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Isaac Jones — 1930 US Census Record
Model Tree available1930 United States Federal Census · St Marys, Maryland
Our Model Tree links this Isaac Jones across the 1900, 1910, 1920 and 1930 US Censuses in St Marys, Maryland (XGBoost, ~Confirmed), with identified parents Priscilla & Isaac — first a son (b.~1881), then head of a 2-person household.
Age 49
b. ~1881
Male
Son
Born: Maryland
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | St Marys, Maryland |
| Surname | Jones |
| Given Name | Isaac |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 49 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Additional Details | |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Laborer |
| Township / Ward | Election District 1 St Inigoes Part |
| Est. Birth Year | ~1881 |
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.
2 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Isaac | Age | Birth yr |
|---|---|---|---|---|
| Martha Jones | Head | — | 78 | ~1852 |
| Isaac Jones | Son | — | 49 | ~1881 |
Census Appearances
1900
Montgomery, Maryland
Son, age 20
Montgomery, Maryland · implied b. ~1880 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jones |
| Given Name | Isaac |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Maryland |
| Birth Month | Oct |
| Birth Year | 1880 |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Maryland |
| Occupation | Farm Laborer |
| Can Read | No |
| Can Write | No |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1910
Montgomery, Maryland
Son, age 29
Montgomery, Maryland · implied b. ~1881 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jones |
| Given Name | Isaac |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Farm Laborer |
| Industry | Working out |
| Can Read | No |
| Can Write | No |
| Speaks English | English |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1920
None, Maryland
Son, age 40
None, Maryland · implied b. ~1880 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jones |
| Given Name | Isaac G |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 40 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Laborer |
| Industry | Construction |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
St Marys, …
Son, age 49
St Marys, Maryland · implied b. ~1881 — 2 household members
| Surname | Jones |
| Given Name | Isaac |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 49 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| 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 4 US Census years (1900, 1910, 1920 and 1930) in 3 locations, using XGBoost record linkage. Identified parents: mother Priscilla Jones (~0.92 confidence) and father Isaac Jones (~0.92 confidence) and mother Martha Jones (~0.92 confidence) and mother Elizabeth Jones (~0.92 confidence) and mother Annie Jones (~0.60 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.86
Mother
Priscilla Jones
b. ~1837
Source mother
● Household
· direct · ~0.92
Father
Isaac Jones
b. ~1840
Source father
● Household
· direct · ~0.92
Mother
Martha Jones
b. ~1852
Source mother
● Household
· direct · ~0.92
Mother
Elizabeth Jones
b. ~1855
Source mother
● Household
· direct · ~0.92
Mother
Annie Jones
b. ~1873
Source mother
● Household
· direct · ~0.6
This person
Anchor record
Isaac Jones
Son · 1930 · age 49 · b. ~1881 · Maryland
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — St Marys, Maryland
Open full size
1930 US Federal Census — St Marys, Maryland
Page Contents
50 people indexed on this census page (ia:1930:15thcensus879unit:0025)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Malcolm W Stewart | 54 | Head | Merchant | Canada |
| 52 | Margaret M Stewart | 56 | Wife | — | Ireland |
| 53 | Joseph R Stewart | 19 | Son | Salesman | Maryland |
| 54 | Henry J Chesley | 40 | Head | Laborer | Maryland |
| 55 | Alice R Chesley | 22 | Wife | — | Maryland |
| 56 | Isaac A Chesley | 6 | Son | — | Maryland |
| 57 | Raymond S Chesley | 4 | Son | — | Maryland |
| 58 | Philip N Chesley | 2 | Son | — | Maryland |
| 59 | Thomas E Chesley | 42 | Head | Laborer | Maryland |
| 60 | Henrietta Chesley | 30 | Wife | — | Maryland |
| 61 | Helen D Chesley | 16 | Daughter | — | Maryland |
| 62 | Martha M Gress | 78 | Head | — | Maryland |
| 63 | Robert N Gress | 19 | Grandson | Laborer | Maryland |
| 64 | Josephine Thompson | 36 | Daughter | — | Maryland |
| 65 | George Thompson | 35 | Son-in-law | Waterman | Maryland |
| 66 | Mary F Thompson | 10 | Gr Daughter | — | Maryland |
| 67 | Joseph R Thompson | 9 | Gr Son | — | Maryland |
| 68 | Dorothy M Thompson | 8 | Gr Daughter | — | Maryland |
| 69 | James E Thompson | 5 | Gr Son | — | Maryland |
| 70 | Emmick E Thompson | 3 | Gr Son | — | Maryland |
| 71 | Beatrice J Thompson | 1 | Gr Daughter | — | Maryland |
| 72 | Jeremiah D Green | 54 | Head | Waterman | Maryland |
| 73 | Ophelia Green | 52 | Wife | — | Maryland |
| 74 | Thomas E Green | 22 | Son | Waterman | Maryland |
| 75 | Nora E E Green | 20 | Daughter | Cook | Maryland |
| 76 | Gilbert H Green | 15 | Son | Laborer | Maryland |
| 77 | Sarah S Green | 13 | Daughter | — | Maryland |
| 78 | Martha S Green | 11 | Daughter | — | Maryland |
| 79 | Estelle F Green | 6 | Daughter | — | Maryland |
| 80 | Mary D Ball | 18 | Daughter | — | Maryland |
| 81 | James Besley | 56 | Head | Laborer | Maryland |
| 82 | Mary M Besley | 43 | Wife | — | Maryland |
| 83 | Stanley Besley | 16 | Gr Son | Laborer | Maryland |
| 84 | Mary B Bennett | 57 | Head | — | Maryland |
| 85 | James Milburn | 10 | Orphan | — | Maryland |
| 86 | Frank Chesley | 46 | Brother | Laborer | Maryland |
| 87 | Wilson Spicer | 50 | Head | Laborer | Maryland |
| 88 | Emily Spicer | 45 | Wife | — | Maryland |
| 89 | Idell Spicer | 20 | Daughter | Cook | Maryland |
| 90 | Dorothy Spicer | 19 | Daughter | — | Maryland |
| 91 | James Spicer | 8 | Son | — | Maryland |
| 92 | Frederick Spicer | 3 | Son | — | Maryland |
| 93 | Norma Milburn | 3 | Gr Daughter | — | Maryland |
| 94 | Stephen Armstrong | 71 | Head | Laborer | Maryland |
| 95 | Mary Armstrong | 59 | Wife | — | Maryland |
| 96 | Arthur Hopewell | 2 | Gr Son | — | Maryland |
| 97 | Martha Jones | 78 | Head | Cook | Maryland |
| 98 | Isaac Jones THIS PERSON | 49 | Son | Laborer | Maryland |
| 99 | — | None | — | — | — |
| 100 | — | None | — | — | — |
Pedigree Summary
Isaac
Gen 1 · 5 parents
~0.86
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)