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Margaret Mcmahon — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Ramsey-County, Minnesota
Our Model Tree links this Margaret Mcmahon across the 1910, 1920, 1930 and 1940 US Censuses in Ramsey-County, Minnesota (XGBoost, ~Confirmed) — first a spouse (b.~1875), then head of a 8-person household.
Age 65
b. ~1875
Female
Spouse
Born: Minnesota
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Ramsey-County, Minnesota |
| Surname | McMahon |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 65 |
| Marital Status | Married |
| Birthplace | Minnesota |
| 1935 Residence (City) | City of St. Paul |
| 1935 Residence (County) | Ramsey |
| Additional Details | |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Township / Ward | City Of St Paul |
| Est. Birth Year | ~1875 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Margaret | Age | Birth yr |
|---|---|---|---|---|
| Gerald Ehaler | Other | — | 11 | ~1929 |
| Mary Ehaler | Daughter | — | 38 | ~1902 |
| Patrick Mcmahon | Head | — | 72 | ~1868 |
| Patrick Downing | Other | — | 72 | ~1868 |
| Francis Ehaler | Other | — | 14 | ~1926 |
| Frank Ehaler | Other | — | 38 | ~1902 |
| Margaret Mcmahon | Spouse | — | 65 | ~1875 |
| Mary Ehaler | Other | — | 9 | ~1931 |
Census Appearances
1910
Ramsey, Minnesota
Spouse, age 35
Ramsey, Minnesota · implied b. ~1875 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McMahon |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Minnesota |
| Years Married | 9 |
| Children Born | 3 |
| Children Living | 3 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1920
Ramsey, Minnesota
Spouse, age 45
Ramsey, Minnesota · implied b. ~1875 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McMahon |
| Given Name | Margaret |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Minnesota |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1930
Ramsey, Minnesota
Other, age 54
Ramsey, Minnesota · implied b. ~1876 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McMahon |
| Given Name | Margaret |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | Minnesota |
| Age at First Marriage | 26 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read/Write | Yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1940
Ramsey-County, Minnesota
Spouse, age 65
Ramsey-County, Minnesota · implied b. ~1875 — 8 household members
| Surname | McMahon |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 65 |
| Marital Status | Married |
| Birthplace | Minnesota |
| 1935 Residence (City) | City of St. Paul |
| 1935 Residence (County) | Ramsey |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
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 Margaret Mcmahon across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Margaret Mcmahon
Spouse · 1940 · age 65 · b. ~1875 · Minnesota
★ 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 — Ramsey-County, Minnesota
Open full size
1940 US Federal Census — Ramsey-County, Minnesota
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-02000-00139)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | John W Book | 78 | Head | — | Sweden |
| 42 | Ida Book | 61 | Wife | — | Sweden |
| 43 | Adrian E Klos | 35 | Head | Grocer | Minnesota |
| 44 | Henrietta W Klos | 37 | Wife | Grocer | Minnesota |
| 46 | Emma Feith | 58 | Head | Sales-Lady | Minnesota |
| 47 | Herbert Hennig | 44 | Brother | Locomotive | Minnesota |
| 48 | Francis J Murphy | 26 | Head | Machinist-Helper | Minnesota |
| 49 | Margaret Murphy | 22 | Wife | — | Wisconsin |
| 50 | Jeremiah Murphy | 3 | Son | — | Minnesota |
| 51 | James Murphy | 2 | Son | — | Minnesota |
| 52 | Charles W Kyle | 32 | Head | Shop Clerk | Minnesota |
| 53 | Henrietta Kyle | 33 | Wife | — | Minnesota |
| 54 | Patrick Mcmahon | 72 | Head | — | Minnesota |
| 55 | Margaret Mcmahon THIS PERSON | 65 | Wife | — | Minnesota |
| 56 | Mary Ehaler | 38 | Daughter | — | Minnesota |
| 57 | Frank J Ehaler | 38 | Son-in-law | Electric-Welder | Minnesota |
| 58 | Francis J Ehaler | 14 | Grand-son | — | Minnesota |
| 59 | Gerald J Ehaler | 11 | Grand-son | — | Minnesota |
| 60 | Mary Ehaler | 9 | Grand-daughter | — | Minnesota |
| 61 | Patrick Downing | 72 | Brother-in-law | — | Minnesota |
| 62 | Joseph Hoo | 59 | Head | Dishwasher | Wisconsin |
| 63 | Mary Hoo | 68 | Wife | — | Iowa |
| 64 | Joseph W Zika | 37 | Head | Car-Inspector | Minnesota |
| 65 | Frances Zika | 36 | Wife | — | Minnesota |
| 66 | William Zika | 12 | Son | — | Minnesota |
| 67 | Frances Zika | 9 | Daughter | — | Minnesota |
| 68 | John Zika | 5 | Son | — | Minnesota |
| 69 | James Zika | 1 | Son | — | Minnesota |
| 70 | Sohine Rasmussen | 72 | Head | — | Denmark |
| 71 | Clifford Rasmussen | 33 | Son | Truck-Driver | Minnesota |
| 72 | Otto M Lehmann | 46 | Head | Switchman | Minnesota |
| 73 | Mabel Lehmann | 46 | Wife | — | Minnesota |
| 74 | Bernice Lehmann | 23 | Daughter | Comptometer Operator | Minnesota |
| 75 | Muriel Lehmann | 19 | Daughter | Typist | Minnesota |
| 76 | Marjorie Lehmann | 7 | Daughter | — | Minnesota |
| 77 | Walter W Morgan | 48 | Head | Truck-Driver | Minnesota |
| 78 | Coral Morgan | 45 | Wife | — | Minnesota |
| 79 | Ruby Lois Morgan | 16 | Daughter | — | Minnesota |
| 80 | Soren Fredrickson | 77 | Head | — | Denmark |
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)