MR
Martha Ross — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Wayne-County, Michigan
Our Model Tree links this Martha Ross across the 1930 and 1940 US Censuses in Wayne-County, Michigan (XGBoost, ~Confirmed) — first a spouse (b.~1897), then head of a 7-person household.
Age 43
b. ~1897
Female
Spouse
Born: Michigan
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Wayne-County, Michigan |
| Surname | Ross |
| Given Name | Martha A. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Michigan |
| 1935 Residence (City) | Detroit |
| 1935 Residence (County) | Wayne |
| Additional Details | |
| Hours Worked | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Same house |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Township / Ward | Detroit |
| Est. Birth Year | ~1897 |
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 1940 census.
| Name | Relation to head | Relative to Martha | Age | Birth yr |
|---|---|---|---|---|
| Martha Ross | Spouse | — | 43 | ~1897 |
| Virginia Ross | Daughter | — | 13 | ~1927 |
| Frank Ross | Head | — | 43 | ~1897 |
| Robert Ross | Son | — | 10 | ~1930 |
| Francis Ross | Son | — | 16 | ~1924 |
| Marion Ross | Daughter | — | 14 | ~1926 |
| John Baumgartner | Other | — | 32 | ~1908 |
Census Appearances
1930
Wayne, Michigan
Spouse, age 33
Wayne, Michigan · implied b. ~1897 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Ross |
| Given Name | Martha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Michigan |
| Age at First Marriage | 22 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Can Read/Write | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Wayne-County, Michigan
Spouse, age 43
Wayne-County, Michigan · implied b. ~1897 — 7 household members
| Surname | Ross |
| Given Name | Martha A. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Michigan |
| 1935 Residence (City) | Detroit |
| 1935 Residence (County) | Wayne |
| Hours Worked | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Same house |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
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 Martha Ross across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Martha Ross
Spouse · 1940 · age 43 · b. ~1897 · Michigan
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Wayne-County, Michigan
Open full size
1940 US Federal Census — Wayne-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01883-00878)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Rachel Rundell | 81 | Mother | — | England |
| 42 | Theodore J. Krazak | 41 | Head | Milk Distributor | Michigan |
| 43 | Martha A. Krazak | 41 | Wife | — | Michigan |
| 44 | Theodore Jr. Krazak | 12 | Son | — | Michigan |
| 45 | Donald Krazak | 10 | Son | — | Michigan |
| 46 | Janet Krazak | 6 | Daughter | — | Michigan |
| 47 | Thomas Barry | 71 | Head | Assembler | Michigan |
| 48 | Frances A. Barry | 63 | Wife | — | Michigan |
| 49 | Frances M. Barry | 29 | Daughter | Stenographer | Michigan |
| 50 | Cecil Williams | 31 | Head | Route Foreman | Illinois |
| 51 | Nellie A. Williams | 31 | Wife | — | Illinois |
| 52 | Albert R. Marquardt | 42 | Head | Machine Operator | Michigan |
| 53 | Sophia C. Marquardt | 31 | Wife | — | New Jersey |
| 54 | Alberta R. Marquardt | 9 | Daughter | — | Michigan |
| 55 | Frank Ross | 43 | Head | Sheet Metal Worker | Michigan |
| 56 | Martha A. Ross THIS PERSON | 43 | Wife | — | Michigan |
| 57 | Francis Ross | 16 | Son | — | Michigan |
| 58 | Marion Ross | 14 | Daughter | — | Michigan |
| 59 | Virginia Ross | 13 | Daughter | — | Michigan |
| 60 | Robert Ross | 10 | Son | — | Michigan |
| 61 | John Baumgartner | 32 | Son in law | Blacksmith Helper | Germany |
| 62 | Andrew Eppich | 47 | Head | Auto Cutter & Trimmer | Austria |
| 63 | Elizabeth A. Eppich | 39 | Wife | — | Austria |
| 64 | Robert Eppich | 14 | Son | — | Michigan |
| 65 | Betty Ann Eppich | 8 | Daughter | — | Michigan |
| 66 | John Schwergel | 37 | Son in law | Foreman | Austria |
| 67 | Josephine J. Schwergel | 34 | Daughter | Packer | Michigan |
| 68 | Alice Schwergel | 30 | Wife | Stock Packer | Canada |
| 69 | Richard Eppich | 42 | Head | Welding | Hungary |
| 70 | Sophia A. Eppich | 36 | Wife | — | Hungary |
| 71 | Richard Eppich | 15 | Son | — | Michigan |
| 72 | Lillian Eppich | 11 | Daughter | — | Michigan |
| 73 | James Eppich | 5 | Son | — | Michigan |
| 74 | Alfred Kretchman | 25 | Head | Sheet Metal Layout Man | Michigan |
| 75 | Viola A. Kretchman | 25 | Wife | — | Ohio |
| 76 | Elmer A. Bates | 53 | Head | Plumber | Michigan |
| 77 | Maude Bates | 55 | Wife | — | Canada |
| 78 | Hortense Z. Bates | 16 | Daughter | — | Michigan |
| 79 | John Fluck | 42 | Head | Coach Driver | Kentucky |
| 80 | Grace A. Fluck | 41 | Wife | — | Kentucky |
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)