JM
John Mason — 1930 US Census Record
Model Tree available1930 United States Federal Census · Montgomery, Maryland
Our Model Tree links this John Mason across the 1910, 1920 and 1930 US Censuses in Montgomery, Maryland (XGBoost, ~Confirmed), with identified parents Rachel & James — first a son (b.~1906), then head of a 7-person household.
Age 24
b. ~1906
Male
Son
Born: Maryland
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Montgomery, Maryland |
| Surname | Mason |
| Given Name | John H |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Additional Details | |
| Occupation | Stone Mason |
| Industry | Buildings |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Stonemason |
| Township / Ward | Olney District |
| Est. Birth Year | ~1906 |
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.
7 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Matilda Mason | Daughter | — | 11 | ~1919 |
| Annie Mason | Daughter | — | 18 | ~1912 |
| James Mason | Head | — | 54 | ~1876 |
| Rachel Mason | Other | — | 56 | ~1874 |
| Guy Hallman | Other | — | 24 | ~1906 |
| John Mason | Son | — | 24 | ~1906 |
| James Mason | Son | — | 20 | ~1910 |
Census Appearances
1910
Montgomery, Maryland
Son, age 4
Montgomery, Maryland · implied b. ~1906 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mason |
| Given Name | John H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1920
Montgomery, Maryland
Son, age 14
Montgomery, Maryland · implied b. ~1906 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mason |
| Given Name | John H G |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Montgomery, Maryland
Son, age 24
Montgomery, Maryland · implied b. ~1906 — 7 household members
| Surname | Mason |
| Given Name | John H |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Stone Mason |
| Industry | Buildings |
| Class of Worker | W |
| Can Read/Write | Yes |
| 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 Mason across 3 US Census years (1910, 1920 and 1930) in Montgomery, Maryland, using XGBoost record linkage. Identified parents: mother Rachel Mason (~0.92 confidence) and father James Mason (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Rachel Mason
b. ~1874
Source mother
● Household
· direct · ~0.92
Father
James Mason
b. ~1876
Source father
● Household
· direct · ~0.92
This person
Anchor record
John Mason
Son · 1930 · age 24 · b. ~1906 · Maryland
★ You are viewing this record
Sibling
Matilda Mason
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Annie Mason
Sibling · 1930 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Mason
Sibling · 1930 · age 20
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:0699)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Francis M Brown | 21 | Head | Laborer | Maryland |
| 2 | Della M Brown | 16 | Wife-H | — | Maryland |
| 3 | Charles H Smithson | 37 | Head | — | Maryland |
| 4 | Ethel Smithson | 36 | Wife-H | Farmer | Maryland |
| 5 | Charles L Smithson | 9 | Son | — | Maryland |
| 6 | John G Smithson | 2 | Son | — | Maryland |
| 7 | Lloyd G Smithson | 40 | Brother | — | Maryland |
| 8 | John H Foreman | 21 | Head | Carpenter | Maryland |
| 9 | Bertha Foreman | 18 | Wife-H | Laborer | Maryland |
| 10 | Melvin Anderson | 33 | Head | — | Maryland |
| 11 | Annie Anderson | 21 | Wife-H | Laborer | Maryland |
| 12 | Mary E Anderson | 1 | Daughter | — | Maryland |
| 13 | Robert J Green | 75 | Head | Poultryman | Maryland |
| 14 | Robert C Green | 28 | Son | Farmer | Maryland |
| 15 | Mary E Watkins | 69 | Sister-H | — | Maryland |
| 16 | Katherine H Neely | 72 | Niece-H | — | Maryland |
| 17 | James B Neely | 36 | Son | Farmer | Maryland |
| 18 | Catherine R Larmore | 63 | Head-H | — | Maryland |
| 19 | Forest J Larmore | 23 | Son | Farmer | Maryland |
| 20 | Joseph C Larmore | 21 | Son | Laborer | Maryland |
| 21 | George N Gibson | 75 | Head | — | Maryland |
| 22 | Sarah Gibson | 78 | Wife-H | — | Maryland |
| 23 | Robert S Moore | 72 | Head | — | Maryland |
| 24 | Atlanta Moore | 61 | Wife-H | — | Maryland |
| 25 | William Brown | 45 | Head | Laborer | Maryland |
| 26 | Bessie M Brown | 43 | Wife-H | Servant | Maryland |
| 27 | William H Brown | 16 | Son | — | Maryland |
| 28 | John H Brown | 15 | Son | Laborer | Maryland |
| 29 | Mary J Brown | 14 | Daughter | — | Maryland |
| 30 | Samuel O Brown | 11 | Son | — | Maryland |
| 31 | Ella M Brown | 10 | Daughter | — | Maryland |
| 32 | James A Brown | 8 | Son | — | Maryland |
| 33 | Dorsey E Brown | 6 | Son | — | Maryland |
| 34 | Dorothy V Brown | 3 | Daughter | — | Maryland |
| 35 | Allen G Brown | 1 | Son | — | Maryland |
| 36 | Laura V Brown | 1 | Daughter | — | Maryland |
| 37 | William J Brown | 52 | Brother | — | Maryland |
| 38 | James W Mason | 54 | Head | Laborer | Maryland |
| 39 | Rachel E Mason | 56 | Wife-H | Laundress | Maryland |
| 40 | John H Mason THIS PERSON | 24 | Son | Stone Mason | Maryland |
| 41 | James S Mason | 20 | Son | Laborer | Maryland |
| 42 | Annie M Mason | 18 | Daughter | Servant | Maryland |
| 43 | Matilda C Mason | 11 | Daughter | — | Maryland |
| 44 | Guy E Hallman | 24 | Boarder | Teacher | Maryland |
| 45 | Marshall N Day | 31 | Head | Laborer | Maryland |
| 46 | Irene A Day | 27 | Wife-H | Servant | Maryland |
| 47 | Alice L Day | 0 | Daughter | — | Maryland |
| 48 | Henry E King | 29 | Head | Huckster | Maryland |
| 49 | Edna M King | 16 | Wife-H | — | Maryland |
| 50 | Henry E Jr King | 0 | Son | — | Maryland |
Related Census Records
Pedigree Summary
John + 3 siblings
Gen 1 · 2 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)