RN
Robert Nichols — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Caroline-County, Maryland
Our Model Tree links this Robert Nichols across the 1930 and 1940 US Censuses in Caroline-County, Maryland (XGBoost, ~Confirmed) — first a son (b.~1923), then head of a 8-person household.
Age 17
b. ~1923
Male
Son
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Caroline-County, Maryland |
| Surname | Nichols |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Elect Dist 8 |
| 1935 Residence (County) | Caroline |
| Additional Details | |
| Hours Worked | 5 |
| Income (1939) | 0 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Elect Dist 8 |
| Est. Birth Year | ~1923 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Mildred Nichols | Daughter | — | 13 | ~1927 |
| Emerson Nichols | Son | — | 16 | ~1924 |
| Minnie Nichols | Daughter | — | 6 | ~1934 |
| Ruth Nichols | Spouse | — | 39 | ~1901 |
| Dorsey Nichols | Son | — | 9 | ~1931 |
| Robert Nichols | Son | — | 17 | ~1923 |
| Norman Nichols | Head | — | 49 | ~1891 |
| Louise Nichols | Daughter | — | 11 | ~1929 |
Census Appearances
1930
Caroline, Maryland
Son, age 7
Caroline, Maryland · implied b. ~1923 — 48 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nichols |
| Given Name | Robert L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Delaware |
| Mother's Birthplace | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Caroline-County, Maryland
Son, age 17
Caroline-County, Maryland · implied b. ~1923 — 8 household members
| Surname | Nichols |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Elect Dist 8 |
| 1935 Residence (County) | Caroline |
| Hours Worked | 5 |
| Income (1939) | 0 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| 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 Robert Nichols across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Nichols
Son · 1940 · age 17 · b. ~1923 · Maryland
★ You are viewing this record
Sibling
Mildred Nichols
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Emerson Nichols
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Louise Nichols
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Minnie Nichols
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorsey Nichols
Sibling · 1940 · age 9
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 — Caroline-County, Maryland
Open full size
1940 US Federal Census — Caroline-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01543-00784)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Winfield S. Beuch|Bench | 46 | Head | Farmer | Maryland |
| 42 | Gertie F. Beuch|Bench | 30 | Wife | — | New York |
| 43 | Vivian A. Beuch|Bench | 10 | Daughter | — | Maryland |
| 44 | Clifford S. Beuch|Bench | 6 | Son | — | Maryland |
| 45 | Myrtle M. Schulke | 33 | Head | Manager | Maryland |
| 46 | Rachel M. Schulke | 13 | Daughter | — | Maryland |
| 47 | Helen G. Schulke | 12 | Daughter | — | Maryland |
| 48 | Ralph S. Schulke | 11 | Son | — | Maryland |
| 49 | Otto J. Schmidt | 37 | Head | Farmer | Arkansas |
| 50 | Emma A. Schmidt | 42 | Wife | — | Arkansas |
| 51 | Earl W. Schmidt | 40 | Brother | Farmer | Arkansas |
| 52 | John E. Messick | 26 | Head | Farmer | Delaware |
| 53 | Elizabeth J. Messick | 27 | Wife | — | Maryland |
| 54 | Lee E. Messick | 3 | Son | — | Maryland |
| 55 | Howard K. Hubbard | 21 | Head | Farmer | Maryland |
| 56 | Addie S. Hubbard | 19 | Wife | — | Maryland |
| 57 | Josephine J. Hubbard | 2 | Daughter | 57 | Maryland |
| 58 | John Murphy | 45 | Head | Farmer | Maryland |
| 59 | John Dietrich | 40 | Head | Farmer | Maryland |
| 60 | Lillie A. Dietrich | 37 | Wife | — | Maryland |
| 61 | Dorothy B. Dietrich | 14 | Daughter | — | Maryland |
| 62 | Edward J. Dietrich | 10 | Son | — | Maryland |
| 63 | Brantley H. Trice | 45 | Head | Farmer | Delaware |
| 64 | Pauline W. Trice | 23 | Wife | — | Maryland |
| 65 | William G. Trice | 19 | Son | Operator | Maryland |
| 66 | Roland B. Trice | 6 | Son | — | Maryland |
| 67 | Charles E. Mcmahan | 30 | Head | Operator | Maryland |
| 68 | Mary E. Mcmahan | 29 | Wife | — | Maryland |
| 69 | Eleanor J. Mcmahan | 7 | Daughter | — | Maryland |
| 70 | Nancy Lee Mcmahan | 6 | Daughter | — | Maryland |
| 71 | Rebecca Ann Mcmahan | 5 | Daughter | — | Maryland |
| 72 | Norman Nichols | 49 | Head | Farm Laborer | Maryland |
| 73 | Ruth Nichols | 39 | Wife | — | Maryland |
| 74 | Robert Nichols THIS PERSON | 17 | Son | — | Maryland |
| 75 | Emerson Nichols | 16 | Son | — | Maryland |
| 76 | Mildred Nichols | 13 | Daughter | — | Maryland |
| 77 | Louise Nichols | 11 | Daughter | — | Maryland |
| 78 | Dorsey Nichols | 9 | Son | — | Maryland |
| 79 | Minnie Nichols | 6 | Daughter | — | Maryland |
| 80 | Perry E. Collins | 33 | Head | Farmer | 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)