JC
James Costello — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Frederick, Virginia
Our Model Tree links this James Costello across the 1920, 1930 and 1940 US Censuses in Frederick, Virginia (XGBoost, ~Confirmed) — first a head (b.~1865), then head of a 5-person household.
Age 65
b. ~1865
Male
Head
Born: Virginia
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Frederick, Virginia |
| Surname | Costello |
| Given Name | James R |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 65 |
| Marital Status | Married |
| Birthplace | Virginia |
| Age at First Marriage | 25 |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Virginia |
| Additional Details | |
| Occupation | Laborer |
| Industry | Farming |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
| Occupation | Laborer |
| Township / Ward | Opequon District Part Of |
| Est. Birth Year | ~1865 |
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.
5 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Elva Costello | Other | — | 20 | ~1910 |
| Wilbur Costello | Son | — | 17 | ~1913 |
| Arthur Costello | Son | — | 14 | ~1916 |
| Mary Costello | Other | — | 55 | ~1875 |
| James Costello | Head | — | 65 | ~1865 |
Census Appearances
1920
Frederick, Virginia
Head, age 55
Frederick, Virginia · implied b. ~1865 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Costello |
| Given Name | James R |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | Virginia |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Virginia |
| Occupation | Laborer |
| Industry | Farm Labor |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
1930
Frederick, Virginia
Head, age 65
Frederick, Virginia · implied b. ~1865 — 5 household members
| Surname | Costello |
| Given Name | James R |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 65 |
| Marital Status | Married |
| Birthplace | Virginia |
| Age at First Marriage | 25 |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Virginia |
| Occupation | Laborer |
| Industry | Farming |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
1940
Frederick-County, Virginia
Head, age 75
Frederick-County, Virginia · implied b. ~1865 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Costello |
| Given Name | J. R. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 75 |
| Marital Status | Married |
| Birthplace | Virginia |
| 1935 Residence (City) | Opequon District |
| 1935 Residence (County) | Frederick |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 70 |
| Income (1939) | 0 |
| Highest Grade | H-2 |
| 1935 Residence | Same place |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
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 James Costello across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
James Costello
Head · 1930 · age 65 · b. ~1865 · Virginia
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Frederick, Virginia
Open full size
1930 US Federal Census — Frederick, Virginia
Page Contents
50 people indexed on this census page (ia:1930:15thcensus2444unit:0118)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Stout Raymond V Stout | 0 | Son | None | Virginia |
| 2 | Silas R Kline | 35 | Head | Farmer | Virginia |
| 3 | Annie L Kline | 30 | Wife-H | None | Virginia |
| 4 | Ralph R Kline | 9 | Son | None | Virginia |
| 5 | Ruth S Kline | 2 | Daughter | None | Virginia |
| 6 | Mary M Schenck | 77 | Head | None | Virginia |
| 7 | Katie M Kline | 66 | Head | None | Virginia |
| 8 | Mildred J Kline | 38 | Daughter | None | Virginia |
| 9 | Lelia G Everett | 57 | Boarder | Dressmaker | Maryland |
| 10 | James R Costello THIS PERSON | 65 | Head | Laborer | Virginia |
| 11 | Mary E Costello | 55 | Wife-H | None | Virginia |
| 12 | Wilbur W Costello | 17 | Son | Laborer | Virginia |
| 13 | Arthur H Costello | 14 | Son | None | Virginia |
| 14 | Elva A Costello | 20 | Sister | Seamstress | Virginia |
| 15 | Robert J Costello | 25 | Head | Laborer | Virginia |
| 16 | Rosa G Costello | 27 | Wife-H | None | Virginia |
| 17 | Adeline M Costello | 2 | Daughter | None | Virginia |
| 18 | James W Costello | 1 | Son | None | Virginia |
| 19 | Everett D Kline | 31 | Head | Farmer | Virginia |
| 20 | Mamie E Kline | 27 | Wife-H | None | Virginia |
| 21 | Kathryn E Kline | 8 | Daughter | None | Virginia |
| 22 | Annie M Kline | 6 | Daughter | None | Maryland |
| 23 | Mildred L Kline | 3 | Daughter | None | Virginia |
| 24 | Everett L Kline | 2 | Son | None | Virginia |
| 25 | Allie B Commer | 28 | Head | Laborer | Virginia |
| 26 | John W Commer | 50 | Head | Farmer | Virginia |
| 27 | Rosa H Commer | 45 | Wife-H | None | Virginia |
| 28 | Ethel A Commer | 23 | Daughter | None | Virginia |
| 29 | Lynwood H Commer | 21 | Son | Farmer | Virginia |
| 30 | Jess W Commer | 18 | Son | Laborer | Virginia |
| 31 | Carrie B Commer | 13 | Daughter | None | Virginia |
| 32 | Virginia F Commer | 81 | Mother | None | Virginia |
| 33 | Pauline F Commer | 12 | Niece | None | Virginia |
| 34 | Virgie F Ludholtz | 37 | Niece | None | Virginia |
| 35 | Charley E Ludholtz | 2 | Son | None | Virginia |
| 36 | Harold E Ludholtz | 1 | Son | None | Virginia |
| 37 | Francis E Kline | 64 | Head | Farmer | Virginia |
| 38 | Mamie E Kline | 54 | Wife-H | None | Virginia |
| 39 | Claude B Stickley | 41 | Head | Farmer | Virginia |
| 40 | Pearl H Stickley | 37 | Wife-H | Teacher | Virginia |
| 41 | Howard Turner | 56 | Head | Farmer | Virginia |
| 42 | Dorthy Turner | 52 | Wife-H | None | Virginia |
| 43 | Mary Swann | 8 | Boarder | None | Maryland |
| 44 | Stewart P Carbaugh | 52 | Head | Farmer | Virginia |
| 45 | Jessie E Carbaugh | 39 | Wife-H | None | Virginia |
| 46 | Clarence S Carbaugh | 16 | Son | None | Virginia |
| 47 | John S Carbaugh | 13 | Son | None | Virginia |
| 48 | Claude E Carbaugh | 11 | Son | None | Virginia |
| 49 | Robert E Carbaugh | 8 | Son | None | Virginia |
| 50 | William T Massie | 65 | Head | Proprietor | Virginia |
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)