JL
John Leahy — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Multnomah-County, Oregon
Our Model Tree links this John Leahy across the 1920, 1930 and 1940 US Censuses in Multnomah-County, Oregon (XGBoost, ~Confirmed) — first a head (b.~1886), then head of a 6-person household.
Age 54
b. ~1886
Male
Head
Born: Oregon
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Multnomah-County, Oregon |
| Surname | Leahy |
| Given Name | John James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | Oregon |
| 1935 Residence (City) | Portland (City) |
| 1935 Residence (County) | Multnomah |
| Additional Details | |
| Occupation | Machinist |
| Industry | Iron Works |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1488 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| Birth State | Oregon |
| Birth Country | United States |
| Birthplace (normalized) | oregon |
| Occupation | Machinist |
| Township / Ward | Portland City |
| Est. Birth Year | ~1886 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Dorothy Leahy | Spouse | — | 43 | ~1897 |
| Dorothy Leahy | Daughter | — | 18 | ~1922 |
| James Leahy | Son | — | 13 | ~1927 |
| Frederick Ward | Other | — | 45 | ~1895 |
| John Leahy | Head | — | 54 | ~1886 |
| John Leahy | Son | — | 21 | ~1919 |
Census Appearances
1920
Multnomah, Oregon
Head, age 34
Multnomah, Oregon · implied b. ~1886 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Leahy |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Oregon |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Machinist |
| Industry | Ship Yard |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Oregon |
| Birth Country | United States |
| Birthplace (normalized) | oregon |
1930
Multnomah, Oregon
Head, age 44
Multnomah, Oregon · implied b. ~1886 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Leahy |
| Given Name | John J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Oregon |
| Age at First Marriage | 21 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Machinist |
| Industry | Machine Shop |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 1000 |
| Radio Set | R |
| Veteran | Yes |
| Birth State | Oregon |
| Birth Country | United States |
| Birthplace (normalized) | oregon |
1940
Multnomah-County, Oregon
Head, age 54
Multnomah-County, Oregon · implied b. ~1886 — 6 household members
| Surname | Leahy |
| Given Name | John James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | Oregon |
| 1935 Residence (City) | Portland (City) |
| 1935 Residence (County) | Multnomah |
| Occupation | Machinist |
| Industry | Iron Works |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1488 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| Birth State | Oregon |
| Birth Country | United States |
| Birthplace (normalized) | oregon |
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 John Leahy across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Leahy
Head · 1940 · age 54 · b. ~1886 · Oregon
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Multnomah-County, Oregon
Open full size
1940 US Federal Census — Multnomah-County, Oregon
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-03388-00726)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Leonard S Mcvey | 27 | Head | Automobile Testing Station | Oregon |
| 42 | Ruth E Mcvey | 23 | Wife | Housewife | Oregon |
| 43 | Sandra E Mcvey | 2 | Daughter | — | Oregon |
| 44 | Gary S Mcvey | 1 | Son | — | Oregon |
| 45 | Osie L Sterns | 42 | Mother-in-law | Cleaner | Washington |
| 46 | John B Fournat | 30 | Head | Truck Driver | Oregon |
| 47 | Alma M Fournat | 27 | Wife | Housewife | Washington |
| 48 | Ronald L Fournat | 7 | Son | — | Oregon |
| 49 | Roger B Fournat | 5 | Son | — | Oregon |
| 50 | Alfloyd M Harris | 35 | Head | Logger | Oregon |
| 51 | Irene B Harris | 38 | Wife | Housewife | Nebraska |
| 52 | Dale L Harris | 11 | Son | — | Oregon |
| 53 | Donna A Harris | 9 | Daughter | — | Oregon |
| 54 | Lafayette C Collins | 67 | Head | Painter And Paper Hanger | Tennessee |
| 55 | Minnie M Collins | 59 | Wife | Housewife | Mississippi |
| 56 | Eli M Marthala | 31 | Head | Painter And Paper Hanger | Canada-English |
| 57 | Norma M Marthala | 24 | Wife | Housewife | Idaho |
| 58 | Lelia Lou Marthala | 3 | Daughter | — | Oregon |
| 59 | John A Taylor | 56 | Head | Painter And Paper Hanger | Arkansas |
| 60 | Irene R Taylor | 38 | Wife | Housewife | Colorado |
| 61 | June G Taylor | 18 | Daughter | Clerical | Washington |
| 62 | Irene R Taylor | 16 | Daughter | — | Oregon |
| 63 | John A Taylor | 15 | Son | — | Oregon |
| 64 | Francis W Cook | 32 | Head | Landscape Gardener | Oregon |
| 65 | Effie F Cook | 40 | Wife | Housewife | Alabama |
| 66 | Frances Jean Cook | 0 | Daughter | — | Texas |
| 67 | Samuel M Goseman | 24 | Step-son | Truck Driver | South Dakota |
| 68 | Florie J Goseman | 20 | Step-daughter | Assistant Bookkeeper | Texas |
| 69 | Erlee Goseman | 16 | Lodger | Laborer | Oregon |
| 70 | Wesley H Chitwood | 37 | Head | Carpenter | Oregon |
| 71 | Lydia E Chitwood | 31 | Wife | Housewife | Russia |
| 72 | Myrna J Chitwood | 9 | Daughter | — | Oregon |
| 73 | "Sarah ""Ab""" Fritz | 28 | Sister-in-law | Housewife | California |
| 74 | John James Leahy THIS PERSON | 54 | Head | Machinist | Oregon |
| 75 | Dorothy May Leahy | 43 | Wife | Housewife | England |
| 76 | John Alfred Leahy | 21 | Son | Plumbers Apprentice | England |
| 77 | Dorothy M Leahy | 18 | Daughter | Clerical | Oregon |
| 78 | James Robert Leahy | 13 | Son | — | Oregon |
| 79 | Frederick Joseph Ward | 45 | Brother-in-law | Packer | England |
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)