WM
William Mcmahon — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Providence, Rhode Island
Our Model Tree links this William Mcmahon across the 1920 and 1930 US Censuses in Providence, Rhode Island (XGBoost, ~Confirmed) — first a son (b.~1915), then head of a 8-person household.
Age 15
b. ~1915
Male
Son
Born: Rhode Island
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Providence, Rhode Island |
| Surname | McMahon |
| Given Name | William J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Rhode Island |
| Father's Birthplace | England |
| Mother's Birthplace | Rhode Island |
| Additional Details | |
| Occupation | Wrapper |
| Industry | Real Silk Co. |
| Class of Worker | 7728 |
| Can Read/Write | Yes |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
| Occupation | Wrapper |
| Township / Ward | East Providence Town |
| Est. Birth Year | ~1915 |
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 1930 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Alfred Mcmahon | Son | — | 12 | ~1918 |
| Agnes Mcmahon | Daughter | — | 10 | ~1920 |
| William Mcmahon | Son | — | 15 | ~1915 |
| Alfred Mcmahon | Head | — | 48 | ~1882 |
| John Mcmahon | Son | — | 6 | ~1924 |
| Joseph Mcmahon | Son | — | 14 | ~1916 |
| Margaret Mcmahon | Daughter | — | 17 | ~1913 |
| Agnes Mcmahon | Other | — | 41 | ~1889 |
Census Appearances
1920
Providence, Rhode …
Son, age 4
Providence, Rhode Island · implied b. ~1916 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McMahon |
| Given Name | William G. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Rhode Island |
| Father's Birthplace | England |
| Mother's Birthplace | Rhode Island |
| Occupation | none |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
1930
Providence, Rhode …
Son, age 15
Providence, Rhode Island · implied b. ~1915 — 8 household members
| Surname | McMahon |
| Given Name | William J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Rhode Island |
| Father's Birthplace | England |
| Mother's Birthplace | Rhode Island |
| Occupation | Wrapper |
| Industry | Real Silk Co. |
| Class of Worker | 7728 |
| Can Read/Write | Yes |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
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 William Mcmahon across 2 US Census years (1920 and 1930) in Providence, Rhode Island, using XGBoost record linkage.
Show:
This person
Anchor record
William Mcmahon
Son · 1930 · age 15 · b. ~1915 · Rhode Island
★ You are viewing this record
Sibling
Margaret Mcmahon
Sibling · 1930 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Agnes Mcmahon
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Mcmahon
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Mcmahon
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alfred Mcmahon
Sibling · 1930 · age 12
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
1930 US Federal Census — Providence, Rhode Island
Open full size
1930 US Federal Census — Providence, Rhode Island
Page Contents
50 people indexed on this census page (ia:1930:15thcensus2172unit:0024)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Chester A. Miller | 63 | Head | General Man | Rhode Island |
| 2 | Clara M. Miller | 42 | Wife-H | — | Massachusetts |
| 3 | Woodmancy, Herbert C. Miller | 16 | Step-son | Office Boy | Rhode Island |
| 4 | Eugene, Durant Miller | 23 | Boarder | — | Rhode Island |
| 5 | Peter J. Nelson | 51 | Head | Silversmith | Sweden |
| 6 | Addie L. Nelson | 53 | Wife-H | — | Rhode Island |
| 7 | Edith W. Nelson | 21 | Daughter | Inspector | Rhode Island |
| 8 | Truman F. Nelson | 19 | Son | Shipping Clerk | Rhode Island |
| 9 | Hope B. Nelson | 11 | Daughter | — | Rhode Island |
| 10 | Albert E. Nelson | 10 | Son | — | Rhode Island |
| 11 | Charity Yearuld | 24 | Daughter | Winder | Rhode Island |
| 12 | Peter Jr. Yearuld | 4 | Son | — | Rhode Island |
| 13 | Virginia G. Herrell | 4 | Dau. | — | Rhode Island |
| 14 | Anna Cassidy | 41 | Head-H | — | Rhode Island |
| 15 | Louis E. Cassidy | 10 | Son | — | Rhode Island |
| 16 | George Marriott | 61 | Head | — | England |
| 17 | Maude Marriott | 63 | Wife-H | — | England |
| 18 | George F. Marriott | 36 | Son | Laborer | Rhode Island |
| 19 | Edward Sheldon | 40 | Head | Foreman | England |
| 20 | Gladys M. Sheldon | 37 | Wife-H | — | Rhode Island |
| 21 | Gwendolyn M. Sheldon | 5 | Daughter | — | Rhode Island |
| 22 | Eliza E. Read | 65 | Head-H | — | England |
| 23 | Alice Burnside | 47 | Head-H | — | Canada-French |
| 24 | Alice Burnside | 28 | Daughter | Inspector | Rhode Island |
| 25 | Beatrice Burnside | 27 | Daughter | Sewer | Rhode Island |
| 26 | Eveline Burnside | 23 | Daughter | Winder | Rhode Island |
| 27 | Alberta Burnside | 21 | Daughter | Trimming | Rhode Island |
| 28 | Edwin L. Burnside | 19 | Son | Inspector | Rhode Island |
| 29 | Leo W. Burnside | 16 | Son | Laborer | Rhode Island |
| 30 | Margaret M. Burnside | 11 | Daughter | — | Rhode Island |
| 31 | Joseph M. Burnside | 7 | Son | — | Rhode Island |
| 32 | Alfred J. Mcmahon | 48 | Head | Dyer | England |
| 33 | Agnes J. Mcmahon | 41 | Wife-H | — | Rhode Island |
| 34 | Margaret J. Mcmahon | 17 | Daughter | Laborer | Rhode Island |
| 35 | William J. Mcmahon THIS PERSON | 15 | Son | Wrapper | Rhode Island |
| 36 | Joseph H. Mcmahon | 14 | Son | — | Rhode Island |
| 37 | Alfred J. Jr. Mcmahon | 12 | Son | — | Rhode Island |
| 38 | Agnes J. Mcmahon | 10 | Daughter | — | Rhode Island |
| 39 | John Mcmahon | 6 | Son | — | Rhode Island |
| 40 | Randolph A. Keppie | 41 | Head-H | Typewriter | Scotland |
| 41 | John Keenan | 58 | Head | Laborer | Northern Ireland |
| 42 | Mary Keenan | 58 | Wife-H | — | Northern Ireland |
| 43 | John Jr. Keenan | 27 | Son | Waiter | Rhode Island |
| 44 | Catherine Keenan | 26 | Daughter | Leveling | Rhode Island |
| 45 | Mary L. Keenan | 24 | Daughter | Folder | Rhode Island |
| 46 | James Keenan | 21 | Son | Laborer | Rhode Island |
| 47 | Joseph Keenan | 13 | Son | — | Rhode Island |
| 48 | Fredie Watt | 33 | Daughter-H | Waitress | Rhode Island |
| 49 | Irene Watt | 7 | Gr. Dau. | — | Rhode Island |
| 50 | Margaret Finnegan | 47 | Sister-in-law | — | Northern Ireland |
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)