WM
William Mahoney — 1940 US Census Record
Model Tree available1940 United States Federal Census · Bay-County, Michigan
Our Model Tree links this William Mahoney across the 1920, 1930 and 1940 US Censuses in Bay-County, Michigan (XGBoost, ~Confirmed), with identified parents John & Mary — first a son (b.~1916), then head of a 9-person household.
Age 24
b. ~1916
Male
Son
Born: Michigan
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Bay-County, Michigan |
| Surname | Mahoney |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Bay City |
| 1935 Residence (County) | Bay |
| Additional Details | |
| Occupation | Clerk |
| Industry | Retail |
| Class of Worker | PW |
| Income (1939) | 220 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Occupation | Clerk |
| Township / Ward | Bay City |
| Est. Birth Year | ~1916 |
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 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Paul Mahoney | Son | — | 20 | ~1920 |
| William Mahoney | Son | — | 24 | ~1916 |
| Mary Mahoney | Spouse | — | 48 | ~1892 |
| Lawrence Mahoney | Other | — | 35 | ~1905 |
| Bernard Mahoney | Son | — | 21 | ~1919 |
| Nancy Mahoney | Daughter | — | 16 | ~1924 |
| Maureen Mahoney | Daughter | — | 25 | ~1915 |
| John Mahoney | Head | — | 52 | ~1888 |
| John Mahoney | Son | — | 26 | ~1914 |
Census Appearances
1920
Bay, Michigan
Son, age 3
Bay, Michigan · implied b. ~1917 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mahoney |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1930
Bay, Michigan
Son, age 14
Bay, Michigan · implied b. ~1916 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mahoney |
| Given Name | William J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Can Read/Write | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Bay-County, Michigan
Son, age 24
Bay-County, Michigan · implied b. ~1916 — 9 household members
| Surname | Mahoney |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Bay City |
| 1935 Residence (County) | Bay |
| Occupation | Clerk |
| Industry | Retail |
| Class of Worker | PW |
| Income (1939) | 220 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| 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 Mahoney across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Mahoney (~0.92 confidence) and mother Mary Mahoney (~0.92 confidence) and mother Mary Mahoney (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Mahoney
b. ~1889
Source father
● Household
· direct · ~0.92
Mother
Mary Mahoney
b. ~1891
Source mother
● Household
· direct · ~0.92
Mother
Mary Mahoney
b. ~1892
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Mahoney
Son · 1940 · age 24 · b. ~1916 · Michigan
★ You are viewing this record
Sibling
Bernard Mahoney
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Maureen Mahoney
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Nancy Mahoney
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Mahoney
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paul Mahoney
Sibling · 1940 · age 20
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 — Bay-County, Michigan
Open full size
1940 US Federal Census — Bay-County, Michigan
Page Contents
38 people indexed on this census page (nara:1940:m-t0627-01727-00286)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Peter Lehegaty | 29 | Head | Inspector | New York |
| 42 | Keilla Lehegaty | 21 | Wife | — | Michigan |
| 43 | Sandra Kay Lehegaty | 1 | Daughter | — | Michigan |
| 44 | Charles Crooks | 38 | Head | Salesman | Michigan |
| 45 | Viola Crooks | 38 | Wife | — | Michigan |
| 46 | Dorothy Crooks | 15 | Daughter | — | Michigan |
| 47 | Charles Crooks | 12 | Son | — | Michigan |
| 48 | Joan Crooks | 11 | Daughter | — | Michigan |
| 49 | Mary Mccombs | 65 | Head | — | Michigan |
| 50 | Peter Holmsted | 35 | Head | Surgeon | Massachusetts |
| 51 | Phyllis Holmsted | 31 | Wife | — | Michigan |
| 52 | Carol Holmsted | 0 | Daughter | — | Michigan |
| 53 | Gertrude Bates | 67 | Head | — | Michigan |
| 54 | Clement Larkin | 83 | Head | — | Indiana |
| 55 | Anna Larkin | 69 | Wife | — | Michigan |
| 56 | Rudolph Soutter | 43 | Head | Decorator | Michigan |
| 57 | Velma Soutter | 37 | Wife | — | Michigan |
| 58 | Betty Soutter | 13 | Daughter | — | Michigan |
| 59 | Donald Soutter | 11 | Son | — | Michigan |
| 60 | Richard Soutter | 9 | Son | — | Michigan |
| 61 | Mary Soutter | 68 | Mother | — | Germany |
| 62 | Mary Lytheart | 66 | Head | — | Michigan |
| 63 | Lambert Emil Lytheart | 32 | Son | Mechanic | Michigan |
| 64 | Clara Lytheart | 33 | Daughter-in-law | — | Michigan |
| 65 | Louis Lytheart | 3 | Son | — | Michigan |
| 66 | Max Hitthener | 72 | Head | — | Germany |
| 67 | Nellie Hitthener | 65 | Wife | — | Michigan |
| 68 | John Mahoney | 52 | Head | Switchman | Michigan |
| 69 | Mary Mahoney | 48 | Wife | — | Michigan |
| 70 | John Mahoney | 26 | Son | Clerk | Michigan |
| 71 | Maureen Mahoney | 25 | Daughter | Clerk | Michigan |
| 72 | William Mahoney THIS PERSON | 24 | Son | Clerk | Michigan |
| 73 | Bernard Mahoney | 21 | Son | Clerk | Michigan |
| 74 | Paul Mahoney | 20 | Son | Cook | Michigan |
| 75 | Nancy Mahoney | 16 | Daughter | — | Michigan |
| 76 | Lawrence Mahoney | 35 | Brother | Operator | Michigan |
| 77 | Arthur Runner | 53 | Head | Teacher | Michigan |
| 78 | Viola Runner | 48 | Wife | — | Michigan |
Related Census Records
Pedigree Summary
William + 5 siblings
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
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)