WM
William Martin — 1940 US Census Record
Model Tree available1940 United States Federal Census · Frederick-County, Maryland
Our Model Tree links this William Martin across the 1920, 1930 and 1940 US Censuses in Frederick-County, Maryland (XGBoost, ~Confirmed), with identified parents Tobias & Sarah — first a head (b.~1899), then head of a 4-person household.
Age 41
b. ~1899
Male
Head
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Frederick-County, Maryland |
| Surname | Martin |
| Given Name | William T |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Election District 9 New Market (part of) Monrovia Rd |
| 1935 Residence (County) | Frederick |
| Additional Details | |
| Occupation | Manager |
| Industry | On Farm |
| Class of Worker | PW |
| Hours Worked | 84 |
| Income (1939) | 520 |
| Highest Grade | 7 |
| 1935 Residence | Md |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Manager |
| Township / Ward | Election District 9 New Market Part Of Monrovia Rd |
| Est. Birth Year | ~1899 |
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 William | Age | Birth yr |
|---|---|---|---|---|
| William Martin | Head | — | 41 | ~1899 |
| Alton Martin | Son | — | 13 | ~1927 |
| William Martin | Son | — | 16 | ~1924 |
| Myrtle Martin | Spouse | — | 36 | ~1904 |
Census Appearances
1920
Frederick, Maryland
Son, age 21
Frederick, Maryland · implied b. ~1899 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | William H |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Laborer |
| Industry | at home |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Frederick, Maryland
Head, age 31
Frederick, Maryland · implied b. ~1899 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | William T. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 23 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Labor |
| Industry | Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Frederick-County, Maryland
Head, age 41
Frederick-County, Maryland · implied b. ~1899 — 4 household members
| Surname | Martin |
| Given Name | William T |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Election District 9 New Market (part of) Monrovia Rd |
| 1935 Residence (County) | Frederick |
| Occupation | Manager |
| Industry | On Farm |
| Class of Worker | PW |
| Hours Worked | 84 |
| Income (1939) | 520 |
| Highest Grade | 7 |
| 1935 Residence | Md |
| 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 William Martin across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Tobias Martin (~0.92 confidence) and mother Sarah Martin (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Tobias Martin
b. ~1869
Source father
● Household
· direct · ~0.92
Mother
Sarah Martin
b. ~1872
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Martin
Head · 1940 · age 41 · b. ~1899 · 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 — Frederick-County, Maryland
Open full size
1940 US Federal Census — Frederick-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01549-00074)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Barbara E Flohr | 1 | Daughter | — | Maryland |
| 2 | Charles M Spielman | 43 | Head | Laborer | Maryland |
| 3 | Flora May Spielman | 45 | Wife | — | Maryland |
| 4 | Charles S Spielman | 20 | Son | Labourer | Maryland |
| 5 | Francis M Spielman | 15 | Daughter | — | Maryland |
| 6 | Betty L Spielman | 11 | Daughter | — | Maryland |
| 7 | Glenn O Spielman | 7 | Son | — | Maryland |
| 8 | Maurice E Spielman | 5 | Son | — | Maryland |
| 9 | Bobby A Spielman | 3 | Son | — | Maryland |
| 10 | Jesse A Bussard | 49 | Head | Farmer | Maryland |
| 11 | Ruby E Bussard | 50 | Wife | — | Maryland |
| 12 | Wilson G Bussard | 25 | Son | Labour | Maryland |
| 13 | Charles R Bussard | 15 | Son | — | Maryland |
| 14 | Edgar Spriggs | 54 | Head | Wpa Labourer | Maryland |
| 15 | Mary E Spriggs | 41 | Wife | — | Maryland |
| 16 | Joseph W Spriggs | 18 | Son | Nya Labour | Maryland |
| 17 | Martha W Spriggs | 15 | Daughter | — | Maryland |
| 18 | George M England | 47 | Head | Farmer | Maryland |
| 19 | Violet M England | 39 | Wife | — | Maryland |
| 20 | Mildred G England | 15 | Daughter | — | Maryland |
| 21 | Sylvia L England | 12 | Daughter | — | Maryland |
| 22 | Alice M England | 11 | Daughter | — | Maryland |
| 23 | George M England | 4 | Son | — | Maryland |
| 24 | Charles E England | 2 | Son | — | Maryland |
| 25 | Eleanor England | 1 | Daughter | — | Maryland |
| 26 | Daisy F Smith | 60 | Head | — | Maryland |
| 27 | Daniel B Smith | 24 | Son | Farmer | Maryland |
| 28 | Mary S Smith | 27 | Daughter-in-law | — | Maryland |
| 29 | Daniel B Jr Smith | 2 | G Son | — | Maryland |
| 30 | William T Martin THIS PERSON | 41 | Head | Manager | Maryland |
| 31 | Myrtle Martin | 36 | Wife | — | Maryland |
| 32 | William W Martin | 16 | Son | — | Maryland |
| 33 | Alton M Martin | 13 | Son | — | Maryland |
| 34 | Elizabeth Martin | 34 | Head | — | Maryland |
| 35 | Gloria E Martin | 13 | Daughter | — | Maryland |
| 36 | Velma M Martin | 11 | Daughter | — | Maryland |
| 37 | Joyce D Martin | 11 | Daughter | — | Maryland |
| 38 | Phyllis Ann Martin | 6 | Daughter | — | Maryland |
| 39 | Shirley M Martin | 4 | Daughter | — | Maryland |
| 40 | John C Derr | 51 | Head | Farmer | Maryland |
Pedigree Summary
William
Gen 1 · 2 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)