife | — | Poland |
| 75 | Jennie Leach | 11 | Daughter | — | Michigan |
| 76 | Wanda Leach | 10 | Daughter | — | Michigan |
| 77 | Virginia B. Leach | 5 | Daughter | — | Michigan |
| 78 | Anne M. Leach | 1 | Daughter | — | Michigan |
| 79 | Frank Sr. Malinowski | 39 | O | Retail Merchant | Poland |
| 80 | Victoria Malinowski | 39 | Wife | — | Poland |
| 81 | Teddy Malinowski | 15 | Son | — | Michigan |
| 82 | Casmir Malinowski | 13 | Son | — | Michigan |
| 83 | Frank Jr. Malinowski | 12 | Son | — | Michigan |
| 84 | George Hopp | 45 | Lodger | Trimmer | Poland |
| 85 | Mary R. Balser | 53 | R | — | Poland |
| 86 | Stephen R. Balser | 24 | Son | Assembler | Pennsylvania |
| 87 | Andrew Balser | 16 | Son | — | Pennsylvania |
| 88 | Lillie E. Balser | 19 | Daughter | — | Pennsylvania |
| 89 | Bert Rudewicz | 33 | R | Foreman | Poland |
| 90 | Marie Rudewicz | 30 | Wife | — | Poland |
| 91 | Edward Rudewicz | 9 | Son | — | Michigan |
| 92 | Leo Stein | 40 | O | Retail Merchant | Poland |
| 93 | Nellie Stein | 35 | Wife | — | Roumania |
| 94 | Simon S. Stein | 9 | Son | — | Michigan |
| 95 | Victor S. Stein | 5 | Son | — | Michigan |
| 96 | Allen S. Stein | 2 | Son | — | Michigan |
| 97 | Ruth E. Stein | 0 | Daughter | — | Michigan |
| 98 | Joseph Amico | 33 | R | Operator | Italy |
| 99 | Mary Amico | 28 | Wife | — | Italy |
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)