WM
William Mcgrath — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Oakland-County, Michigan
Our Model Tree links this William Mcgrath across the 1930 and 1940 US Censuses in Oakland-County, Michigan (XGBoost, ~Confirmed) — first a son (b.~1927), then head of a 11-person household.
Age 13
b. ~1927
Male
Son
Born: Michigan
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Oakland-County, Michigan |
| Surname | McGrath |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Oakland |
| 1935 Residence (County) | Oakland |
| Additional Details | |
| Highest Grade | No 7 |
| 1935 Residence | Michigan |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Township / Ward | Royal Oak City |
| 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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Charles Mcgrath | Son | — | 32 | ~1908 |
| Kathryn Mcgrath | Daughter | — | 4 | ~1936 |
| Thomas Mcgrath | Son | — | 18 | ~1922 |
| William Mcgrath | Son | — | 13 | ~1927 |
| Patricia Mcgrath | Daughter | — | 15 | ~1925 |
| Genevieve Mcgrath | Spouse | — | 49 | ~1891 |
| John Mcgrath | Head | — | 47 | ~1893 |
| Rita Mcgrath | Daughter | — | 22 | ~1918 |
| Robert Mcgrath | Son | — | 11 | ~1929 |
| John Mcgrath | Son | — | 21 | ~1919 |
| Jerome Mcgrath | Son | — | 9 | ~1931 |
Census Appearances
1930
Oakland, Michigan
Son, age 2
Oakland, Michigan · implied b. ~1928 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McGrath |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Michigan |
| Age at First Marriage | 2 |
| Father's Birthplace | Ireland North |
| Mother's Birthplace | Maine |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Oakland-County, Michigan
Son, age 13
Oakland-County, Michigan · implied b. ~1927 — 11 household members
| Surname | McGrath |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Oakland |
| 1935 Residence (County) | Oakland |
| Highest Grade | No 7 |
| 1935 Residence | Michigan |
| 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 William Mcgrath across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Mcgrath
Son · 1940 · age 13 · b. ~1927 · Michigan
★ You are viewing this record
Sibling
Charles Mcgrath
Sibling · 1940 · age 32
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Mcgrath
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patricia Mcgrath
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rita Mcgrath
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kathryn Mcgrath
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jerome Mcgrath
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Mcgrath
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Mcgrath
Sibling · 1940 · age 18
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 — Oakland-County, Michigan
Open full size
1940 US Federal Census — Oakland-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01802-00463)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Clarence Howard | 52 | Head | Metal Layout | Michigan |
| 2 | Nellie Howard | 50 | Wife | — | Ohio |
| 3 | John Mcgrath | 47 | Head | Owner | Pennsylvania |
| 4 | Genevieve Mcgrath | 49 | Wife | — | Pennsylvania |
| 5 | Rita Mcgrath | 22 | Daughter | Saleswoman | Pennsylvania |
| 6 | John Mcgrath | 21 | Son | Truck Driver | Pennsylvania |
| 7 | Thomas Mcgrath | 18 | Son | Yardman | Pennsylvania |
| 8 | Patricia Mcgrath | 15 | Daughter | — | Michigan |
| 9 | William Mcgrath THIS PERSON | 13 | Son | — | Michigan |
| 10 | Robert Mcgrath | 11 | Son | — | Michigan |
| 11 | Jerome Mcgrath | 9 | Son | — | Michigan |
| 12 | Kathryn Mcgrath | 4 | Daughter | — | Michigan |
| 13 | Charles Jackline Mcgrath | 32 | Son | — | Pennsylvania |
| 14 | Jacob R Grindem | 45 | Head | Manager | Norway |
| 15 | Anna S Grindem | 52 | Wife | — | Wisconsin |
| 16 | Albert Lewis | 56 | Lodger | Handy Man | Canada-Eng |
| 17 | Roe Wallin | 21 | Lodger | Delivery Man | Arkansas |
| 18 | Josiah C Jordan | 29 | Head | Tool & Die Maker | Pennsylvania |
| 19 | Laura Jordan | 26 | Wife | — | England |
| 20 | Joyce Jordan | 3 | Daughter | — | Michigan |
| 21 | Richard Jordan | 2 | Son | — | Michigan |
| 22 | Emory Hauger | 52 | Head | Compositor | Pennsylvania |
| 23 | Clara S Hauger | 49 | Wife | — | Pennsylvania |
| 24 | Charles Hauger | 21 | Son | Pin Boy | Pennsylvania |
| 25 | Francis G Hauger | 19 | Son | Stock Clerk | Michigan |
| 26 | William Hauger | 23 | Son | Carpenter | Pennsylvania |
| 27 | Jean Hauger | 19 | Daughter-in-law | — | Michigan |
| 28 | William Jr Hauger | 1 | Grandson | — | Michigan |
| 29 | Samuel R Wallace | 40 | Head | Forman | Tennessee |
| 30 | Hollis Wallace | 34 | Wife | — | Michigan |
| 31 | James S Wallace | 4 | Son | — | Michigan |
| 32 | Peggy Ann Wallace | 2 | Daughter | — | Michigan |
| 33 | Mary Lou Wallace | 1 | Daughter | — | Michigan |
| 34 | Bessie A Johnson | 70 | Mother-in-law | — | Canada-Eng |
| 35 | Edith Myers | 59 | Sister-in-law | — | Canada-Eng |
| 36 | Van Follenweider | 63 | Head | — | Michigan |
| 37 | Hortense Follenweider | 65 | Wife | — | Canada-Eng |
| 38 | Dale Furman | 32 | Head | Repair Man | Michigan |
| 39 | Alice Furman | 28 | Wife | — | Michigan |
| 40 | Dale Jr Furman | 4 | Son | — | 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)