MC
Margaret Carroll — 1940 US Census Record
Model Tree available1940 United States Federal Census · Jefferson-County, Kentucky
Our Model Tree links this Margaret Carroll across the 1920, 1930 and 1940 US Censuses in Jefferson-County, Kentucky (XGBoost, ~Confirmed), with identified parents M & Charles — first a daughter (b.~1917), then head of a 13-person household.
Age 23
b. ~1917
Female
Daughter
Born: Kentucky
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Jefferson-County, Kentucky |
| Surname | Carroll |
| Given Name | Margaret L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | Louisville City |
| 1935 Residence (County) | Jefferson |
| Additional Details | |
| Highest Grade | H-3 |
| 1935 Residence | Same Place |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
| Township / Ward | Louisville City |
| 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.
13 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Margaret | Age | Birth yr |
|---|---|---|---|---|
| Helen Carroll | Spouse | — | 43 | ~1897 |
| John Carroll | Son | — | 21 | ~1919 |
| Nancy Carroll | Daughter | — | 3 | ~1937 |
| Alice Carroll | Daughter | — | 16 | ~1924 |
| Anna Carroll | Daughter | — | 18 | ~1922 |
| Joseph Carroll | Son | — | 20 | ~1920 |
| Margaret Carroll | Daughter | — | 23 | ~1917 |
| Patricia Carroll | Son | — | 2 | ~1938 |
| James Carroll | Son | — | 11 | ~1929 |
| Mary Carroll | Daughter | — | 6 | ~1934 |
| Charles Carroll | Head | — | 42 | ~1898 |
| Charles Carroll | Son | — | 12 | ~1928 |
| Thomas Carroll | Other | — | 2 | ~1938 |
Census Appearances
1920
Jefferson, Kentucky
Daughter, age 3
Jefferson, Kentucky · implied b. ~1917 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carroll |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Kentucky |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1930
Jefferson, Kentucky
Daughter, age 14
Jefferson, Kentucky · implied b. ~1916 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carroll |
| Given Name | Margaret H. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Kentucky |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Can Read/Write | Yes |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1940
Jefferson-County, Kentucky
Daughter, age 23
Jefferson-County, Kentucky · implied b. ~1917 — 13 household members
| Surname | Carroll |
| Given Name | Margaret L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | Louisville City |
| 1935 Residence (County) | Jefferson |
| Highest Grade | H-3 |
| 1935 Residence | Same Place |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
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 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father M Carroll (~0.92 confidence) and father Charles Carroll (~0.92 confidence) and mother Nellie Carroll (~0.92 confidence) and mother Helen Carroll (~0.92 confidence) and father Charles Carroll (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
M Carroll
b. ~1879
Source father
● Household
· direct · ~0.92
Father
Charles Carroll
b. ~1893
Source father
● Household
· direct · ~0.92
Mother
Nellie Carroll
b. ~1896
Source mother
● Household
· direct · ~0.92
Mother
Helen Carroll
b. ~1897
Source mother
● Household
· direct · ~0.92
Father
Charles Carroll
b. ~1898
Source father
● Household
· direct · ~0.92
This person
Anchor record
Margaret Carroll
Daughter · 1940 · age 23 · b. ~1917 · Kentucky
★ You are viewing this record
Sibling
Joseph Carroll
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Carroll
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Carroll
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Carroll
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Carroll
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patricia Carroll
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Nancy Carroll
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anna Carroll
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Carroll
Sibling · 1940 · age 21
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 — Jefferson-County, Kentucky
Open full size
1940 US Federal Census — Jefferson-County, Kentucky
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01374-00085)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Walter F. Brewer | 47 | Head | Laborer | Kentucky |
| 42 | Dennis H. Warren | 62 | Uncle | Carpenter | Kentucky |
| 43 | James E. Welch | 24 | Head | Truck Driver | Kentucky |
| 44 | Lillian H. Welch | 23 | Wife | — | Kentucky |
| 45 | Maria Welch | 5 | Daughter | — | Kentucky |
| 46 | Stella Ann Welch | 2 | Daughter | — | Kentucky |
| 47 | Barbara J. Welch | 0 | Daughter | — | Kentucky |
| 48 | Henry R. Hagan | 24 | Head | Farmer | Kentucky |
| 49 | Mildred E. Hagan | 23 | Wife | — | Kentucky |
| 50 | Harry R. Jr. Hagan | 3 | Son | — | Kentucky |
| 51 | Mary M. Hagan | 1 | Daughter | — | Kentucky |
| 52 | Viola E. Friedley | 21 | Sister-in-law | — | Kentucky |
| 53 | George E. Friedley | 24 | Brother-in-law | Pipe Fitter | Kentucky |
| 54 | Sarah L. Friedley | 0 | Niece | — | Kentucky |
| 55 | Charles J. Carroll | 42 | Head | Sheet Metal Worker | Kentucky |
| 56 | Helen M. Carroll | 43 | Wife | — | Kentucky |
| 57 | Margaret L. Carroll THIS PERSON | 23 | Daughter | — | Kentucky |
| 58 | John W. Carroll | 21 | Son | Laborer | Kentucky |
| 59 | Joseph H. Carroll | 20 | Son | New Worker | Kentucky |
| 60 | Anna Marie Carroll | 18 | Daughter | Machine Operator | Kentucky |
| 61 | Alice C. Carroll | 16 | Daughter | — | Kentucky |
| 62 | Charles R. Carroll | 12 | Son | — | Kentucky |
| 63 | James E. Carroll | 11 | Son | — | Kentucky |
| 64 | Mary H. Carroll | 6 | Daughter | — | Kentucky |
| 65 | Nancy L. Carroll | 3 | Daughter | — | Kentucky |
| 66 | Patricia F. Carroll | 2 | Son | — | Kentucky |
| 67 | Thomas C. Carroll | 2 | Grandson | — | Kentucky |
| 68 | Leroy Singleton | 21 | Head | Laborer | Kentucky |
| 69 | Elsie L. Singleton | 18 | Wife | — | Kentucky |
| 70 | Verna Lee Singleton | 1 | Daughter | — | Kentucky |
| 71 | Carolyn J. Singleton | 0 | Daughter | — | Kentucky |
| 72 | Harvey E. Cullen | 42 | Son-in-law | Elevator Operator | Kentucky |
| 73 | Catherine H. Cullen | 39 | Mother-in-law | Laundress | Kentucky |
| 74 | Charles B. Benton | 54 | Head | Carpenter | Kentucky |
| 75 | John Benton | 65 | Brother | Farmer | Kentucky |
| 76 | Howard L. Beard | 53 | Head | Painter | Kentucky |
| 77 | Mary B. Beard | 39 | Wife | — | Kentucky |
| 78 | Howard L. Jr. Beard | 18 | Son | Painter | Kentucky |
| 79 | Lamar Beard | 16 | Son | Painter | Kentucky |
| 80 | Gilbert Beard | 14 | Son | — | Kentucky |
Pedigree Summary
Margaret + 9 siblings
Gen 1 · 5 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)