MC
Margaret Carroll — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Howard-County, Maryland
Our Model Tree links this Margaret Carroll across the 1930 and 1940 US Censuses in Howard-County, Maryland (XGBoost, ~Confirmed) — first a daughter (b.~1929), then head of a 15-person household.
Age 11
b. ~1929
Female
Daughter
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Howard-County, Maryland |
| Surname | Carroll |
| Given Name | Margaret R. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Election Dist 1 |
| Additional Details | |
| Highest Grade | No 2 |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Election Dist 1 |
| Est. Birth Year | ~1929 |
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.
15 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Margaret | Age | Birth yr |
|---|---|---|---|---|
| Thelma Carroll | Daughter | — | 2 | ~1938 |
| Margaret Carroll | Daughter | — | 11 | ~1929 |
| Eleanor Carroll | Daughter | — | 6 | ~1934 |
| Phil Carroll | Son | — | 12 | ~1928 |
| Mabel Carroll | Daughter | — | 11 | ~1929 |
| Roger Carroll | Son | — | 14 | ~1926 |
| Rosa Carroll | Spouse | — | 37 | ~1903 |
| Louis Carroll | Head | — | 41 | ~1899 |
| Walter Carroll | Son | — | 16 | ~1924 |
| Courtney Carroll | Son | — | 3 | ~1937 |
| Roshanie Carroll | Daughter | — | 1 | ~1939 |
| Jesse Carroll | Son | — | 7 | ~1933 |
| Sarah Carroll | Daughter | — | 8 | ~1932 |
| Ella Roshan | Daughter | — | 18 | ~1922 |
| Pauline Carroll | Daughter | — | 12 | ~1928 |
Census Appearances
1930
Howard, Maryland
Daughter, age 1
Howard, Maryland · implied b. ~1929 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carroll |
| Given Name | Margaret E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Howard-County, Maryland
Daughter, age 11
Howard-County, Maryland · implied b. ~1929 — 15 household members
| Surname | Carroll |
| Given Name | Margaret R. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Election Dist 1 |
| Highest Grade | No 2 |
| 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 Margaret Carroll across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Margaret Carroll
Daughter · 1940 · age 11 · b. ~1929 · Maryland
★ You are viewing this record
Sibling
Courtney Carroll
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Phil Carroll
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ella Roshan
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Walter Carroll
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mabel Carroll
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Sarah Carroll
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Pauline Carroll
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jesse Carroll
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thelma Carroll
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Roshanie Carroll
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Roger Carroll
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eleanor Carroll
Sibling · 1940 · age 6
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 — Howard-County, Maryland
Open full size
1940 US Federal Census — Howard-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01552-00376)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Jean M. Boyer | 17 | Daughter | S | Ohio |
| 2 | Patricia A. Boyer | 10 | Daughter | S | Washington D.C. |
| 3 | Hubert Lucas | 54 | Head | Farmer | Maryland |
| 4 | Sula May Lucas | 46 | Wife | — | Maryland |
| 5 | Estelle Mae Brown | 21 | Daughter | — | Maryland |
| 6 | Allen M. Brown | 22 | Inlaw | Carpenter | Maryland |
| 7 | Margie E. Beall | 16 | Boarder | 0 | Maryland |
| 8 | Charles B. Beall | 15 | Boarder | 0 | Maryland |
| 9 | Louis W. Carroll | 41 | Head | Laborer | Maryland |
| 10 | Rosa B. Carroll | 37 | Wife | Housekeeper | Maryland |
| 11 | Walter L. Carroll | 16 | Son | Laborer | Maryland |
| 12 | Roger F. Carroll | 14 | Son | Laborer | Maryland |
| 13 | Phil S. Carroll | 12 | Son | — | Maryland |
| 14 | Pauline E. Carroll | 12 | Daughter | — | Maryland |
| 15 | Mabel B. Carroll | 11 | Daughter | — | Maryland |
| 16 | Margaret R. Carroll THIS PERSON | 11 | Daughter | — | Maryland |
| 17 | Sarah Carroll | 8 | Daughter | — | Maryland |
| 18 | Jesse L. Carroll | 7 | Son | — | Maryland |
| 19 | Eleanor Carroll | 6 | Daughter | — | Maryland |
| 20 | Courtney Carroll | 3 | Son | — | Maryland |
| 21 | Thelma Carroll | 2 | Daughter | — | Maryland |
| 22 | Roshanie Carroll | 1 | Daughter | — | Maryland |
| 23 | Ella M. Roshan | 18 | Daughter | — | Maryland |
| 24 | Robert E. Williams | 59 | Head | Laborer | Ohio |
| 25 | Mary E. Williams | 53 | Wife | — | Maryland |
| 26 | Richard Williams | 28 | Son | Laborer | Maryland |
| 27 | Robert Junior Williams | 21 | Son | Laborer | Maryland |
| 28 | John Bell | 35 | Head | Laborer | Maryland |
| 29 | Laura V. Bell | 26 | Wife | — | Maryland |
| 30 | Vernon M. Bell | 11 | Son | — | Maryland |
| 31 | Thomas W. Bell | 9 | Son | — | Maryland |
| 32 | Earl M. Bell | 7 | Son | — | Maryland |
| 33 | Margo Lois Bell | 3 | Daughter | — | Maryland |
| 34 | Chester W. Bell | 1 | Son | — | Maryland |
| 35 | Maceo E. Holland | 47 | Boarder | Laborer | Maryland |
| 36 | George Howard | 19 | Boarder | Laborer | Maryland |
| 37 | William Lucas | 78 | Boarder | — | Virginia |
| 38 | Raymond Gambrell | 54 | Head | Carpenter | Maryland |
| 39 | Evelyn E. Gambrell | 51 | Wife | — | Maryland |
| 40 | John R. Gambrell | 27 | Son | Optical Helper | 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)