TM
Thomas Mason — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Ionia-County, Michigan
Our Model Tree links this Thomas Mason across the 1930 and 1940 US Censuses in Ionia-County, Michigan (XGBoost, ~Confirmed) — first a son (b.~1922), then head of a 11-person household.
Age 18
b. ~1922
Male
Son
Born: Michigan
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Ionia-County, Michigan |
| Surname | Mason |
| Given Name | Thomas |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Orleans Township |
| 1935 Residence (County) | Ionia |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Township / Ward | Orleans Township |
| Est. Birth Year | ~1922 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Thomas | Age | Birth yr |
|---|---|---|---|---|
| Herbert Mason | Son | — | 11 | ~1929 |
| Nancy Mason | Daughter | — | 14 | ~1926 |
| Gerald Mason | Son | — | 8 | ~1932 |
| Marian Mason | Daughter | — | 3 | ~1937 |
| Alfred Mason | Son | — | 17 | ~1923 |
| Dorman Mason | Daughter | — | 2 | ~1938 |
| Roy Mason | Son | — | 20 | ~1920 |
| Charles Mason | Head | — | 48 | ~1892 |
| Gladys Mason | Spouse | — | 41 | ~1899 |
| Thomas Mason | Son | — | 18 | ~1922 |
| Ilah Mason | Daughter | — | 24 | ~1916 |
Census Appearances
1930
Ionia, Michigan
Son, age 8
Ionia, Michigan · implied b. ~1922 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Masons |
| Given Name | Thomas C. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Ionia-County, Michigan
Son, age 18
Ionia-County, Michigan · implied b. ~1922 — 11 household members
| Surname | Mason |
| Given Name | Thomas |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Orleans Township |
| 1935 Residence (County) | Ionia |
| Income (1939) | 0 |
| 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 Thomas Mason across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Thomas Mason
Son · 1940 · age 18 · b. ~1922 · Michigan
★ You are viewing this record
Sibling
Alfred Mason
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Herbert Mason
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorman Mason
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Nancy Mason
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marian Mason
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gerald Mason
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ilah Mason
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Roy Mason
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 — Ionia-County, Michigan
Open full size
1940 US Federal Census — Ionia-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01764-00855)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Adair Berndt | 48 | wife | — | Michigan |
| 42 | Barbara Berndt | 13 | daughter | — | Michigan |
| 43 | Charles Brown | 78 | lodger | — | Michigan |
| 44 | Elgie Warden | 34 | head | Farmer | Michigan |
| 45 | Irene Warden | 34 | wife | — | Michigan |
| 46 | Carrie Leonard | 66 | head | — | Michigan |
| 47 | George Hill | 67 | head | Farmer | Michigan |
| 48 | Ella Hill | 59 | wife | — | Michigan |
| 49 | Viola Hill | 38 | daughter | — | Michigan |
| 50 | Frances Sudervine | 24 | lodger | Teacher | Michigan |
| 51 | Edith Wheeler | 70 | head | — | Michigan |
| 52 | Elva Wheeler | 40 | daughter | Seamstress | Michigan |
| 53 | Leon Wheeler | 30 | son | Farmer | Michigan |
| 54 | Clayton Wheeler | 16 | grandson | Shop Maintenance | Michigan |
| 55 | Glenn Sprague | 54 | head | Farmer | Michigan |
| 56 | William Mason | 74 | head | Farmer | Michigan |
| 57 | Charles Mason | 48 | head | Fireman | Michigan |
| 58 | Gladys Mason | 41 | wife | — | Michigan |
| 59 | Ilah Mason | 24 | daughter | — | Michigan |
| 60 | Roy Mason | 20 | son | — | Michigan |
| 61 | Thomas Mason THIS PERSON | 18 | son | — | Michigan |
| 62 | Alfred Mason | 17 | son | Laborer | Michigan |
| 63 | Nancy Mason | 14 | daughter | — | Michigan |
| 64 | Herbert Mason | 11 | son | — | Michigan |
| 65 | Gerald Mason | 8 | son | — | Michigan |
| 66 | Marian Mason | 3 | daughter | — | Michigan |
| 67 | Dorman Mason | 2 | daughter | — | Michigan |
| 68 | William Mosier | 62 | head | — | Michigan |
| 69 | Argantha Mosier | 53 | wife | — | Ohio |
| 70 | Ford Mosier | 23 | son | Laborer | Michigan |
| 71 | Maxine Mosier | 16 | daughter | — | Michigan |
| 72 | Frank Heth | 57 | head | Manager | Michigan |
| 73 | Irene Heth | 43 | wife | — | Nebraska |
| 74 | Zeta Heth | 13 | step-daughter | — | New York |
| 75 | Frederick Jenson | 61 | head | Dealer | Michigan |
| 76 | Iris Jenson | 53 | wife | — | North Dakota |
| 77 | Robert Sweet | 56 | head | Laborer | Michigan |
| 78 | Sadie Sweet | 56 | wife | — | Michigan |
| 79 | Mydith Sweet | 28 | son | Laborer | Michigan |
| 80 | Hilliard Sweet | 22 | son | Laborer | Michigan |
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)