SM
Samuel Martin — 1940 US Census Record
Model Tree available1940 United States Federal Census · Boulder-County, Colorado
Our Model Tree links this Samuel Martin across the 1920, 1930 and 1940 US Censuses in Boulder-County, Colorado (XGBoost, ~Confirmed), with identified parents Ira & Samuel — first a son (b.~1916), then head of a 4-person household.
Age 24
b. ~1916
Male
Son
Born: Colorado
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Boulder-County, Colorado |
| Surname | Martin |
| Given Name | Samuel Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | South Boulder Precinct 36 |
| 1935 Residence (County) | Boulder |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | E |
| Hours Worked | 70 |
| Income (1939) | 480 |
| Highest Grade | H 4 |
| 1935 Residence | Same house |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Occupation | Farmer |
| Township / Ward | South Boulder Precinct 36 |
| Est. Birth Year | ~1916 |
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 Samuel | Age | Birth yr |
|---|---|---|---|---|
| Joseph Martin | Son | — | 18 | ~1922 |
| Eloie Martin | Spouse | — | 48 | ~1892 |
| Samuel Martin | Head | — | 66 | ~1874 |
| Samuel Martin | Son | — | 24 | ~1916 |
Census Appearances
1920
Boulder, Colorado
Son, age 5
Boulder, Colorado · implied b. ~1915 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Samuel |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Colorado |
| Mother's Birthplace | Arkansas |
| Occupation | none |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1930
Boulder, Colorado
Son, age 14
Boulder, Colorado · implied b. ~1916 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Samuel Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Colorado |
| Mother's Birthplace | Arkansas |
| Can Read/Write | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1940
Boulder-County, Colorado
Son, age 24
Boulder-County, Colorado · implied b. ~1916 — 4 household members
| Surname | Martin |
| Given Name | Samuel Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | South Boulder Precinct 36 |
| 1935 Residence (County) | Boulder |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | E |
| Hours Worked | 70 |
| Income (1939) | 480 |
| Highest Grade | H 4 |
| 1935 Residence | Same house |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
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 Samuel Martin across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Ira Martin (~0.92 confidence) and father Samuel Martin (~0.92 confidence) and father Samuel Martin (~0.92 confidence) and mother Annie Martin (~0.92 confidence) and mother Effie Martin (~0.92 confidence) and mother Eloie Martin (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Ira Martin
b. ~1858
Source father
● Household
· direct · ~0.92
Father
Samuel Martin
b. ~1874
Source father
● Household
· direct · ~0.92
Father
Samuel Martin
b. ~1874
Source father
● Household
· direct · ~0.92
Mother
Annie Martin
b. ~1863
Source mother
● Household
· direct · ~0.92
Mother
Effie Martin
b. ~1893
Source mother
● Household
· direct · ~0.92
Mother
Eloie Martin
b. ~1892
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Samuel Martin
Son · 1940 · age 24 · b. ~1916 · Colorado
★ You are viewing this record
Sibling
Joseph Martin
Sibling · 1940 · age 18
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 — Boulder-County, Colorado
Open full size
1940 US Federal Census — Boulder-County, Colorado
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00457-00473)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Richard Githens | 9 | Son | — | Colorado |
| 2 | Jennie R. Githens | 46 | Head | Farmer | Indiana |
| 3 | Alice Janet Githens | 13 | Son | — | Colorado |
| 4 | Samuel W. Martin | 66 | Head | Substation Operator | Colorado |
| 5 | Eloie Martin | 48 | Wife | — | Arkansas |
| 6 | Samuel Jr. Martin THIS PERSON | 24 | Son | Farmer | Colorado |
| 7 | Joseph H. Martin | 18 | Son | — | Colorado |
| 8 | Ida S. Martin | 84 | Head | — | Indiana |
| 9 | Ella J. Martin | 49 | Daughter | — | Colorado |
| 10 | John S. Mills | 77 | Head | Supt. | Ohio |
| 11 | Laura B. Mills | 67 | Wife | — | Illinois |
| 12 | Claude D. Bonham | 39 | Head | Medical Doctor | Missouri |
| 13 | Cecil B. Bonham | 40 | Wife | — | Missouri |
| 14 | Robert D. Bonham | 9 | Son | — | Colorado |
| 15 | Ruby Ragland | 22 | Maid | Maid | Oklahoma |
| 16 | Oscar M. Gilbert | 67 | Head | — | Missouri |
| 17 | Agnes K. Gilbert | 67 | Wife | — | Missouri |
| 18 | Jacob Van Ek | 43 | Head | Professor | Iowa |
| 19 | Eve P. Van Ek | 38 | Wife | Artist | Iowa |
| 20 | Frederick O. Repplier | 43 | Head | — | New York |
| 21 | Margaret Repplier | 39 | Wife | — | Colorado |
| 22 | Helen E. Repplier | 9 | Daughter | — | Colorado |
| 23 | Judith M. Repplier | 1 | Daughter | — | Colorado |
| 24 | Charles Scoggin | 52 | Head | Writer | Mexico |
| 25 | Lois D. Scoggin | 51 | Wife | — | Indiana |
| 26 | Merill R. Kidd | 32 | Head | Salesman | Oklahoma |
| 27 | Dorothy Kidd | 29 | Wife | — | Indiana |
| 28 | W. Richard Kidd | 10 | Son | — | Colorado |
| 29 | Jean Ann Kidd | 8 | Daughter | — | Colorado |
| 30 | Ray H. Light | 45 | Head | Painter | Colorado |
| 31 | Lou Raise Light | 42 | Wife | — | Colorado |
| 32 | W. Farrell Dyde | 50 | Head | Professor | Canada |
| 33 | Marguerite Dyde | 52 | Wife | — | Colorado |
| 34 | James F. Dyde | 20 | Son | — | England |
| 35 | Jane C. Dyde | 18 | Daughter | — | Canada |
| 36 | Paul J. Fischer | 44 | Head | Vice President | Iowa |
| 37 | M. Margaret Fischer | 38 | Wife | — | Nebraska |
| 38 | Marcia Fischer | 14 | Daughter | — | Iowa |
| 39 | Paula Fischer | 11 | Daughter | — | Iowa |
| 40 | Fordyce J. Mccabe | 39 | Head | Medical Doctor | Iowa |
Pedigree Summary
Samuel + 1 sibling
Gen 1 · 6 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)