JC
John Chase — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Baltimore, Maryland
Our Model Tree links this John Chase across the 1920 and 1930 US Censuses in Baltimore, Maryland (XGBoost, ~Confirmed) — first a head (b.~1890), then head of a 13-person household.
Age 40
b. ~1890
Male
Head
Born: Maryland
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Baltimore, Maryland |
| Surname | Chase |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 21 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Additional Details | |
| Occupation | Janitor |
| Industry | Public Building |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 15 |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Janitor |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1890 |
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 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Annie Chase | Daughter | — | 5 | ~1925 |
| John Chase | Head | — | 40 | ~1890 |
| Ethel Chase | Daughter | — | 3 | ~1927 |
| Herbert Chase | Son | — | 12 | ~1918 |
| John Chase | Son | — | 19 | ~1911 |
| Mamie Chase | Daughter | — | 8 | ~1922 |
| Louise Chase | Daughter | — | ~1930 | |
| Charles Chase | Son | — | 11 | ~1919 |
| Annie Chase | Other | — | 41 | ~1889 |
| Ida Chase | Daughter | — | 21 | ~1909 |
| Randolph Chase | Son | — | 17 | ~1913 |
| William Hall | Other | — | 60 | ~1870 |
| Milton Chase | Son | — | 14 | ~1916 |
Census Appearances
1920
Baltimore, Maryland
Head, age 32
Baltimore, Maryland · implied b. ~1888 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Chase |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Chauffeur |
| Industry | In Garage |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Head, age 40
Baltimore, Maryland · implied b. ~1890 — 13 household members
| Surname | Chase |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 21 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Janitor |
| Industry | Public Building |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 15 |
| 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 John Chase across 2 US Census years (1920 and 1930) in Baltimore, Maryland, using XGBoost record linkage.
Show:
This person
Anchor record
John Chase
Head · 1930 · age 40 · b. ~1890 · Maryland
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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 — Baltimore, Maryland
Open full size
1930 US Federal Census — Baltimore, Maryland
Page Contents
50 people indexed on this census page (ia:1930:15thcensus850unit:0266)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Ernest Atkins | 41 | Head | Laborer | Maryland |
| 52 | Elsie Atkins | 31 | Wife | Maid | Maryland |
| 53 | Dorothy Atkins | 14 | Daughter | — | Maryland |
| 54 | George Waddell | 53 | Head | Porter | Maryland |
| 55 | Emma Waddell | 49 | Wife-H | — | Maryland |
| 56 | Charles Waddell | 23 | Son | Laborer | Maryland |
| 57 | Dora Waddell | 18 | Daughter | — | Maryland |
| 58 | Emma Young | 42 | Head | Servant | Maryland |
| 59 | George Young | 21 | Son | Laborer | Maryland |
| 60 | George Wydell | 28 | Head | Laborer | Maryland |
| 61 | Geraldine Wydell | 27 | Wife-H | — | Maryland |
| 62 | Charles Wydell | 2 | Son | — | Maryland |
| 63 | Richard Wydell | 0 | Son | — | Maryland |
| 64 | George Blake | 53 | Head | Laborer | Maryland |
| 65 | Sarah F. Nicholson | 51 | Head-H | Keeper | Maryland |
| 66 | Mary Nicholson | 29 | Boarder | Housework | Alabama |
| 67 | Nellie Delgasso | 44 | Head-H | Housework | Maryland |
| 68 | Joseph Carlon | 46 | Boarder | Stevedore | Guadeloupe |
| 69 | John Chase THIS PERSON | 40 | Head | Janitor | Maryland |
| 70 | Annie Chase | 41 | Wife-H | — | Maryland |
| 71 | Ida Chase | 21 | Daughter | Laundress | Maryland |
| 72 | John Chase | 19 | Son | Musician | Maryland |
| 73 | Randolph Chase | 17 | Son | Presser | Maryland |
| 74 | Milton Chase | 14 | Son | — | Maryland |
| 75 | Herbert Chase | 12 | Son | — | Maryland |
| 76 | Charles Chase | 11 | Son | — | Maryland |
| 77 | Mamie Chase | 8 | Daughter | — | Maryland |
| 78 | Annie Chase | 5 | Daughter | — | Maryland |
| 79 | Ethel Chase | 3 | Daughter | — | Maryland |
| 80 | Louise Chase | 0 | Daughter | — | Maryland |
| 81 | William Hall | 60 | Boarder | Laborer | Maryland |
| 82 | Herman Mangum | 23 | Head | Truck Driver | Maryland |
| 83 | Mary Mangum | 24 | Wife-H | — | Virginia |
| 84 | Isaac Lawson | 29 | Roomer | Laborer | North Carolina |
| 85 | Emma Lawson | 26 | Roomer | Maid | North Carolina |
| 86 | John Holland | 42 | Head | Laborer | Maryland |
| 87 | Katherine Holland | 25 | Wife-H | — | Maryland |
| 88 | Sadie Holland | 6 | Daughter | — | Maryland |
| 89 | John Holland | 5 | Son | — | Maryland |
| 90 | Charles Holland | 2 | Son | — | Maryland |
| 91 | Joe Baker | 50 | Roomer | Laborer | Maryland |
| 92 | Paul Rose | 40 | Head | Laborer | Portugal |
| 93 | Herman Rose | 7 | Son | — | Maryland |
| 94 | Jacob Strum | 54 | Head | Merchant Retail | Lithuania |
| 95 | Walter Strum | 23 | Son | Salesman | New York |
| 96 | Sallie Strum | 19 | Daughter | Saleslady | New York |
| 97 | Ida Strum | 17 | Son | Clerk-Sales | Maryland |
| 98 | Mollie Strum | 14 | Daughter | — | Maryland |
| 99 | William Elinor | 60 | Head | Harness Maker | Maryland |
| 100 | Susan Elinor | 61 | Wife-H | — | 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)