DM
Donald Martin — 1940 US Census Record
Model Tree available1940 United States Federal Census · Ramsey-County, Minnesota
Our Model Tree links this Donald Martin across the 1920, 1930 and 1940 US Censuses in Ramsey-County, Minnesota (XGBoost, ~Confirmed), with identified parents William & Bertha — first a son (b.~1917), then head of a 4-person household.
Age 23
b. ~1917
Male
Son
Born: Minnesota
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Ramsey-County, Minnesota |
| Surname | Martin |
| Given Name | Donald |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | St. Paul City |
| 1935 Residence (County) | Ramsey |
| Additional Details | |
| Hours Worked | 8 |
| Income (1939) | 125 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Township / Ward | St Paul City |
| Est. Birth Year | ~1917 |
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 1940 census.
| Name | Relation to head | Relative to Donald | Age | Birth yr |
|---|---|---|---|---|
| Richard Martin | Head | — | 49 | ~1891 |
| Richard Martin | Son | — | 20 | ~1920 |
| Donald Martin | Son | — | 23 | ~1917 |
| Bertha Martin | Spouse | — | 49 | ~1891 |
Census Appearances
1920
Hennepin, Minnesota
Son, age 3
Hennepin, Minnesota · implied b. ~1917 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Donald |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Minnesota |
| Mother's Birthplace | Minnesota |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1930
Ramsey, Minnesota
Son, age 13
Ramsey, Minnesota · implied b. ~1917 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Donald R |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Minnesota |
| Mother's Birthplace | Minnesota |
| Can Read/Write | Yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1940
Ramsey-County, Minnesota
Son, age 23
Ramsey-County, Minnesota · implied b. ~1917 — 4 household members
| Surname | Martin |
| Given Name | Donald |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | St. Paul City |
| 1935 Residence (County) | Ramsey |
| Hours Worked | 8 |
| Income (1939) | 125 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
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 Donald Martin across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage. Identified parents: father William Martin (~0.92 confidence) and mother Bertha Martin (~0.92 confidence) and mother Hazel Martin (~0.92 confidence) and father Richard Martin (~0.92 confidence) and father Richard Martin (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Martin
b. ~1886
Source father
● Household
· direct · ~0.92
Mother
Bertha Martin
b. ~1891
Source mother
● Household
· direct · ~0.92
Mother
Hazel Martin
b. ~1891
Source mother
● Household
· direct · ~0.92
Father
Richard Martin
b. ~1891
Source father
● Household
· direct · ~0.92
Father
Richard Martin
b. ~1891
Source father
● Household
· direct · ~0.92
This person
Anchor record
Donald Martin
Son · 1940 · age 23 · b. ~1917 · Minnesota
★ You are viewing this record
Sibling
Richard Martin
Sibling · 1940 · age 20
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
1940 US Federal Census — Ramsey-County, Minnesota
Open full size
1940 US Federal Census — Ramsey-County, Minnesota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02004-00359)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Helen Dickman | 36 | Sister-in-law | — | Minnesota |
| 42 | Frank A. Quinet | 65 | Head | Streetcar Carpenter | Germany |
| 43 | Emma Quinet | 60 | Wife | — | Germany |
| 44 | Emma Rivard | 57 | Head | — | Minnesota |
| 45 | Antoinette Rivard | 24 | Daughter | Clerical Work | Minnesota |
| 46 | Louise Wawra | 67 | Sister | Power Machine | Austria |
| 47 | Charles Douglas | 86 | Head | — | Wisconsin |
| 48 | Julia Douglas | 65 | Wife | Saleslady | Minnesota |
| 49 | George Douglas | 40 | Son | Plumber | Minnesota |
| 50 | Richard Martin | 49 | Head | Machinist | Minnesota |
| 51 | Bertha Martin | 49 | Wife | — | Minnesota |
| 52 | Donald Martin THIS PERSON | 23 | Son | — | Minnesota |
| 53 | Richard Martin | 20 | Son | Office Boy | Minnesota |
| 54 | Arnold Otterness | 32 | Head | Milk Driver | Minnesota |
| 55 | Astrid Otterness | 33 | Wife | — | Norway |
| 56 | Beverly Otterness | 3 | Daughter | — | Minnesota |
| 57 | John Buscher | 57 | Head | Foreman | Austria |
| 58 | Caroline Buscher | 57 | Wife | — | Austria |
| 59 | Elizabeth Wiederholt | 66 | Lodger | — | Minnesota |
| 60 | Abraham Zagarsky | 53 | Head | Furniture | England |
| 61 | Annie Zagarsky | 51 | Wife | — | England |
| 62 | James Brandl | 48 | Head | Meat Market | Minnesota |
| 63 | Esther Brandl | 46 | Wife | — | Minnesota |
| 64 | Audrey Brandl | 20 | Daughter | Secretary | Minnesota |
| 65 | Carol Ann Brandl | 15 | Daughter | — | Minnesota |
| 66 | John W. Hayes | 31 | Head | Asst Arch | Oregon |
| 67 | Frances Hayes | 26 | Wife | — | Minnesota |
| 68 | Thomas J. Hayes | 2 | Son | — | North Dakota |
| 69 | Carl Gaetke | 24 | Head | Frame Maker | Minnesota |
| 70 | Ethel Gaetke | 21 | Wife | Bookkeeper | Minnesota |
| 71 | James Farrell | 53 | Head | Blacksmith | Minnesota |
| 72 | Margaret Farrell | 58 | Wife | Clothes Presser | Minnesota |
| 73 | Gordon Farrell | 20 | Son | — | Minnesota |
| 74 | James Russell | 82 | Father-in-law | — | New York |
| 75 | John Mcguckin | 59 | Lodger | — | Scotland |
| 76 | August Hinrichsen | 65 | Head | Iron Moulder | Germany |
| 77 | Emma Hinrichsen | 63 | Wife | — | Minnesota |
| 78 | Math Amis | 44 | Head | Cigar Clerk | Minnesota |
| 79 | Frieda Amis | 41 | Wife | — | Minnesota |
| 80 | Marian Amis | 12 | Daughter | — | Minnesota |
Pedigree Summary
Donald + 1 sibling
Gen 1 · 5 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 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)