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James Mcdonald — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Delaware, Iowa
Our Model Tree links this James Mcdonald across the 1910, 1920 and 1930 US Censuses in Delaware, Iowa (XGBoost, ~Confirmed) — first a head (b.~1868), then head of a 3-person household.
Age 62
b. ~1868
Male
Head
Born: Iowa
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Delaware, Iowa |
| Surname | McDonald |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 62 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 28 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Additional Details | |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | O |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Farmer |
| Township / Ward | Hazel Green Township |
| Est. Birth Year | ~1868 |
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.
3 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Marguerite Mcdonald | Daughter | — | 24 | ~1906 |
| James Mcdonald | Head | — | 62 | ~1868 |
| Anna Mcdonald | Other | — | 54 | ~1876 |
Census Appearances
1910
Delaware, Iowa
Head, age 42
Delaware, Iowa · implied b. ~1868 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDonald |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Iowa |
| Years Married | 12 |
| Father's Birthplace | Ire English |
| Mother's Birthplace | Ire English |
| Occupation | Farmer |
| Industry | General farm |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1920
Delaware, Iowa
Head, age 51
Delaware, Iowa · implied b. ~1869 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDonald |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Iowa |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Delaware, Iowa
Head, age 62
Delaware, Iowa · implied b. ~1868 — 3 household members
| Surname | McDonald |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 62 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 28 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | O |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 Mcdonald across 3 US Census years (1910, 1920 and 1930) in Delaware, Iowa, using XGBoost record linkage.
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This person
Anchor record
James Mcdonald
Head · 1930 · age 62 · b. ~1868 · Iowa
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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 — Delaware, Iowa
Open full size
1930 US Federal Census — Delaware, Iowa
Page Contents
50 people indexed on this census page (ia:1930:iowacensus00reel652:0569)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Freida Witt | 14 | Daughter | — | Iowa |
| 2 | Emma Witt | 8 | Daughter | — | Iowa |
| 3 | Frank Mcgreavy | 48 | Head | Farmer | Iowa |
| 4 | Mary Ellen Mcgreavy | 46 | Wife-H | — | Iowa |
| 5 | Bernice Mcgreavy | 19 | Daughter | — | Iowa |
| 6 | Mae Mcgreavy | 17 | Daughter | — | Iowa |
| 7 | Donovan Mcgreavy | 15 | Son | — | Iowa |
| 8 | Lorraine Mcgreavy | 12 | Daughter | — | Iowa |
| 9 | Loras Mcgreavy | 11 | Son | — | Iowa |
| 10 | Kathleen Mcgreavy | 9 | Daughter | — | Iowa |
| 11 | Bernadette Mcgreavy | 7 | Daughter | — | Iowa |
| 12 | Flora Mcgreavy | 5 | Daughter | — | Iowa |
| 13 | Roy Aldrich | 42 | Head | Farmer | Iowa |
| 14 | Gladys Aldrich | 39 | Wife-H | — | Iowa |
| 15 | Milton Aldrich | 22 | Son | Laborer | Iowa |
| 16 | Blanche Aldrich | 20 | Daughter | Teacher | Iowa |
| 17 | Vifian Aldrich | 18 | Daughter | Teacher | Iowa |
| 18 | Ronald Aldrich | 16 | Son | — | Iowa |
| 19 | Dean Aldrich | 13 | Son | — | Iowa |
| 20 | Raymond Aldrich | 9 | Son | — | Iowa |
| 21 | Arthur Luck | 26 | Head | Farmer | Iowa |
| 22 | Clara Luck | 22 | Wife-H | — | Iowa |
| 23 | Dorothy Luck | 4 | Daughter | — | Iowa |
| 24 | Lavina Luck | 2 | Daughter | — | Iowa |
| 25 | Floyd Aldrich | 38 | Head | Farmer | Iowa |
| 26 | Mary Aldrich | 32 | Wife-H | — | Iowa |
| 27 | Howard Aldrich | 12 | Son | — | Iowa |
| 28 | Doran Aldrich | 11 | Son | — | Iowa |
| 29 | Emeline Aldrich | 78 | Mother | — | New York |
| 30 | James Mcdonald THIS PERSON | 62 | Head | Farmer | Iowa |
| 31 | Anna Mcdonald | 54 | Wife-H | — | Iowa |
| 32 | Marguerite Mcdonald | 24 | Daughter | — | Iowa |
| 33 | Carl Hawker | 71 | Head | Farmer | Germany |
| 34 | Amelia Hawker | 61 | Wife-H | — | Germany |
| 35 | John Mangold | 58 | Head | Farmer | Iowa |
| 36 | Annie Mangold | 57 | Wife-H | — | Irish Free State |
| 37 | John Mangold | 27 | Son | Farmer | Iowa |
| 38 | Frances Mangold | 29 | Daughter | Teacher | Iowa |
| 39 | Irene Mangold | 22 | Daughter | Saleswoman | Iowa |
| 40 | James Fleming | 48 | Head | Farmer | Iowa |
| 41 | Daniel Heymann | 41 | Hiredman | Laborer | Iowa |
| 42 | Daniel O'Sullivan | 65 | Head | Farmer | Iowa |
| 43 | Margaret O'Sullivan | 67 | Wife-H | — | Iowa |
| 44 | Marguerite O'Sullivan | 22 | Daughter | — | Iowa |
| 45 | Francis O'Sullivan | 30 | Son | Laborer | Iowa |
| 46 | Harry O'Sullivan | 28 | Son | Farmer | Iowa |
| 47 | Blanche O'Sullivan | 24 | Daughter-in-law | — | Iowa |
| 48 | Grace O'Sullivan | 24 | Daughter-in-law | Teacher | Iowa |
| 49 | Daniel Rogers | 2 | Grandson | — | Iowa |
| 50 | Stella Rogers | 2 | Granddaughter | — | Iowa |
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)