JG
James Gunn — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Floyd-County, Iowa
Our Model Tree links this James Gunn across the 1930 and 1940 US Censuses in Floyd-County, Iowa (XGBoost, ~Confirmed) — first a head (b.~1887), then head of a 4-person household.
Age 53
b. ~1887
Male
Head
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Floyd-County, Iowa |
| Surname | Gunn |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Charles City |
| 1935 Residence (County) | Floyd |
| Additional Details | |
| Occupation | Auto Mechanic |
| Industry | Local Garage |
| Class of Worker | PW |
| Hours Worked | 54 |
| Income (1939) | 1539 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Auto Mechanic |
| Township / Ward | Charles City |
| Est. Birth Year | ~1887 |
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 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Hannah Gunn | Spouse | — | 57 | ~1883 |
| James Gunn | Head | — | 53 | ~1887 |
| Katherine Gunn | Daughter | — | 23 | ~1917 |
| Marjorie Gunn | Daughter | — | 11 | ~1929 |
Census Appearances
1930
Floyd, Iowa
Head, age 42
Floyd, Iowa · implied b. ~1888 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Gunn |
| Given Name | James F |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 23 |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Iowa |
| Occupation | Mechanic |
| Industry | Garage |
| Class of Worker | 7673 |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 22 |
| Radio Set | R |
| Veteran | No |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Floyd-County, Iowa
Head, age 53
Floyd-County, Iowa · implied b. ~1887 — 4 household members
| Surname | Gunn |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Charles City |
| 1935 Residence (County) | Floyd |
| Occupation | Auto Mechanic |
| Industry | Local Garage |
| Class of Worker | PW |
| Hours Worked | 54 |
| Income (1939) | 1539 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 James Gunn across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Gunn
Head · 1940 · age 53 · b. ~1887 · Iowa
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Floyd-County, Iowa
Open full size
1940 US Federal Census — Floyd-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01161-00165)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Sanderson Cora Luster | 76 | Sister | — | Wisconsin |
| 42 | Francis Mccauley | 43 | Head | Sash Tenaner | Vermont |
| 43 | Minnie Mccauley | 41 | Wife | Housewife | Iowa |
| 44 | Roger Mccauley | 15 | Son | — | Iowa |
| 45 | Frances Wolff | 70 | Mother in law | Practical Nurse | Germany |
| 46 | Lawrence Lee | 34 | Head | Gas Station Proprietor | Minnesota |
| 47 | Clara Lee | 25 | Wife | Housewife | Minnesota |
| 48 | David Lee | 5 | Son | — | Minnesota |
| 49 | Jonathan Lee | 2 | Son | — | Minnesota |
| 50 | James Gunn THIS PERSON | 53 | Head | Auto Mechanic | Iowa |
| 51 | Hannah Gunn | 57 | Wife | Housewife | Germany |
| 52 | Katherine Gunn | 23 | Daughter | Household Helper | Iowa |
| 53 | Marjorie Gunn | 11 | Daughter | — | Iowa |
| 54 | Lena Krumrey | 52 | Head | Housekeeper | Iowa |
| 55 | Leonard Dodge | 47 | Head | Machine Operator | Iowa |
| 56 | Mary A. Dodge | 39 | Wife | Dental Assistant | Iowa |
| 57 | Charles Bierath | 57 | Head | Butcher | Illinois |
| 58 | Rena Bierath | 52 | Wife | Housewife | Vermont |
| 59 | Lloyd Bierath | 19 | Son | Helper Butcher & Meat | Iowa |
| 60 | Lynn Bierath | 19 | Son | Helper Butcher & Meat | Iowa |
| 61 | Harold Brown | 39 | Head | Machinist Metal | Illinois |
| 62 | Helen Brown | 39 | Wife | Housewife | Iowa |
| 63 | Helen Brown | 16 | Daughter | — | Iowa |
| 64 | Marie Brown | 15 | Daughter | — | Iowa |
| 65 | Robert Brown | 4 | Son | — | Iowa |
| 66 | Marlene Brown | 2 | Daughter | — | Iowa |
| 67 | Bernie Atherton | 53 | Head | Sheriff | Iowa |
| 68 | Verna Atherton | 48 | Wife | Housewife | Iowa |
| 69 | Otto Brown | 36 | Lodger | Machine Operator | Wisconsin |
| 70 | Louis Lines | 44 | Head | Yard Man | Iowa |
| 71 | Cora Lines | 47 | Wife | Housewife | Iowa |
| 72 | Elizabeth Shilling | 72 | Mother in law | — | Iowa |
| 73 | Sharon R. Shilling | 2 | Daughter | — | Iowa |
| 74 | Frank W. Clark | 41 | Head | Coremaker | England |
| 75 | Frances Clark | 44 | Wife | Housewife | Iowa |
| 76 | Edward Clark | 18 | Son | Pan-Patter | Iowa |
| 77 | Wilford Clark | 16 | Son | — | Iowa |
| 78 | Ella Ackerson | 31 | Head | Housekeeping Aide | Iowa |
| 79 | Okayma Ackerson | 5 | Daughter | — | Iowa |
| 80 | Doyle Ackerson | 3 | Son | — | Iowa |
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)