JM
James Macdonald — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Allegheny, Pennsylvania
Our Model Tree links this James Macdonald across the 1930 and 1940 US Censuses in Allegheny, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1896), then head of a 7-person household.
Age 34
b. ~1896
Male
Head
Born: Scotland
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Allegheny, Pennsylvania |
| Surname | MacDonald |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Scotland |
| Naturalization Status | Alien |
| Year of Immigration | 1923 |
| Age at First Marriage | 24 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Additional Details | |
| Occupation | Labour |
| Industry | Steel Mill |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Home Value / Rent | 30.00 |
| Veteran | No |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
| Occupation | Labour |
| Township / Ward | Pittsburgh City |
| Est. Birth Year | ~1896 |
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.
7 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| William Macdonald | Son | — | 7 | ~1923 |
| Betty Macdonald | Daughter | — | 9 | ~1921 |
| Ramsey Macdonald | Son | — | ~1930 | |
| Archie Macdonald | Son | — | 2 | ~1928 |
| Irene Macdonald | Daughter | — | 3 | ~1927 |
| James Macdonald | Head | — | 34 | ~1896 |
| Margaret Macdonald | Other | — | 28 | ~1902 |
Census Appearances
1930
Allegheny, Pennsylvania
Head, age 34
Allegheny, Pennsylvania · implied b. ~1896 — 7 household members
| Surname | MacDonald |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Scotland |
| Naturalization Status | Alien |
| Year of Immigration | 1923 |
| Age at First Marriage | 24 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Labour |
| Industry | Steel Mill |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Home Value / Rent | 30.00 |
| Veteran | No |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1940
Washington-County, Pennsylvania
Head, age 45
Washington-County, Pennsylvania · implied b. ~1895
●
Primary link
· ~Confirmed · 1 source
XGBoost
| Surname | McDonald |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Scotland |
| 1935 Residence (City) | West Bethlehem Township |
| 1935 Residence (County) | Washington |
| Naturalization Status | Naturalized |
| Occupation | Shot Firer |
| Industry | Mining |
| Class of Worker | PW |
| Hours Worked | 28 |
| Income (1939) | 468 |
| Highest Grade | No 4 |
| 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 James Macdonald across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Macdonald
Head · 1930 · age 34 · b. ~1896 · Pennsylvania
★ 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 — Allegheny, Pennsylvania
Open full size
1930 US Federal Census — Allegheny, Pennsylvania
Page Contents
50 people indexed on this census page (ia:1930:fifteenthcensus00reel1978:0941)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | James Arthur | 33 | Head | Filler | Wales |
| 2 | Margaret Arthur | 29 | Wife-H | — | Pennsylvania |
| 3 | James Arthur | 4 | Son | None | Pennsylvania |
| 4 | Arnold Arthur | 2 | Son | None | Pennsylvania |
| 5 | James Macdonald THIS PERSON | 34 | Head | Labour | Scotland |
| 6 | Margaret Macdonald | 28 | Wife-H | None | Scotland |
| 7 | Betty Macdonald | 9 | Daughter | None | Scotland |
| 8 | William Macdonald | 7 | Son | None | Scotland |
| 9 | Irene Macdonald | 3 | Daughter | None | Pennsylvania |
| 10 | Archie Macdonald | 2 | Son | None | Pennsylvania |
| 11 | Ramsey Macdonald | 0 | Son | None | Pennsylvania |
| 12 | Ernest Braun | 40 | Head | Labour | Pennsylvania |
| 13 | Julia Braun | 38 | Wife-H | Clerk | Pennsylvania |
| 14 | Violet Braun | 19 | Daughter | Clerk | Pennsylvania |
| 15 | Josephine Williams | 59 | Head-H | None | Pennsylvania |
| 16 | Evan Williams | 33 | Son | Tinner | Pennsylvania |
| 17 | Thos Williams | 29 | Son | Labour | Pennsylvania |
| 18 | Olive Williams | 22 | Daughter | None | Pennsylvania |
| 19 | S. Mason Williams | 17 | Son | None | Pennsylvania |
| 20 | Harry Mcnall | 12 | Lodger | None | Pennsylvania |
| 21 | Frank Stachelski | 39 | Head | Labour | Poland |
| 22 | Mary Stachelski | 22 | Wife-H | None | Poland |
| 23 | William Barkley | 35 | Head | Labour | Pennsylvania |
| 24 | Emma Barkley | 33 | Wife-H | None | Pennsylvania |
| 25 | Virginia Barkley | 12 | Daughter | None | Pennsylvania |
| 26 | Wm. A. Zacker | 29 | Head | Painter | Pennsylvania |
| 27 | Bertha Zacker | 27 | Wife-H | None | Ohio |
| 28 | Bertha D. Zacker | 9 | Daughter | None | Pennsylvania |
| 29 | William Zacker | 1 | Son | None | Pennsylvania |
| 30 | Edwin Collins | 53 | Head | Labour | Pennsylvania |
| 31 | Kate Collins | 49 | Wife-H | None | Pennsylvania |
| 32 | Edwin Collins | 26 | Son | Labour | Pennsylvania |
| 33 | Russell Collins | 18 | Son | Labour | Pennsylvania |
| 34 | Elsie Collins | 17 | Daughter | None | Pennsylvania |
| 35 | Olive Collins | 15 | Son | None | Pennsylvania |
| 36 | Earl Collins | 12 | Son | None | Pennsylvania |
| 37 | Arthur Collins | 10 | Son | None | Pennsylvania |
| 38 | Clyde Collins | 6 | Son | None | Pennsylvania |
| 39 | John Murphy | 45 | Head | Carpenter | England |
| 40 | Sarah Murphy | 43 | Wife-H | None | England |
| 41 | Elizabeth Murphy | 15 | Daughter | None | England |
| 42 | Margaret Murphy | 13 | Daughter | None | England |
| 43 | Annie Murphy | 11 | Daughter | None | England |
| 44 | Lorrine Taylor | 3 | Daughter | None | Pennsylvania |
| 45 | Robert Smith | 1 | Boarder | None | Pennsylvania |
| 46 | Alex Francis | 28 | Head | Labour | Wales |
| 47 | Mary Francis | 24 | Wife-H | None | Germany |
| 48 | Alex Jr Francis | 3 | Son | None | Pennsylvania |
| 49 | Doris Francis | 1 | Daughter | None | Pennsylvania |
| 50 | — | None | — | — | — |
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)