MG
Mary Grady — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Kent-County, Michigan
Our Model Tree links this Mary Grady across the 1930 and 1940 US Censuses in Kent-County, Michigan (XGBoost, ~Confirmed) — first a daughter (b.~1925), then head of a 8-person household.
Age 15
b. ~1925
Female
Daughter
Born: Michigan
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Kent-County, Michigan |
| Surname | Grady |
| Given Name | Mary Alice |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Grand Rapids |
| 1935 Residence (County) | Kent |
| Additional Details | |
| Industry | 0 |
| Highest Grade | 7 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Township / Ward | Grand Rapids |
| 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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Jean Grady | Daughter | — | 22 | ~1918 |
| Mary Grady | Daughter | — | 15 | ~1925 |
| Thomas Grady | Son | — | 13 | ~1927 |
| Wayne Grady | Son | — | 17 | ~1923 |
| Barbara Grady | Daughter | — | 9 | ~1931 |
| George Grady | Head | — | 48 | ~1892 |
| Bryan Grady | Son | — | 7 | ~1933 |
| Irene Grady | Spouse | — | 42 | ~1898 |
Census Appearances
1930
Kent, Michigan
Daughter, age 5
Kent, Michigan · implied b. ~1925 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Grady |
| Given Name | Maryalice |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Kent-County, Michigan
Daughter, age 15
Kent-County, Michigan · implied b. ~1925 — 8 household members
| Surname | Grady |
| Given Name | Mary Alice |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Grand Rapids |
| 1935 Residence (County) | Kent |
| Industry | 0 |
| Highest Grade | 7 |
| 1935 Residence | Same place |
| 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 Grady across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Grady
Daughter · 1940 · age 15 · b. ~1925 · Michigan
★ You are viewing this record
Sibling
Wayne Grady
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Barbara Grady
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Grady
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jean Grady
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bryan Grady
Sibling · 1940 · 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
1940 US Federal Census — Kent-County, Michigan
Open full size
1940 US Federal Census — Kent-County, Michigan
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01901-00202)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Mrs. Ida Stark | 67 | Head | — | Michigan |
| 42 | Marguerite Rouse | 24 | Lodger | Inspector | Michigan |
| 43 | Mark H. Padley | 47 | Head | Doorman | Michigan |
| 44 | Iratin Padley | 57 | Wife | — | Michigan |
| 45 | Ruth Louise Padley | 16 | Daughter | — | Michigan |
| 47 | George Grady | 48 | Head | Fireman | Michigan |
| 48 | Irene Grady | 42 | Wife | — | Michigan |
| 49 | Jean Grady | 22 | Daughter | Inspector | Michigan |
| 50 | Wayne Grady | 17 | Son | — | Michigan |
| 51 | Mary Alice Grady THIS PERSON | 15 | Daughter | — | Michigan |
| 52 | Thomas Grady | 13 | Son | — | Michigan |
| 53 | Barbara Ann Grady | 9 | Daughter | — | Michigan |
| 54 | Bryan Grady | 7 | Son | — | Michigan |
| 55 | Lyle Lee Keeney | 46 | Head | Car Inspector | Michigan |
| 56 | Thomas B. Keely | 36 | Head | Bartender | Illinois |
| 57 | Ervin Wait | 36 | Head | Laborer | Michigan |
| 58 | Marguerite Wait | 32 | Wife | — | Michigan |
| 59 | Lewis A. Bradley | 36 | Head | Fireman | Iowa |
| 60 | Josephine Bradley | 36 | Wife | Beauty Operator | Oklahoma |
| 61 | James Bradley | 13 | Son | — | Illinois |
| 62 | Bunnice Ashley | 43 | Head | — | Michigan |
| 63 | Connie J. Ashley | 10 | Daughter | — | Michigan |
| 64 | Emma Ashley | 73 | Mother | — | Michigan |
| 65 | David Germain | 60 | Head | Proprietor | Russia |
| 66 | Lillian Germain | 54 | Wife | — | Russia |
| 67 | Melvin Germain | 30 | Son | Proprietor | New York |
| 68 | Joseph H. Lord | 64 | Head | — | Michigan |
| 69 | Gladys Lord | 56 | Wife | — | Michigan |
| 70 | Kenneth Lord | 30 | Son | — | Michigan |
| 71 | Jean T. Lord | 20 | Daughter | Press Feeder | Michigan |
| 72 | Albert Roerig | 37 | Son-in-law | Plasterer | Netherlands |
| 73 | Hannah Roerig | 34 | Daughter | — | Michigan |
| 74 | Lyle C. Burley | 48 | Head | — | Michigan |
| 75 | Lucille Burley | 32 | Wife | — | Michigan |
| 76 | Howard Burley | 15 | Son | — | Michigan |
| 77 | June Burley | 12 | Daughter | — | Michigan |
| 78 | Harold Burley | 10 | Son | — | Michigan |
| 79 | Arnold Burley | 8 | Son | — | Michigan |
| 80 | Ethel Burley | 5 | Daughter | — | Michigan |
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)