RC
Robert Curtis — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Montgomery, Maryland
Our Model Tree links this Robert Curtis across the 1930 and 1940 US Censuses in Montgomery, Maryland (XGBoost, ~Confirmed) — first a son (b.~1910), then head of a 11-person household.
Age 20
b. ~1910
Male
Son
Born: Maryland
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Montgomery, Maryland |
| Surname | Curtis |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Additional Details | |
| Occupation | Bell Boy |
| Industry | Hotel |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Bell Boy |
| Township / Ward | Rockville District 4 Part Of |
| Est. Birth Year | ~1910 |
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.
11 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Robert Curtis | Son | — | 20 | ~1910 |
| Virginia Curtis | Daughter | — | 13 | ~1917 |
| Eliza Curtis | Other | — | 50 | ~1880 |
| William Curtis | Son | — | 21 | ~1909 |
| Jacob Curtis | Head | — | 50 | ~1880 |
| Frances Curtis | Daughter | — | 12 | ~1918 |
| Mildred Curtis | Daughter | — | 19 | ~1911 |
| Lillie Curtis | Daughter | — | 15 | ~1915 |
| Edward Curtis | Son | — | 22 | ~1908 |
| Howard Curtis | Daughter | — | 11 | ~1919 |
| Maggie Curtis | Daughter | — | 17 | ~1913 |
Census Appearances
1930
Montgomery, Maryland
Son, age 20
Montgomery, Maryland · implied b. ~1910 — 11 household members
| Surname | Curtis |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Bell Boy |
| Industry | Hotel |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Montgomery-County, Maryland
Head, age 31
Montgomery-County, Maryland · implied b. ~1909
●
Primary link
· ~Confirmed · 1 source
XGBoost
| Surname | Curtis |
| Given Name | Roger |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Election Dist 10 Potomac |
| 1935 Residence (County) | Montgomery |
| Occupation | Laborer |
| Industry | Rd Contractor |
| Class of Worker | PW |
| Hours Worked | 12 |
| Income (1939) | 307 |
| Highest Grade | No 3 |
| 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 Curtis across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Curtis
Son · 1930 · age 20 · b. ~1910 · Maryland
★ You are viewing this record
Sibling
Edward Curtis
Sibling · 1930 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Howard Curtis
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lillie Curtis
Sibling · 1930 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Virginia Curtis
Sibling · 1930 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mildred Curtis
Sibling · 1930 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Maggie Curtis
Sibling · 1930 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frances Curtis
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Curtis
Sibling · 1930 · 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
1930 US Federal Census — Montgomery, Maryland
Open full size
1930 US Federal Census — Montgomery, Maryland
Page Contents
50 people indexed on this census page (ia:1930:15thcensus876unit:0853)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Jacob Curtis | 50 | Head | Farm Laborer | Maryland |
| 2 | Eliza Curtis | 50 | Wife-H | — | Maryland |
| 3 | Edward Curtis | 22 | Son | Cook | Maryland |
| 4 | William Curtis | 21 | Son | Laborer | Maryland |
| 5 | Robert Curtis THIS PERSON | 20 | Son | Bell Boy | Maryland |
| 6 | Mildred Curtis | 19 | Daughter | Laborer | Maryland |
| 7 | Maggie Curtis | 17 | Daughter | Cook | Maryland |
| 8 | Lillie Curtis | 15 | Daughter | — | Maryland |
| 9 | Virginia Curtis | 13 | Daughter | — | Maryland |
| 10 | Frances Curtis | 12 | Daughter | — | Maryland |
| 11 | Howard Curtis | 11 | Daughter | — | Maryland |
| 12 | Dan P. Grunfield | 57 | Head | — | Maryland |
| 13 | Mary N. Grunfield | 60 | Wife-H | Farmer | Maryland |
| 14 | Walter J. Grunfield | 18 | Son | — | Maryland |
| 15 | Raymond E. Grunfield | 20 | Son | Mechanic | Maryland |
| 16 | Levi Dennis | 36 | Head | Farm Laborer | Maryland |
| 17 | Sue Dennis | 36 | Wife-H | Farm Laborer | Maryland |
| 18 | Levi Jr. Dennis | 5 | Son | — | Maryland |
| 19 | Webster T. Amesley | 22 | Boarder | — | Maryland |
| 20 | Vincent Shepherd | 22 | Boarder | Farm Laborer | Maryland |
| 21 | Elfert T. Clagett | 56 | Head | Farm Laborer | Maryland |
| 22 | Lena J. Clagett | 55 | Wife-H | Farmer | Maryland |
| 23 | Lizzie Johnson | 50 | Head-H | — | Maryland |
| 24 | Willie Elizabeth Johnson | 16 | Granddaughter | — | West Virginia |
| 25 | Harold Johnson | 9 | Grandson | — | West Virginia |
| 26 | Louisa S. Door | 65 | Head | — | Maryland |
| 27 | Elizabeth Door | 48 | Wife-H | Farmer | Virginia |
| 28 | Henry A. Door | 10 | Son | — | District of Columbia |
| 29 | David W. Door | 7 | Son | — | District of Columbia |
| 30 | Horace Door | 30 | Son | — | Maryland |
| 31 | Rebecca Cooper | 70 | Head | Laborer | Maryland |
| 32 | Emery Cooper | 23 | Son | — | Maryland |
| 33 | Dorothy C. Cooper | 23 | Daughter-in-law | Laborer | Maryland |
| 34 | Albert Cooper | 35 | Son | — | Maryland |
| 35 | Rose Cooper | 30 | Daughter-in-law | Laborer | Maryland |
| 36 | Samuel Cooper | 30 | Son | Cook | Maryland |
| 37 | James Cooper | 5 | Grandson | — | Maryland |
| 38 | Dorothy Cooper | 1 | Granddaughter | — | Maryland |
| 39 | John Curtis | 30 | Boarder | Farm Laborer | Maryland |
| 40 | Charles Curtis | 28 | Boarder | Farm Laborer | Maryland |
| 41 | Edington Crawford | 31 | Head | Farm Laborer | Maryland |
| 42 | Virginia Crawford | 30 | Wife-H | — | Maryland |
| 43 | Mahie Crawford | 12 | Son | — | Maryland |
| 44 | Cecil Crawford | 10 | Son | — | Maryland |
| 45 | Gladys C. Crawford | 8 | Daughter | — | Maryland |
| 46 | Edna Crawford | 5 | Daughter | — | Maryland |
| 47 | Melvin Crawford | 4 | Son | — | Maryland |
| 48 | Airie V. Crawford | 2 | Daughter | — | Maryland |
| 49 | Bertha Crawford | 0 | Daughter | — | Maryland |
| 50 | Albert Muson | 32 | Head | Truck Driver | Maryland |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)