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Mary Mcmahon — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Elkhart, Indiana
Our Model Tree links this Mary Mcmahon across the 1920, 1930 and 1940 US Censuses in Elkhart, Indiana (XGBoost, ~Confirmed) — first a spouse (b.~1876), then head of a 3-person household.
Age 54
b. ~1876
Female
Spouse
Born: Indiana
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Elkhart, Indiana |
| Surname | McMahon |
| Given Name | Mary |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | Indiana |
| Age at First Marriage | 24 |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Indiana |
| Additional Details | |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Township / Ward | Goshen City |
| Est. Birth Year | ~1876 |
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 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Chris Mcmahon | Head | — | 57 | ~1873 |
| John Mcmahon | Son | — | 23 | ~1907 |
| Mary Mcmahon | Spouse | — | 54 | ~1876 |
Census Appearances
1920
Elkhart, Indiana
Spouse, age 44
Elkhart, Indiana · implied b. ~1876 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McMahon |
| Given Name | Mary E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Elkhart, Indiana
Spouse, age 54
Elkhart, Indiana · implied b. ~1876 — 3 household members
| Surname | McMahon |
| Given Name | Mary |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | Indiana |
| Age at First Marriage | 24 |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Indiana |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Elkhart-County, Indiana
Head, age 65
Elkhart-County, Indiana · implied b. ~1875 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McMahon |
| Given Name | Mae |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 65 |
| Marital Status | Widowed |
| Birthplace | Indiana |
| 1935 Residence (City) | Goshen City |
| 1935 Residence (County) | Elkhart |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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 Mcmahon across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Mcmahon
Spouse · 1930 · age 54 · b. ~1876 · Indiana
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Elkhart, Indiana
Open full size
1930 US Federal Census — Elkhart, Indiana
Page Contents
49 people indexed on this census page (ia:1930:indianacensus00reel585:0305)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Walter Schmeykal | 46 | Head | Manager | Indiana |
| 2 | Elizabeth Schmeykal | 46 | wife | Stenographer | Indiana |
| 3 | Charles Schmeykal | 75 | father | None | Austria |
| 4 | Carrie Schmeykal | 71 | mother | None | Indiana |
| 5 | William Minnich | 52 | Head | Cashier | Indiana |
| 6 | Addison Minnich | 52 | wife | None | Ohio |
| 7 | Myron K Kramer | 32 | Head | Lineman | Ohio |
| 8 | Edith Kramer | 33 | wife | None | Ohio |
| 9 | Earl Kramer | 6 | son | None | Indiana |
| 10 | Fred Bryner | 34 | Head | Teacher | Indiana |
| 11 | Loring Bryner | 33 | wife | None | Indiana |
| 12 | Charles Bryner | 9 | son | None | Indiana |
| 13 | Doris Bryner | 6 | daughter | None | Indiana |
| 14 | Chris Mcmahon | 57 | Head | Manager | Indiana |
| 15 | Mary Mcmahon THIS PERSON | 54 | wife | None | Indiana |
| 16 | John Mcmahon | 23 | son | Bookkeeper | Indiana |
| 17 | Ella Boyer | 68 | Head | None | Indiana |
| 18 | Isaac Mammert | 52 | Head | Chauffeur | Michigan |
| 19 | Lulu Mammert | 43 | wife | Laborer | Indiana |
| 20 | Maude Mammert | 24 | daughter | None | Indiana |
| 21 | Ruth Mammert | 18 | daughter | Ironer | Indiana |
| 22 | Pauline Mammert | 12 | daughter | None | Indiana |
| 23 | Robert Mammert | 9 | son | None | Indiana |
| 24 | Nancy E Mammert | 4 | daughter | None | Indiana |
| 25 | Harley Lonsbury | 25 | Head | Laborer | Indiana |
| 26 | Concha Lonsbury | 27 | wife | Spinner | Texas |
| 27 | Valentino B Lonsbury | 7 | son | None | Indiana |
| 28 | Marion Cytoholts | 32 | Head | Manager | Indiana |
| 29 | Florence Cytoholts | 26 | wife | None | Illinois |
| 30 | Patricia Cytoholts | 1 | daughter | None | Indiana |
| 31 | Oscar H Popke | 48 | Head | Molder | Indiana |
| 32 | Rosa Popke | 47 | wife | None | Indiana |
| 33 | Harold C Popke | 23 | son | Cutter | Indiana |
| 34 | Coralean Popke | 21 | wife | Waitress | Indiana |
| 35 | Fred V Miller | 24 | Head | Meat Cutter | Ohio |
| 36 | Bernice Miller | 20 | wife | Waitress | Indiana |
| 37 | Robert Aty | 29 | Head | Salesman | Indiana |
| 38 | Hester Aty | 30 | wife | None | Indiana |
| 39 | Betty L Aty | 5 | daughter | None | Indiana |
| 40 | Connie Aty | 3 | daughter | None | Indiana |
| 41 | Warren Sheffer | 50 | Head | Clerk | Indiana |
| 42 | Jeanette Sheffer | 54 | wife | Clerk | Indiana |
| 43 | William Sheffer | 5 | son | None | Indiana |
| 44 | Glenn Maple | 23 | Head | Instructor | Indiana |
| 45 | Thelma Maple | 19 | wife | None | Indiana |
| 46 | Clyde Dorsed | 22 | Head | Lineman | Indiana |
| 47 | Mildred Dorsed | 19 | wife | None | Indiana |
| 48 | Clara Burton | 42 | Head | Bookkeeper | Pennsylvania |
| 49 | Clark Burton | 13 | son | None | Wisconsin |
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)