RM
Robert Mcdonald — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Clinton, Iowa
Our Model Tree links this Robert Mcdonald across the 1930 and 1940 US Censuses in Clinton, Iowa (XGBoost, ~Confirmed) — first a son (b.~1923), then head of a 10-person household.
Age 7
b. ~1923
Male
Son
Born: Iowa
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Clinton, Iowa |
| Surname | McDonald |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Additional Details | |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Clinton City |
| Est. Birth Year | ~1923 |
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.
10 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Rita Mcdonald | Daughter | — | 4 | ~1926 |
| Natalie Mcdonald | Daughter | — | 10 | ~1920 |
| John Mcdonald | Head | — | 40 | ~1890 |
| Gerald Mcdonald | Son | — | 8 | ~1922 |
| Robert Mcdonald | Son | — | 7 | ~1923 |
| Paul Mcdonald | Son | — | 11 | ~1919 |
| Bernard Mcdonald | Son | — | 13 | ~1917 |
| Charles Mcdonald | Son | — | 1 | ~1929 |
| Gregory Mcdonald | Son | — | 3 | ~1927 |
| Mary Mcdonald | Spouse | — | 37 | ~1893 |
Census Appearances
1930
Clinton, Iowa
Son, age 7
Clinton, Iowa · implied b. ~1923 — 10 household members
| Surname | McDonald |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Clinton-County, Iowa
Son, age 17
Clinton-County, Iowa · implied b. ~1923 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDonnell |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Clinton City |
| 1935 Residence (County) | Clinton |
| Occupation | Clerk |
| Industry | Retail Grocery |
| Class of Worker | PW |
| Hours Worked | 50 |
| Income (1939) | 220 |
| Highest Grade | H 1 |
| 1935 Residence | Same place |
| 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 Robert Mcdonald across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Mcdonald
Son · 1930 · age 7 · b. ~1923 · Iowa
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Sibling
Bernard Mcdonald
Sibling · 1930 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gerald Mcdonald
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Mcdonald
Sibling · 1930 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rita Mcdonald
Sibling · 1930 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Natalie Mcdonald
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gregory Mcdonald
Sibling · 1930 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paul Mcdonald
Sibling · 1930 · age 11
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 — Clinton, Iowa
Open full size
1930 US Federal Census — Clinton, Iowa
Page Contents
50 people indexed on this census page (ia:1930:iowacensus00reel649:1141)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Conrad Kruse | 69 | Head | Farmer | Holstein |
| 52 | George Kruse | 57 | Head | Laborer | Germany |
| 53 | Esther Kruse | 56 | Wife | — | Nebraska |
| 54 | Wayne Miller | 16 | Step-son | Laborer | Nebraska |
| 55 | Rhoda Burroughs | 45 | Sister-in-law | Deputy Clerk | Nebraska |
| 56 | Margaret Agnew | 61 | Head | — | Iowa |
| 57 | Alfred Gade | 40 | Head | Proprietor | Iowa |
| 58 | Anna Gade | 34 | Wife | — | Iowa |
| 59 | Alfred Jr. Gade | 13 | Son | — | Iowa |
| 60 | Alfred W. Britt | 34 | Head | Collector | Maine |
| 61 | Mae Britt | 27 | Wife | — | Minnesota |
| 62 | Dorothy Britt | 8 | Daughter | — | Illinois |
| 63 | Joseph Gunder | 59 | Head | Laborer | Wisconsin |
| 64 | Anna Gunder | 50 | Wife | — | Iowa |
| 65 | Mildred Gunder | 24 | Daughter | Marceller | Iowa |
| 66 | Irene Gunder | 14 | Daughter | — | Iowa |
| 67 | Clarence Gunder | 12 | Son | — | Iowa |
| 68 | Nels A. Gaarde | 70 | Head | Proprietor | Denmark |
| 69 | Lydia Gaarde | 58 | Wife | Housekeeper | Illinois |
| 70 | Edward Mcnamara | 30 | Head | Laborer | Illinois |
| 71 | Elfrieda Mcnamara | 29 | Wife | — | Iowa |
| 72 | Marilyn Mcnamara | 5 | Daughter | — | Iowa |
| 73 | Jean Mcnamara | 3 | Daughter | — | Iowa |
| 74 | Harold G. Prasse | 27 | Head | Mechanical Manager | Iowa |
| 75 | Clara Prasse | 24 | Wife | — | Iowa |
| 76 | Martin Prasse | 6 | Son | — | Iowa |
| 77 | Eugene Prasse | 5 | Son | — | Iowa |
| 78 | Elvira Prasse | 4 | Daughter | — | Iowa |
| 79 | Robert Prasse | 2 | Son | — | Iowa |
| 80 | Helen Prasse | 0 | Daughter | — | Iowa |
| 81 | Martin Hansen | 64 | Head | Janitor | Germany |
| 82 | Louise Hansen | 58 | Wife | — | Iowa |
| 83 | Nicholas Enebak | 84 | Head | — | Germany |
| 84 | Fred Luckritz | 49 | Head | Metal Worker | Iowa |
| 85 | Alvina Luckritz | 46 | Wife | — | Iowa |
| 86 | John Mcdonald | 40 | Head | Proprietor | Iowa |
| 87 | Mary Mcdonald | 37 | Wife | — | Iowa |
| 88 | Bernard Mcdonald | 13 | Son | — | Iowa |
| 89 | Paul Mcdonald | 11 | Son | — | Iowa |
| 90 | Natalie Mcdonald | 10 | Daughter | — | Iowa |
| 91 | Gerald Mcdonald | 8 | Son | — | Iowa |
| 92 | Robert Mcdonald THIS PERSON | 7 | Son | — | Iowa |
| 93 | Rita Mcdonald | 4 | Daughter | — | Iowa |
| 94 | Gregory Mcdonald | 3 | Son | — | Iowa |
| 95 | Charles Mcdonald | 1 | Son | — | Iowa |
| 96 | Ralph Olds | 33 | Head | Mechanic | Illinois |
| 97 | Nellie Olds | 30 | Wife | — | Illinois |
| 98 | Harriet Olds | 10 | Daughter | — | Illinois |
| 99 | Carolyn Olds | 8 | Daughter | — | Illinois |
| 100 | Albert Olds | 5 | Son | — | Illinois |
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)