MS
Mary Shannon — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Maricopa-County, Arizona
Our Model Tree links this Mary Shannon across the 1930 and 1940 US Censuses in Maricopa-County, Arizona (XGBoost, ~Confirmed) — first a spouse (b.~1900), then head of a 6-person household.
Age 40
b. ~1900
Female
Spouse
Born: Michigan
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Maricopa-County, Arizona |
| Surname | Shannon |
| Given Name | Mary H. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Michigan |
| 1935 Residence (City) | C. S. D. #1 |
| 1935 Residence (County) | Maricopa |
| Additional Details | |
| Highest Grade | C 4 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Township / Ward | C S D 1 |
| Est. Birth Year | ~1900 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Stanton Shannon | Son | — | 11 | ~1929 |
| John Shannon | Son | — | 14 | ~1926 |
| Carl Shannon | Son | — | 12 | ~1928 |
| Matthew Shannon | Son | — | 8 | ~1932 |
| John Shannon | Head | — | 39 | ~1901 |
| Mary Shannon | Spouse | — | 40 | ~1900 |
Census Appearances
1930
Maricopa, Arizona
Other, age 30
Maricopa, Arizona · implied b. ~1900 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Shannon |
| Given Name | Mary H |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Michigan |
| Age at First Marriage | 24 |
| Father's Birthplace | Netherlands |
| Mother's Birthplace | Indiana |
| Can Read/Write | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Maricopa-County, Arizona
Spouse, age 40
Maricopa-County, Arizona · implied b. ~1900 — 6 household members
| Surname | Shannon |
| Given Name | Mary H. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Michigan |
| 1935 Residence (City) | C. S. D. #1 |
| 1935 Residence (County) | Maricopa |
| Highest Grade | C 4 |
| 1935 Residence | Same place |
| 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 Mary Shannon across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Shannon
Spouse · 1940 · age 40 · b. ~1900 · Arizona
★ 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 — Maricopa-County, Arizona
Open full size
1940 US Federal Census — Maricopa-County, Arizona
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-00107-00016)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Thomas N. Best | 39 | Head | Caretaker | Alabama |
| 42 | Bertha J. Best | 34 | Wife | — | Ohio |
| 43 | Gwendolyn M. Best | 5 | Daughter | — | Arizona |
| 44 | Patricia C. Best | 2 | Daughter | — | Arizona |
| 45 | Elizabeth L. Best | 1 | Daughter | — | Arizona |
| 46 | Ralph H. Field | 69 | Head | Citrus Farmer | Texas |
| 47 | William Messenger | 68 | Head | Livestock Buyer | England |
| 48 | Ethel Messenger | 53 | Wife | — | England |
| 49 | William S. Messenger | 18 | Son | — | Arizona |
| 50 | Louis Knapple | 35 | Head | Caretaker | Germany |
| 51 | Kresentia Knapple | 35 | Wife | — | Germany |
| 52 | Phillip Knapple | 11 | Son | — | Arizona |
| 53 | George Knapple | 10 | Son | — | Arizona |
| 54 | Verne Milleaps | 50 | Head | Produce Salesman | Idaho |
| 55 | Gladys C. Milleaps | 42 | Wife | — | Oregon |
| 56 | Russell V. Milleaps | 18 | Son | — | Nevada |
| 57 | Beverly J. Milleaps | 13 | Daughter | — | Arizona |
| 58 | Jose Duran | 52 | Head | Common Laborer | Mexico |
| 59 | John W. Shannon | 39 | Head | Farmer | New York |
| 60 | Mary H. Shannon THIS PERSON | 40 | Wife | — | Michigan |
| 61 | John H. Shannon | 14 | Son | — | Georgia |
| 62 | Carl V. Shannon | 12 | Son | — | New York |
| 63 | Stanton Shannon | 11 | Son | — | Arizona |
| 64 | Matthew E. Shannon | 8 | Son | — | Arizona |
| 65 | Helen Bristow | 65 | Head | — | Illinois |
| 67 | John Gustafson | 45 | Chauffeur | Chauffeur | Sweden |
| 68 | Jennie Gustafson | 35 | Cook | Cook | Sweden |
| 69 | Grace Baker | 25 | Maid | Maid | Iowa |
| 70 | Byron Slawson | 47 | Head | Caretaker | Indiana |
| 71 | Matilda Slawson | 44 | Wife | — | Illinois |
| 72 | Delilah Slawson | 21 | Daughter | Secretary | Arizona |
| 73 | Wanda Slawson | 19 | Daughter | Apprentice | Arizona |
| 74 | Berma Slawson | 17 | Daughter | — | Arizona |
| 75 | George J. Erhardt | 48 | Head | Accountant | Ohio |
| 76 | Freda B. Erhardt | 42 | Wife | — | Kentucky |
| 77 | Phillip T. Schneider | 45 | Head | Automobile Mechanic | Illinois |
| 78 | Mable W. Schneider | 45 | Wife | Teacher | Illinois |
| 79 | Phyllis A. Schneider | 19 | Daughter | — | Arizona |
| 80 | Phillip P. Schneider | 16 | Son | — | Arizona |
Related Census Records
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)