HM
Harry Mason — 1940 US Census Record
Model Tree available1940 United States Federal Census · Clark-County, Ohio
Our Model Tree links this Harry Mason across the 1910, 1920, 1930 and 1940 US Censuses in Clark-County, Ohio (XGBoost, ~Confirmed), with identified parents Harry & Lulu — first a head (b.~1891), then head of a 3-person household.
Age 49
b. ~1891
Male
Head
Born: Ohio
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Clark-County, Ohio |
| Surname | Mason |
| Given Name | Harry H |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Ohio |
| 1935 Residence (City) | Springfield |
| 1935 Residence (County) | Clark |
| Additional Details | |
| Occupation | Truck driver |
| Industry | Laundry |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1820 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same House |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Truck Driver |
| Township / Ward | Springfield |
| Est. Birth Year | ~1891 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Harry | Age | Birth yr |
|---|---|---|---|---|
| Harry Mason | Head | — | 49 | ~1891 |
| Leona Mason | Spouse | — | 46 | ~1894 |
| Dorothy Mason | Daughter | — | 21 | ~1919 |
Census Appearances
1910
Clark, Ohio
Son, age 20
Clark, Ohio · implied b. ~1890 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mason |
| Given Name | Harry |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1920
Clark, Ohio
Head, age 29
Clark, Ohio · implied b. ~1891 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mason |
| Given Name | Harry |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Occupation | Labor |
| Industry | Miller Pant W. |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Clark, Ohio
Head, age 39
Clark, Ohio · implied b. ~1891 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mason |
| Given Name | Harry H |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Ohio |
| Age at First Marriage | 24 |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Occupation | Driver |
| Industry | Laundry |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 2500 |
| Radio Set | R |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Clark-County, Ohio
Head, age 49
Clark-County, Ohio · implied b. ~1891 — 3 household members
| Surname | Mason |
| Given Name | Harry H |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Ohio |
| 1935 Residence (City) | Springfield |
| 1935 Residence (County) | Clark |
| Occupation | Truck driver |
| Industry | Laundry |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1820 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same House |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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 Harry Mason across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Harry Mason (~0.92 confidence) and mother Lulu Mason (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Harry Mason
b. ~1869
Source father
● Household
· direct · ~0.92
Mother
Lulu Mason
b. ~1870
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Harry Mason
Head · 1940 · age 49 · b. ~1891 · Ohio
★ 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 — Clark-County, Ohio
Open full size
1940 US Federal Census — Clark-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03040-00325)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Harry H Mason THIS PERSON | 49 | Head | Truck Driver | Ohio |
| 2 | Leona M Mason | 46 | Wife | — | Ohio |
| 3 | Dorothy J Mason | 21 | Daughter | Sten | Ohio |
| 4 | Clarence L Mcmichel | 45 | Head | Sheet Metal | Ohio |
| 5 | Helen S Mcmichel | 40 | Wife | — | Ohio |
| 6 | Richard C Mcmichel | 18 | Son | — | Ohio |
| 7 | Barbara L Mcmichel | 11 | Daughter | — | Ohio |
| 8 | Judson J Hufford | 35 | Head | Truck-Driver | Ohio |
| 9 | Mabel D Hufford | 33 | Wife | — | Ohio |
| 10 | Phyllis A Hufford | 11 | Daughter | — | Ohio |
| 11 | Eloise M Hufford | 8 | Daughter | — | Ohio |
| 12 | George L Fetter | 44 | Head | Mail Carrier | Ohio |
| 13 | Esther L Fetter | 41 | Wife | — | Ohio |
| 14 | Robert A Fetter | 18 | Son | — | Ohio |
| 15 | Norma J Fetter | 15 | Daughter | — | Ohio |
| 16 | Henry Spichty | 69 | Head | — | Ohio |
| 17 | Rosa C Spichty | 66 | Wife | — | Ohio |
| 18 | Richard W Little | 42 | Head | Metal Finisher | Illinois |
| 19 | Alice M Little | 44 | Wife | — | Ohio |
| 20 | Martha L Little | 15 | Daughter | — | Ohio |
| 21 | Charles P Lough | 44 | Head | Sheet-Metal Worker | W. Virginia |
| 22 | Helen E Lough | 32 | Wife | — | Ohio |
| 23 | Martha A Lough | 8 | Daughter | — | Ohio |
| 24 | Mary E Lough | 3 | Daughter | — | Ohio |
| 25 | Edith P Meyers | 57 | Head | — | Ohio |
| 26 | Roger B Meyers | 27 | Son | New Worker Assistant Manager | Ohio |
| 27 | Maurice M Meyers | 27 | Son-in-law | — | Alabama |
| 28 | Charles H Kizer | 71 | Head | — | Ohio |
| 29 | Lillie M Kizer | 67 | Wife | — | Ohio |
| 30 | John C Hyatt | 41 | Head | Welder | Ohio |
| 31 | Elsie J Hyatt | 32 | Wife | — | Ohio |
| 32 | Lillian M Cunningham | 15 | Daughter | — | Ohio |
| 33 | Jean Cunningham | 13 | Step-daughter | — | Ohio |
| 34 | Ikay P Chase | 36 | Head | Machinist | Ohio |
| 35 | Thelma C Chase | 23 | Wife | — | Ohio |
| 36 | Jack R Chase | 4 | Son | — | Ohio |
| 37 | Harry R Murray | 51 | Head | Bench Worker | Ohio |
| 38 | Vera M Murray | 52 | Wife | — | Ohio |
| 39 | Paul E Dixon | 27 | Head | Truck Driver | Ohio |
| 40 | Loring E Dixon | 18 | Wife | — | Ohio |
Pedigree Summary
Harry
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 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)