RM
Ralph Martin — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Washington-County, Maryland
Our Model Tree links this Ralph Martin across the 1930 and 1940 US Censuses in Washington-County, Maryland (XGBoost, ~Confirmed) — first a son (b.~1927), then head of a 9-person household.
Age 13
b. ~1927
Male
Son
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Washington-County, Maryland |
| Surname | Martin |
| Given Name | Ralph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Hagerstown |
| 1935 Residence (County) | Washington |
| Additional Details | |
| Highest Grade | No 7 |
| 1935 Residence | Same house |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Hagerstown |
| Est. Birth Year | ~1927 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Ralph | Age | Birth yr |
|---|---|---|---|---|
| Ralph Martin | Son | — | 13 | ~1927 |
| Ruth Martin | Spouse | — | 43 | ~1897 |
| Lorraine Martin | Daughter | — | 11 | ~1929 |
| Carlton Martin | Son | — | 20 | ~1920 |
| Georgianna Martin | Daughter | — | 3 | ~1937 |
| Ragenia Martin | Daughter | — | 15 | ~1925 |
| Helen Martin | Daughter | — | 18 | ~1922 |
| Harry Martin | Head | — | 50 | ~1890 |
| Patricia Martin | Daughter | — | 7 | ~1933 |
Census Appearances
1930
Washington, Maryland
Son, age 3
Washington, Maryland · implied b. ~1927 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Ralph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | West Virginia |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Washington-County, Maryland
Son, age 13
Washington-County, Maryland · implied b. ~1927 — 9 household members
| Surname | Martin |
| Given Name | Ralph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Hagerstown |
| 1935 Residence (County) | Washington |
| Highest Grade | No 7 |
| 1935 Residence | Same house |
| 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 Ralph Martin across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Ralph Martin
Son · 1940 · age 13 · b. ~1927 · Maryland
★ You are viewing this record
Sibling
Carlton Martin
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patricia Martin
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lorraine Martin
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Georgianna Martin
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ragenia Martin
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen 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 — Washington-County, Maryland
Open full size
1940 US Federal Census — Washington-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01561-01047)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Winifred Devore | 22 | Sister-in-law | Secretary | Maryland |
| 2 | Amos M. Vitton | 64 | Head | Laborer | Pennsylvania |
| 3 | John Vitton | 25 | Son | Street Construction | Pennsylvania |
| 4 | Isaac Vitton | 21 | Son | Gas Attendant | Pennsylvania |
| 5 | Margaret M. Vitton | 18 | Daughter-in-law | Book Keeper | Maryland |
| 6 | John J. Avery | 47 | Head | Salesman | Pennsylvania |
| 7 | Eleanor Avery | 42 | Wife | — | Pennsylvania |
| 8 | John, Jr. Avery | 12 | Son | — | Pennsylvania |
| 9 | Nancy Avery | 9 | Daughter | — | Pennsylvania |
| 10 | Charles J. Keedy | 36 | Head | Engine Inspector | Maryland |
| 11 | Ella Keedy | 34 | Wife | — | Maryland |
| 12 | Doris Keedy | 16 | Daughter | Beautician Apprentice | Maryland |
| 13 | Robert Keedy | 14 | Son | — | Maryland |
| 14 | Charles E. Keedy | 12 | Son | — | Maryland |
| 15 | George W. Roach | 59 | Head | — | Virginia |
| 16 | Ella Anne Roach | 52 | Wife | — | Maryland |
| 17 | George W., Jr. Roach | 19 | Son | Service Man | Maryland |
| 18 | Isabelle Swope | 16 | Maid | Maid | Maryland |
| 19 | H. Grant Potterfield | 64 | Head | Pipe Organ Finisher | Maryland |
| 20 | Jessie M. Potterfield | 62 | Wife | — | Maryland |
| 21 | Harry B. Martin | 50 | Head | Fireman | Maryland |
| 22 | Ruth E. Martin | 43 | Wife | — | West Virginia |
| 23 | Carlton Martin | 20 | Son | Laborer | Maryland |
| 24 | Helen Martin | 18 | Daughter | — | Maryland |
| 25 | Ragenia Martin | 15 | Daughter | — | Maryland |
| 26 | Ralph Martin THIS PERSON | 13 | Son | — | Maryland |
| 27 | Lorraine Martin | 11 | Daughter | — | Maryland |
| 28 | Patricia Martin | 7 | Daughter | — | Maryland |
| 29 | Georgianna Martin | 3 | Daughter | — | Maryland |
| 30 | M. Luther Trovinger | 73 | Head | — | Maryland |
| 31 | Mary K. Trovinger | 70 | Wife | — | Pennsylvania |
| 32 | Jacob I. Zuck | 54 | Head | Farmer | Pennsylvania |
| 33 | Ora A. Zuck | 56 | Wife | — | Maryland |
| 34 | Bessie M. Zuck | 30 | Daughter | Office Nurse | Maryland |
| 35 | William M. Cossey | 59 | Head | Salesman | Pennsylvania |
| 36 | Mabel Cossey | 35 | Wife | — | Maryland |
| 37 | William, Jr. Cossey | 11 | Son | — | Maryland |
| 38 | Jacob Jones | 36 | Head | Bus Driver | Virginia |
| 39 | Edna Jones | 28 | Wife | — | Virginia |
| 40 | Barbara Jean Jones | 3 | Daughter | — | 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)