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Mary Martin — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this Mary Martin across the 1920, 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed) — first a head (b.~1889), then head of a 6-person household.
Age 51
b. ~1889
Female
Head
Born: Maryland
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Martin |
| Given Name | Mary H. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 51 |
| Marital Status | Widowed |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Additional Details | |
| Highest Grade | Hs 4 |
| 1935 Residence | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1889 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Helen Martin | Daughter | — | 16 | ~1924 |
| Mary Martin | Head | — | 51 | ~1889 |
| Ernest Martin | Son | — | 18 | ~1922 |
| William Martin | Son | — | 14 | ~1926 |
| Charles Martin | Son | — | 20 | ~1920 |
| James Martin | Son | — | 27 | ~1913 |
Census Appearances
1920
Baltimore, Maryland
Spouse, age 32
Baltimore, Maryland · implied b. ~1888 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Mary A. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Spouse, age 41
Baltimore, Maryland · implied b. ~1889 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Mary E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 19 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Head, age 51
Baltimore-City-County, Maryland · implied b. ~1889 — 6 household members
| Surname | Martin |
| Given Name | Mary H. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 51 |
| Marital Status | Widowed |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Highest Grade | Hs 4 |
| 1935 Residence | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
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 Mary Martin across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Martin
Head · 1940 · age 51 · b. ~1889 · Maryland
★ 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 — Baltimore-City-County, Maryland
Open full size
1940 US Federal Census — Baltimore-City-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01533-00565)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Dorothy V. Young | 12 | daughter | — | Maryland |
| 42 | Clarence L. Young | 11 | son | — | Maryland |
| 43 | Catherine M. Young | 8 | daughter | — | Maryland |
| 44 | Mary K. Young | 5 | daughter | — | Maryland |
| 45 | John R. Young | 4 | son | — | Maryland |
| 46 | Irene A. Young | 1 | son | — | Maryland |
| 47 | Margaret S. O'Laughlin | 70 | Head | — | Maryland |
| 48 | Francis L. O'Laughlin | 38 | Son | Welder | Maryland |
| 49 | Martha E. Covell | 51 | Head | Housekeeper | Maryland |
| 50 | Charles W. Mitchell | 56 | Lodger | Painter | Maryland |
| 51 | Fanny J. Howard | 41 | Head | — | West Virginia |
| 52 | Melvin P. Howard | 19 | Son | Laborer | Maryland |
| 53 | Margaret Howard | 20 | daughter-in-law | — | Maryland |
| 54 | Margaret J. Howard | 0 | granddaughter | — | Maryland |
| 55 | Charles F. Howard | 17 | Son | Laborer | Maryland |
| 56 | Vincent Gumakos | 50 | Head | Bartender | Lithuania |
| 57 | Marie Gumakos | 40 | Wife | — | Maryland |
| 58 | Anton Mikuzanskas | 48 | Lodger | Tailor | Lithuania |
| 59 | Mary H. Martin THIS PERSON | 51 | Head | — | Maryland |
| 60 | James C. Martin | 27 | son | Clerk | Maryland |
| 61 | Charles Martin | 20 | son | Salesman | Maryland |
| 62 | Ernest G. Martin | 18 | Son | Helper-Truck | Maryland |
| 63 | Helen G. Martin | 16 | Daughter | — | Maryland |
| 64 | William J. Martin | 14 | Son | — | Maryland |
| 65 | Emma C. Nomm | 45 | Head | — | Maryland |
| 66 | Lillian M. Nomm | 28 | daughter | — | Maryland |
| 67 | Selma E. Nomm | 16 | daughter | — | Maryland |
| 68 | Deloris Nomm | 10 | daughter | — | Maryland |
| 69 | Edward E. Heine | 42 | Head | — | Virginia |
| 70 | Florence B. Heine | 64 | Wife | — | Maryland |
| 71 | Anna V. Welator | 37 | Daughter | Sewing Machine Operator | Maryland |
| 72 | Adele G. Welator | 20 | Daughter | New Worker | Maryland |
| 73 | Donald R. Welator | 15 | Grandson | — | Maryland |
| 74 | Frank Barton | 54 | nephew | Steam Fitter | Ohio |
| 75 | Harvey Lane Hart | 70 | Head | Huckster | Maryland |
| 76 | Charles P. Miller | 31 | Son in law | Stevedore | Maryland |
| 77 | Helen E. Miller | 30 | Daughter | — | Maryland |
| 78 | Charles H. Miller | 7 | Grandson | — | Maryland |
| 79 | Thelma E. Miller | 5 | Granddaughter | — | Maryland |
| 80 | Roland K. Miller | 3 | Grandson | — | Maryland |
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)