JL
John Logan — 1930 US Census Record
Model Tree available1930 United States Federal Census · Lewis And Clark, Montana
Our Model Tree links this John Logan across the 1920, 1930 and 1940 US Censuses in Lewis And Clark, Montana (XGBoost, ~Confirmed), with identified parents Martin & Bridget — first a son (b.~1909), then head of a 4-person household.
Age 21
b. ~1909
Male
Son
Born: Montana
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Lewis And Clark, Montana |
| Surname | Logan |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Montana |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Occupation | Laborer |
| Industry | Smelter |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
| Occupation | Laborer |
| Township / Ward | East Helena City |
| Est. Birth Year | ~1909 |
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.
4 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Marten Logan | Head | — | 63 | ~1867 |
| Bridget Logan | Other | — | 57 | ~1873 |
| John Logan | Son | — | 21 | ~1909 |
| Edward Logan | Son | — | 22 | ~1908 |
Census Appearances
1920
Lewis And …
Son, age 11
Lewis And Clark, Montana · implied b. ~1909 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Logan |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Montana |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
1930
Lewis And …
Son, age 21
Lewis And Clark, Montana · implied b. ~1909 — 4 household members
| Surname | Logan |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Montana |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Laborer |
| Industry | Smelter |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
1940
Lewis-And-Clark-County, Montana
Head, age 32
Lewis-And-Clark-County, Montana · implied b. ~1908 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Logans |
| Given Name | John B. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Montana |
| 1935 Residence (City) | East Helena town |
| Occupation | Laborer |
| Industry | Smelter |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 935 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
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 Logan across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Martin Logan (~0.92 confidence) and mother Bridget Logan (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Martin Logan
b. ~1868
Source father
● Household
· direct · ~0.92
Mother
Bridget Logan
b. ~1875
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Logan
Son · 1930 · age 21 · b. ~1909 · Montana
★ You are viewing this record
Sibling
Edward Logan
Sibling · 1930 · age 22
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
1930 US Federal Census — Lewis And Clark, Montana
Open full size
1930 US Federal Census — Lewis And Clark, Montana
Page Contents
50 people indexed on this census page (ia:1930:15thcensus1258unit:0346)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Doris O Pearce | 1 | Daughter | None | Montana |
| 52 | Richard Pearce | 0 | Son | None | Montana |
| 53 | George H Rate | 27 | Head | Brick Mason | England |
| 54 | Amanda P Rate | 52 | Wife-H | None | Wisconsin |
| 55 | Alice Rate | 26 | Daughter | None | Montana |
| 56 | Henry Rate | 24 | Son | Tapper | Montana |
| 57 | Bernice Hughes | 21 | Daughter | None | Montana |
| 58 | Herbert Rate | 19 | Son | Laborer | Montana |
| 59 | Alfred Rate | 17 | Son | Deliveryman | Montana |
| 60 | Dorothy Rate | 13 | Daughter | None | Montana |
| 61 | Amanda E Rate | 10 | Daughter | None | Montana |
| 62 | Evan B Hughes | 37 | Son-in-law | Arch Puncher | Wales |
| 63 | Harry Lien | 40 | Head | Motorman | Minnesota |
| 64 | Mabel A Lien | 38 | Wife-H | None | Minnesota |
| 65 | Harold O Lien | 18 | Son | Laborer-Farm | North Dakota |
| 66 | R Aurelia Lien | 15 | Son | None | North Dakota |
| 67 | Irene M Lien | 13 | Daughter | None | North Dakota |
| 68 | Eugene W Lien | 9 | Son | None | North Dakota |
| 69 | Merlin A Lien | 8 | Son | None | North Dakota |
| 70 | Wilmer N Lien | 5 | Son | None | Montana |
| 71 | John Lien | 2 | Son | None | Montana |
| 72 | Julius Smith | 72 | Head | Motorman | Belgium |
| 73 | Elizabeth Smith | 37 | Wife-H | None | Wisconsin |
| 74 | Julius Smith | 12 | Son | None | Wisconsin |
| 75 | Marten Logan | 63 | Head | Laborer | Ireland |
| 76 | Bridget Logan | 57 | Wife-H | None | Ireland |
| 77 | Edward Logan | 22 | Son | None | Montana |
| 78 | John Logan THIS PERSON | 21 | Son | Laborer | Montana |
| 79 | James Reardon | 76 | Head | Laborer | Ireland |
| 80 | Mary Reardon | 74 | Wife-H | None | Ireland |
| 81 | James Reardon | 41 | Son | None | Montana |
| 82 | John Reardon | 32 | Son | None | Montana |
| 83 | Mary Reardon | 28 | Daughter | None | Montana |
| 84 | Patrick Reardon | 22 | Son | Laborer | Montana |
| 85 | John Peters | 52 | Head | Laborer | Austria |
| 86 | Mary Peters | 47 | Wife-H | None | Austria |
| 87 | John Peters | 18 | Son | None | Montana |
| 88 | Catherine Peters | 16 | Daughter | None | Montana |
| 89 | Frank Morello | 30 | Head | Laborer | Italy |
| 90 | Clara M Morello | 23 | Wife-H | None | Poland |
| 91 | Dorothy M Morello | 4 | Daughter | None | Montana |
| 92 | Frank Morello | 3 | Son | None | Montana |
| 93 | Edward J Morello | 1 | Son | None | Montana |
| 94 | Frank Morn | 52 | Head | Laborer | Michigan |
| 95 | Emma Morn | 43 | Wife-H | None | Utah |
| 96 | Frank Morn | 20 | Son | Laborer | Utah |
| 97 | James Morn | 20 | Son | Laborer | Utah |
| 98 | Margaret Morn | 17 | Daughter | None | Utah |
| 99 | James Gough | 63 | Head | Fireman | Northern Ireland |
| 100 | Mary Gough | 60 | Wife-H | None | Ireland |
Pedigree Summary
John + 1 sibling
Gen 1 · 2 parents
~0.92
Max depth 4 (1900–1950 window)
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)