WM
William Mckay — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Suffolk, Massachusetts
Our Model Tree links this William Mckay across the 1920, 1930 and 1940 US Censuses in Suffolk, Massachusetts (XGBoost, ~Confirmed) — first a head (b.~1886), then head of a 4-person household.
Age 44
b. ~1886
Male
Head
Born: Scotland
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Suffolk, Massachusetts |
| Surname | McKay |
| Given Name | William J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Scotland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1888 |
| Age at First Marriage | 19 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Additional Details | |
| Occupation | Foreman |
| Industry | Boston Elevated Railway |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Scotch |
| Home Owned/Rented | R |
| Home Value / Rent | 25 |
| Radio Set | R |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
| Occupation | Foreman |
| Township / Ward | Boston City |
| Est. Birth Year | ~1886 |
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.
4 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Mary Mckay | Other | — | 44 | ~1886 |
| Helen Mckay | Daughter | — | 18 | ~1912 |
| William Mckay | Son | — | 22 | ~1908 |
| William Mckay | Head | — | 44 | ~1886 |
Census Appearances
1920
Suffolk, Massachusetts
Head, age 34
Suffolk, Massachusetts · implied b. ~1886 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McKay |
| Given Name | William W |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Scotland |
| Year of Immigration | 1887 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Machinist |
| Industry | Railroad |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Birth Country | Scotland |
| Year of Naturalization | 1906 |
| Birthplace (normalized) | scotland |
1930
Suffolk, Massachusetts
Head, age 44
Suffolk, Massachusetts · implied b. ~1886 — 4 household members
| Surname | McKay |
| Given Name | William J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Scotland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1888 |
| Age at First Marriage | 19 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Foreman |
| Industry | Boston Elevated Railway |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Scotch |
| Home Owned/Rented | R |
| Home Value / Rent | 25 |
| Radio Set | R |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1940
Suffolk-County, Massachusetts
Other, age 54
Suffolk-County, Massachusetts · implied b. ~1886 — 13 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mackey |
| Given Name | William |
| Relationship to Head | Lodger |
| Sex | M |
| Color / Race | White |
| Age | 54 |
| Marital Status | Single |
| Birthplace | Scotland |
| 1935 Residence (City) | Boston city |
| 1935 Residence (County) | Suffolk |
| Naturalization Status | Alien |
| Occupation | Mason |
| Industry | CONT. PAINTER |
| Class of Worker | PW |
| Hours Worked | 12 |
| Income (1939) | 306 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
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 Mckay across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
William Mckay
Head · 1930 · age 44 · b. ~1886 · Massachusetts
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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 — Suffolk, Massachusetts
Open full size
1930 US Federal Census — Suffolk, Massachusetts
Page Contents
50 people indexed on this census page (ia:1930:massachusettscensus00reel958:0924)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | John De Nato | 79 | Head | Retired | Italy |
| 52 | Faustina De Nato | 76 | Wife-H | — | Italy |
| 53 | Teresa Barbiero | 46 | Head-H | Dresswork | Italy |
| 54 | Elizabeth Barbiero | 16 | Daughter | Machine Operator | Massachusetts |
| 55 | Fred J. Casey | 44 | Head | Office Clerk | Canada-English |
| 56 | Elizabeth B. Casey | 36 | Wife-H | Attendant | Northern Ireland |
| 57 | Patrick J. Casey | 12 | Son | None | Connecticut |
| 58 | Robert J. Casey | 10 | Son | None | Connecticut |
| 59 | William J. Mckay THIS PERSON | 44 | Head | Foreman | Scotland |
| 60 | Mary E. Mckay | 44 | Wife-H | None | Massachusetts |
| 61 | William H. Mckay | 22 | Son | Chauffeur | Massachusetts |
| 62 | Helen Mckay | 18 | Daughter | General Office Work | Massachusetts |
| 63 | Emma Silver | 42 | Head | Forewoman | Massachusetts |
| 64 | Paul Silver | 44 | Boarder | Bus Operator | New Hampshire |
| 65 | Daniel J. Whittock | 60 | Head | Watchman | Massachusetts |
| 66 | Mary E. Whittock | 59 | Wife-H | None | England |
| 67 | Thomas J. Whittock | 29 | Son | Shipper | Massachusetts |
| 68 | Dorothy Fahey | 22 | Boarder | None | Massachusetts |
| 69 | Edward Rynald | 38 | Boarder | None | Massachusetts |
| 70 | John V. Callahan | 54 | Head | Labour | Massachusetts |
| 71 | Catherine Callahan | 55 | Wife-H | None | Massachusetts |
| 72 | Lillian Lamonchia | 18 | Step-daughter | Spinner | Massachusetts |
| 73 | Joseph J. Winters | 35 | Head | Chauffeur | Massachusetts |
| 74 | Mary F. Winters | 35 | Wife-H | None | Massachusetts |
| 75 | Francis Winters | 16 | Son | Laborer | Massachusetts |
| 76 | James Winters | 15 | Son | None | Massachusetts |
| 77 | Katherine Winters | 13 | Daughter | None | Massachusetts |
| 78 | Mary Winters | 12 | Daughter | None | Massachusetts |
| 79 | John Winters | 10 | Son | None | Massachusetts |
| 80 | Anna Winters | 9 | Daughter | None | Massachusetts |
| 81 | John Markus | 34 | Head | Baker | Lithuania |
| 82 | Pauline Markus | 33 | Wife-H | Machine Operator | Lithuania |
| 83 | Justin Rukartich | 18 | Step-son | Mechanic | Massachusetts |
| 84 | Adella Rukartich | 10 | Step-daughter | None | Massachusetts |
| 85 | Donald J. Rivers | 45 | Head | Carpenter | Maine |
| 86 | Olive D. Rivers | 49 | Wife-H | None | Maine |
| 87 | Clarence M. Rivers | 22 | Son | Mechanic | Massachusetts |
| 88 | Mabel A. Rivers | 19 | Daughter | None | Massachusetts |
| 89 | Alice D. Rivers | 17 | Daughter | None | Massachusetts |
| 90 | Thomas S. Rivers | 15 | Son | None | Massachusetts |
| 91 | Ethan S. Morrison | 22 | Nephew | None | Maine |
| 92 | Mary R. Ramsay | 41 | Head | Saleslady | Maine |
| 93 | Dorothy J. Ramsay | 14 | Daughter | None | Maine |
| 94 | William M. Ramsay | 13 | Son | None | Maine |
| 95 | Mary L. Fitzpatrick | 26 | Head | None | Massachusetts |
| 96 | Mary L. Fitzpatrick | 54 | Mother | Nurse | Massachusetts |
| 97 | Arthur Fitzpatrick | 32 | Brother | Guard | Massachusetts |
| 98 | Andrew Polansky | 33 | Head | Janitor | Poland |
| 99 | Frances Polansky | 31 | Wife-H | None | Poland |
| 100 | Helen Polansky | 14 | Daughter | None | Massachusetts |
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)