MM
Mary Mcmahon — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Norfolk, Massachusetts
Our Model Tree links this Mary Mcmahon across the 1900, 1910, 1920 and 1930 US Censuses in Norfolk, Massachusetts (XGBoost, ~Confirmed) — first a spouse (b.~1870), then head of a 5-person household.
Age 60
b. ~1870
Female
Spouse
Born: Ireland
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Norfolk, Massachusetts |
| Surname | McMahon |
| Given Name | Mary E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 60 |
| Marital Status | Married |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1884 |
| Age at First Marriage | 43 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Township / Ward | Braintree Town Pt |
| Est. Birth Year | ~1870 |
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.
5 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mildred Mcmahon | Daughter | — | 30 | ~1900 |
| Alice Mcmahon | Daughter | — | 25 | ~1905 |
| James Mcmahon | Head | — | 63 | ~1867 |
| John Mcmahon | Son | — | 12 | ~1918 |
| Mary Mcmahon | Spouse | — | 60 | ~1870 |
Census Appearances
1900
Middlesex, Massachusetts
Spouse, age 33
Middlesex, Massachusetts · implied b. ~1867 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McMahon |
| Given Name | Maria |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Ireland |
| Birth Month | Feb |
| Birth Year | 1867 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1910
Middlesex, Massachusetts
Spouse, age 40
Middlesex, Massachusetts · implied b. ~1870 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | MacMahon |
| Given Name | Maria |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Ireland |
| Years Married | 23 |
| Children Born | 7 |
| Children Living | 5 |
| Year of Immigration | 1882 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1920
Middlesex, Massachusetts
Spouse, age 49
Middlesex, Massachusetts · implied b. ~1871 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McMahon |
| Given Name | Maria |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Ireland |
| Year of Immigration | 1883 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Year of Naturalization | 1885 |
| Birthplace (normalized) | ireland |
1930
Norfolk, Massachusetts
Spouse, age 60
Norfolk, Massachusetts · implied b. ~1870 — 5 household members
| Surname | McMahon |
| Given Name | Mary E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 60 |
| Marital Status | Married |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1884 |
| Age at First Marriage | 43 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
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 4 US Census years (1900, 1910, 1920 and 1930) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Mcmahon
Spouse · 1930 · age 60 · b. ~1870 · Massachusetts
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Norfolk, Massachusetts
Open full size
1930 US Federal Census — Norfolk, Massachusetts
Page Contents
49 people indexed on this census page (ia:1930:massachusettscensus00reel932:0921)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Edward A. Rae | 40 | Head | Painter | Massachusetts |
| 52 | Margaret L. Rae | 31 | Wife | — | Massachusetts |
| 53 | Hazel M. Rae | 8 | Daughter | — | Massachusetts |
| 54 | Edward A. Rae | 7 | Son | — | Massachusetts |
| 55 | John F. Rae | 4 | Son | — | Massachusetts |
| 56 | William F. Rae | 2 | Son | — | Massachusetts |
| 57 | August | 67 | Head | Carpenter | Canada Eng |
| 58 | Bridget A. August | 67 | Wife | — | Ireland |
| 59 | Albert P. Nelson | 41 | Head | Engineer | Sweden |
| 60 | Jennie A. Nelson | 37 | Wife | — | Massachusetts |
| 61 | William A. Nelson | 10 | Son | — | New Jersey |
| 62 | Barbara L. Nelson | 8 | Daughter | — | Massachusetts |
| 63 | Paul S. Nelson | 6 | Son | — | Massachusetts |
| 64 | William J. Stackhouse | 31 | Head | Painter | Canada Eng |
| 65 | Ida M. Stackhouse | 34 | Wife | — | Massachusetts |
| 66 | Raymond J. Stackhouse | 9 | Son | — | Massachusetts |
| 67 | Donald Stackhouse | 2 | Son | — | Massachusetts |
| 68 | George H. Mcneil | 22 | Brother-in-law | House Painter | Massachusetts |
| 69 | Charles H. Ferguson | 24 | Head | Manager | Massachusetts |
| 70 | Catherine Ferguson | 24 | Wife | — | Massachusetts |
| 71 | Charles H. Jr. Ferguson | 3 | Son | — | Massachusetts |
| 72 | Irma I. Ferguson | 1 | Daughter | — | Massachusetts |
| 73 | James E. Mcmahon | 63 | Head | Retired | Massachusetts |
| 74 | Mary E. Mcmahon THIS PERSON | 60 | Wife | — | Ireland |
| 75 | Mildred Mcmahon | 30 | Daughter | Packer | Massachusetts |
| 76 | Alice L. Mcmahon | 25 | Daughter | Stitcher | Massachusetts |
| 77 | John R. Mcmahon | 12 | Son | — | Massachusetts |
| 78 | Harold W. Boyd | 27 | Head | Draftsman | Virginia |
| 79 | Edith M. Boyd | 27 | Wife | — | Massachusetts |
| 80 | Harold W. Jr. Boyd | 3 | Son | — | Massachusetts |
| 81 | Robert E. Boyd | 2 | Son | — | Massachusetts |
| 82 | Marion Trafton | 8 | Daughter-in-law | — | Massachusetts |
| 83 | John H. Spurell | 48 | Head | Inspector | Newfoundland |
| 84 | Elizabeth Spurell | 45 | Wife | — | Massachusetts |
| 85 | Lawrence Spurell | 20 | Son | Laborer | Massachusetts |
| 86 | Alayous E. Spurell | 15 | Daughter | — | Massachusetts |
| 87 | Harold Spurell | 14 | Son | — | Massachusetts |
| 88 | James Mcdonnell | 56 | Brother-in-law | — | Massachusetts |
| 89 | John J. Mcdonnell | 27 | Head | Driver | Massachusetts |
| 90 | Margaret E. Mcdonnell | 25 | Wife | — | Massachusetts |
| 91 | John J. Mcdonnell | 4 | Son | — | Massachusetts |
| 92 | Margaret M. Mcdonnell | 3 | Daughter | — | Massachusetts |
| 93 | George F. Sherman | 36 | Head | Driver | Massachusetts |
| 94 | Alice M. Sherman | 34 | Wife | — | Massachusetts |
| 95 | Margaret E. Sherman | 15 | Daughter | — | Massachusetts |
| 96 | Dorothy L. Sherman | 12 | Daughter | — | Massachusetts |
| 97 | Ellen R. Sherman | 6 | Daughter | — | Massachusetts |
| 98 | Pauline M. Sherman | 4 | Daughter | — | Massachusetts |
| 99 | Claire E. Sherman | 1 | Daughter | — | Massachusetts |
Related Census Records
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)