MM
Mary Montgomery — 1940 US Census Record
Model Tree available1940 United States Federal Census · Clarendon-County, South Carolina
Our Model Tree links this Mary Montgomery across the 1920, 1930 and 1940 US Censuses in Clarendon-County, South Carolina (XGBoost, ~Confirmed), with identified parents James & Martha — first a daughter (b.~1917), then head of a 14-person household.
Age 23
b. ~1917
Female
Daughter
Born: South Carolina
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Clarendon-County, South Carolina |
| Surname | Montgomery |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 23 |
| Marital Status | Married |
| Birthplace | South Carolina |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Clarendon |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 1 |
| 1935 Residence | South Carolina |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
| Township / Ward | St James Township |
| Est. Birth Year | ~1917 |
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.
14 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Carrie James | Daughter | — | 5 | ~1935 |
| Mary Montgomery | Daughter | — | 23 | ~1917 |
| Hattie James | Daughter | — | 20 | ~1920 |
| Nester James | Daughter | — | 10 | ~1930 |
| Benjamin James | Head | — | 49 | ~1891 |
| William Montgomery | Other | — | 1 | ~1939 |
| Lee Montgomery | Other | — | 4 | ~1936 |
| Will Montgomery | Other | — | 2 | ~1938 |
| Luella Montgomery | Other | — | 6 | ~1934 |
| Willie Montgomery | Other | — | 30 | ~1910 |
| Thomas James | Son | — | 12 | ~1928 |
| William James | Son | — | 17 | ~1923 |
| Ben James | Son | — | 8 | ~1932 |
| Annie James | Spouse | — | 50 | ~1890 |
Census Appearances
1920
Clarendon, South …
Daughter, age 5
Clarendon, South Carolina · implied b. ~1915 — 14 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Montgomery |
| Given Name | Mary Alice |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 5 |
| Marital Status | Single |
| Birthplace | South Carolina |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
1930
Clarendon, South …
Daughter, age 13
Clarendon, South Carolina · implied b. ~1917 — 21 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Montgomery |
| Given Name | Mary L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 13 |
| Marital Status | Single |
| Birthplace | South Carolina |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Can Read/Write | Yes |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
1940
Clarendon-County, South …
Daughter, age 23
Clarendon-County, South Carolina · implied b. ~1917 — 14 household members
| Surname | Montgomery |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 23 |
| Marital Status | Married |
| Birthplace | South Carolina |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Clarendon |
| Income (1939) | 0 |
| Highest Grade | No 1 |
| 1935 Residence | South Carolina |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
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 Montgomery across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father James Montgomery (~0.92 confidence) and mother Martha Montgomery (~0.92 confidence) and father Junius Montgomery (~0.92 confidence) and mother Chester Belser (~0.92 confidence) and mother Annie James (~0.92 confidence) and father Benjamin James (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Montgomery
b. ~1876
Source father
● Household
· direct · ~0.92
Mother
Martha Montgomery
b. ~1880
Source mother
● Household
· direct · ~0.92
Father
Junius Montgomery
b. ~1882
Source father
● Household
· direct · ~0.92
Mother
Chester Belser
b. ~1884
Source mother
● Household
· direct · ~0.92
Mother
Annie James
b. ~1890
Source mother
● Household
· direct · ~0.92
Father
Benjamin James
b. ~1891
Source father
● Household
· direct · ~0.92
This person
Anchor record
Mary Montgomery
Daughter · 1940 · age 23 · b. ~1917 · South Carolina
★ You are viewing this record
Sibling
Ben James
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William James
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Hattie James
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Nester James
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Carrie James
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas James
Sibling · 1940 · age 12
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 — Clarendon-County, South Carolina
Open full size
1940 US Federal Census — Clarendon-County, South Carolina
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03800-00625)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Hester Blanding | 55 | Lodger | — | South Carolina |
| 42 | David O Branson | 63 | Head | Farmer | South Carolina |
| 43 | Esther C Branson | 56 | Wife | — | South Carolina |
| 44 | Clyde Branson | 17 | Son | — | South Carolina |
| 45 | Robt L Branson | 39 | Head | Painter | South Carolina |
| 46 | Ruby B Branson | 22 | Wife | — | South Carolina |
| 47 | Robert E Branson | 4 | Son | — | South Carolina |
| 48 | Doris M Branson | 2 | Daughter | — | South Carolina |
| 49 | Elliott Dow | 37 | Head | Farm Laborer | South Carolina |
| 50 | Mamie Dow | 27 | Wife | — | South Carolina |
| 51 | May E Dow | 12 | Daughter | — | South Carolina |
| 52 | Hattie May Dow | 10 | Daughter | — | South Carolina |
| 53 | Kirby Lee Dow | 9 | Son | — | South Carolina |
| 54 | Minnie B Dow | 7 | Daughter | — | South Carolina |
| 55 | Blanche Dow | 6 | Daughter | — | South Carolina |
| 56 | Gertrude Dow | 5 | Daughter | — | South Carolina |
| 57 | Elliott Jr Dow | 3 | Son | — | South Carolina |
| 58 | Joe N Dow | 1 | Son | — | South Carolina |
| 59 | Damon Oliver | 35 | Head | Farm Laborer | South Carolina |
| 60 | Juliana Oliver | 30 | Wife | — | South Carolina |
| 61 | Susanna Oliver | 20 | Daughter | Farm Laborer | South Carolina |
| 62 | Robertha Oliver | 10 | Sister | — | South Carolina |
| 63 | Elijah Oliver | 5 | Brother | — | South Carolina |
| 64 | Harriet Oliver | 55 | Mother | — | South Carolina |
| 65 | Benjamin James | 49 | Head | Farm Laborer | South Carolina |
| 66 | Annie James | 50 | Wife | — | South Carolina |
| 67 | Hattie James | 20 | Daughter | Farm Labor | South Carolina |
| 68 | William James | 17 | Son | Farm Labor | South Carolina |
| 69 | Thomas James | 12 | Son | — | South Carolina |
| 70 | Nester James | 10 | Daughter | — | South Carolina |
| 71 | Ben Jr. James | 8 | Son | — | South Carolina |
| 72 | Carrie May James | 5 | Daughter | — | South Carolina |
| 73 | Willie Montgomery | 30 | Son-in-law | Truck Driver | South Carolina |
| 74 | Mary Montgomery THIS PERSON | 23 | Daughter | — | South Carolina |
| 75 | Will Jr Montgomery | 2 | Grandson | — | South Carolina |
| 76 | Luella Montgomery | 6 | Grand daughter | — | South Carolina |
| 77 | Lee E Montgomery | 4 | Grand son | — | South Carolina |
| 78 | William D Montgomery | 1 | Grand son | — | South Carolina |
| 79 | Walter Nance | 27 | Head | Press Hand | South Carolina |
| 80 | Gracie Nance | 23 | Wife | — | South Carolina |
Pedigree Summary
Mary + 6 siblings
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)