IJ
Isaac Jones — 1930 US Census Record
Model Tree available1930 United States Federal Census · Baltimore, Maryland
Our Model Tree links this Isaac Jones across the 1920, 1930 and 1940 US Censuses in Baltimore, Maryland (XGBoost, ~Confirmed), with identified parents William & Maggie — first a son (b.~1914), then head of a 8-person household.
Age 16
b. ~1914
Male
Son
Born: Maryland
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Baltimore, Maryland |
| Surname | Jones |
| Given Name | Isaac |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 16 |
| 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 |
| Veteran | No |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Bell Boy |
| Est. Birth Year | ~1914 |
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 1930 census.
| Name | Relation to head | Relative to Isaac | Age | Birth yr |
|---|---|---|---|---|
| Annie Jones | Daughter | — | 25 | ~1905 |
| Margaret Jones | Daughter | — | 8 | ~1922 |
| Ruth Jones | Daughter | — | 13 | ~1917 |
| Florence Jones | Head | — | 35 | ~1895 |
| Benjamin Scott | Other | — | 45 | ~1885 |
| John Fray | Other | — | 40 | ~1890 |
| James Jones | Son | — | 3 | ~1927 |
| Isaac Jones | Son | — | 16 | ~1914 |
Census Appearances
1920
Baltimore, Maryland
Son, age 5
Baltimore, Maryland · implied b. ~1915 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jones |
| Given Name | Isaac L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Son, age 16
Baltimore, Maryland · implied b. ~1914 — 8 household members
| Surname | Jones |
| Given Name | Isaac |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 16 |
| 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 |
| Veteran | No |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Other, age 25
Baltimore-City-County, Maryland · implied b. ~1915 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jones |
| Given Name | Isach |
| Relationship to Head | Lodger |
| Sex | M |
| Color / Race | Black |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore city |
| 1935 Residence (County) | Baltimore City |
| Occupation | Waiter |
| Industry | Private |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 450 |
| 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 Isaac Jones across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father William Jones (~0.92 confidence) and mother Maggie Jones (~0.92 confidence) and mother Florence Jones (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Jones
b. ~1885
Source father
● Household
· direct · ~0.92
Mother
Maggie Jones
b. ~1889
Source mother
● Household
· direct · ~0.92
Mother
Florence Jones
b. ~1895
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Isaac Jones
Son · 1930 · age 16 · b. ~1914 · Maryland
★ You are viewing this record
Sibling
James Jones
Sibling · 1930 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Annie Jones
Sibling · 1930 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Jones
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Jones
Sibling · 1930 · age 13
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 — Baltimore, Maryland
Open full size
1930 US Federal Census — Baltimore, Maryland
Page Contents
50 people indexed on this census page (ia:1930:15thcensus862unit:0514)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Gost Kozanitis | 35 | Head | Proprietor | Greece |
| 52 | Helen Kozanitis | 23 | Wife | — | Maryland |
| 53 | Kate Redmond | 37 | Head | Proprietor | Virginia |
| 54 | Roswell Redmond | 17 | Son | — | Virginia |
| 55 | John Redmond | 15 | Son | — | Virginia |
| 56 | Ollie Bateman | 39 | Boarder | Laborer | Maryland |
| 57 | Thomas Bailey | 33 | Boarder | Laborer | Virginia |
| 58 | Emanuel Stuart | 60 | Head | Plasterer | Maryland |
| 59 | Nancy Stuart | 63 | Wife | — | Maryland |
| 60 | Edward Stuart | 25 | Son | Laborer | Maryland |
| 61 | Minerva Stuart | 25 | Daughter | Laundress | Maryland |
| 62 | Mary Stuart | 20 | Daughter | Laundress | Maryland |
| 63 | William Jackson | 37 | Head | Stevedore | Virginia |
| 64 | Mary Jackson | 34 | Wife | — | Virginia |
| 65 | Robert Jackson | 13 | Son | — | Maryland |
| 66 | Pennie Jackson | 12 | Son | — | Maryland |
| 67 | Arthur Jackson | 10 | Son | — | Maryland |
| 68 | Carroll Jackson | 9 | Son | — | Maryland |
| 69 | Louis Jackson | 7 | Son | — | Maryland |
| 70 | Dorthy Jackson | 2 | Daughter | — | Maryland |
| 71 | Mary L. Jackson | 1 | Daughter | — | Maryland |
| 72 | George Jackson | 31 | Boarder | Laborer | Virginia |
| 73 | Alice Jackson | 28 | Wife | — | Virginia |
| 74 | George Jr. Jackson | 6 | Boarder | — | Virginia |
| 75 | William Gillson | 24 | Boarder | Laborer | Virginia |
| 76 | Goldie Gillson | 21 | Boarder | — | Maryland |
| 77 | Margaret Jackson | 56 | Aunt | — | Virginia |
| 78 | Florence Jones | 35 | Head | Laundress | Maryland |
| 79 | Annie M. Jones | 25 | Daughter | Cook | Maryland |
| 80 | Isaac Jones THIS PERSON | 16 | Son | Bell Boy | Maryland |
| 81 | Ruth Jones | 13 | Daughter | — | Maryland |
| 82 | Margaret Jones | 8 | Daughter | — | Maryland |
| 83 | James Jones | 3 | Son | — | Maryland |
| 84 | Benjamin Scott | 45 | Brother | Laborer | Maryland |
| 85 | John Fray | 40 | Boarder | Laborer | Maryland |
| 86 | William Wood | 30 | Head | Laborer | Virginia |
| 87 | Rosetta H. Wood | 28 | Wife | — | Maryland |
| 88 | Charles Wood | 10 | Son | — | Maryland |
| 89 | Ester Wood | 8 | Daughter | — | Maryland |
| 90 | William Wright | 49 | Boarder | Laborer | Virginia |
| 91 | Madeline Mackie | 29 | Boarder | Laundress | Virginia |
| 92 | John Mullen | 37 | Head | Mechanic | New York |
| 93 | Beula Mullen | 37 | Wife | Proprietor | Virginia |
| 94 | James W. Mullen | 11 | Son | — | Washington D.C. |
| 95 | Calup Mcdaniel | 39 | Head | Laborer | S. Carolina |
| 96 | Elizabeth Mcdaniel | 34 | Wife | — | S. Carolina |
| 97 | Ethel Mcdaniel | 17 | Daughter | Dishwasher | S. Carolina |
| 98 | Willa M. Mcdaniel | 14 | Daughter | — | S. Carolina |
| 99 | Calup Mcdaniel | 8 | Daughter | — | S. Carolina |
| 100 | Lawrence Entzminger | 42 | Boarder | Laborer | S. Carolina |
Pedigree Summary
Isaac + 4 siblings
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
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)