MJ
Mary James — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Baltimore, Maryland
Our Model Tree links this Mary James across the 1900, 1910, 1920, 1930 and 1940 US Censuses in Baltimore, Maryland (XGBoost, ~Confirmed) — first a spouse (b.~1870), then head of a 6-person household.
Age 60
b. ~1870
Female
Spouse
Born: Maryland
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Baltimore, Maryland |
| Surname | James |
| Given Name | Mary E |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 60 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 20 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Est. Birth Year | ~1870 |
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.
6 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Jolly | Daughter | — | 2 | ~1928 |
| Dorothy Jolly | Daughter | — | 10 | ~1920 |
| Irvin James | Head | — | 70 | ~1860 |
| Peter Jolly | Other | — | 60 | ~1870 |
| Emma Jolly | Other | — | 42 | ~1888 |
| Mary James | Spouse | — | 60 | ~1870 |
Census Appearances
1900
Baltimore, Maryland
Other, age 30
Baltimore, Maryland · implied b. ~1870 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jones |
| Given Name | Mary |
| Relationship to Head | Lodger |
| Sex | F |
| Color / Race | Black |
| Age | 30 |
| Marital Status | Widowed |
| Birthplace | Maryland |
| Birth Month | Mar |
| Birth Year | 1870 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Servant |
| Can Read | No |
| Can Write | No |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1910
Baltimore, Maryland
Spouse, age 39
Baltimore, Maryland · implied b. ~1871 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jones |
| Given Name | Mollie |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Maryland |
| Years Married | 6 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | none |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1920
Baltimore, Maryland
Spouse, age 50
Baltimore, Maryland · implied b. ~1870 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jones |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Laundress |
| Industry | Private Family |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Spouse, age 60
Baltimore, Maryland · implied b. ~1870 — 6 household members
| Surname | James |
| Given Name | Mary E |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 60 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 20 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Head, age 70
Baltimore-City-County, Maryland · implied b. ~1870
●
Primary link
· ~Confirmed · 1 source
XGBoost
| Surname | Jones |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | Black |
| Age | 70 |
| Marital Status | Widowed |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Occupation | Domestic |
| Industry | Housework |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 240 |
| Highest Grade | No 1 |
| 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 Mary James across 5 US Census years (1900, 1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary James
Spouse · 1930 · age 60 · b. ~1870 · 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 — Baltimore, Maryland
Open full size
1930 US Federal Census — Baltimore, Maryland
Page Contents
50 people indexed on this census page (ia:1930:15thcensus862unit:0110)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Alexander W Tyler | 44 | Head | Butler | Maryland |
| 2 | Ida B Tyler | 39 | Wife | Cook | Maryland |
| 3 | Lillian B Tyler | 23 | Daughter | — | Maryland |
| 4 | Robert E Tyler | 25 | Son-in-law | Laborer | Maryland |
| 5 | Ida J Tyler | 5 | Daughter | — | Maryland |
| 6 | Annie Edwards | 47 | Head | House Worker | Virginia |
| 7 | Henry Smith | 30 | Lodger | Waiter | Maryland |
| 8 | William J Bowen | 30 | Head | Laborer | Maryland |
| 9 | George Dorsey | 34 | Head | Laborer | Maryland |
| 10 | Lucy Dorsey | 36 | Wife | Laundress | Maryland |
| 11 | Evelyn Dorsey | 10 | Daughter | — | Maryland |
| 12 | Bessie Dorsey | 8 | Daughter | — | Maryland |
| 13 | Lucille Dorsey | 2 | Daughter | — | Maryland |
| 14 | Andrew Minnis | 34 | Lodger | Laborer | Virginia |
| 15 | Sallie Minnis | 32 | Lodger | — | Virginia |
| 16 | Edwin Minnis | 8 | Lodger | — | Maryland |
| 17 | Laura Minnis | 6 | Lodger | — | Maryland |
| 18 | Alethea Minnis | 2 | Lodger | — | Maryland |
| 19 | Ella Luckery | 35 | Head | Cook | Maryland |
| 20 | Josephine Hamilton | 44 | Lodger | — | Maryland |
| 21 | William Smith | 55 | Lodger | Laborer | Maryland |
| 22 | Alfred Coleman | 32 | Head | Porter | Virginia |
| 23 | Lillian Coleman | 28 | Wife | — | Maryland |
| 24 | Lester Wilson | 25 | Lodger | Laborer | Maryland |
| 25 | Hazel Wilson | 25 | Lodger | — | Maryland |
| 26 | Anthony Young | 27 | Lodger | Porter | Maryland |
| 27 | Mildred Young | 26 | Lodger | Cook | Maryland |
| 28 | Dora Stokes | 35 | Head | House Worker | Maryland |
| 29 | Caroline Powell | 55 | Mother | — | Maryland |
| 30 | Arthur Jones | 35 | Lodger | Laborer | Maryland |
| 31 | Gertrude Mitchell | 38 | Lodger | Presser | Maryland |
| 32 | Anna Stokes | 15 | Daughter | — | Maryland |
| 33 | Henry Harrington | 27 | Head | Laborer | North Carolina |
| 34 | Bertha Harrington | 27 | Wife | — | Virginia |
| 35 | Nettie Banks | 27 | Lodger | House Worker | Virginia |
| 36 | Christ Banks | 24 | Lodger | Laborer | Virginia |
| 37 | Robert Parham | 38 | Head | Laborer | Virginia |
| 38 | Eva M Parham | 32 | Wife | House Worker | Virginia |
| 39 | Robert Hardy | 35 | Lodger | Laborer | Virginia |
| 40 | Aurelia Hardy | 25 | Lodger | Servant | Maryland |
| 41 | Helen L Parham | 13 | Daughter | — | Virginia |
| 42 | Irvin James | 70 | Head | Porter | Maryland |
| 43 | Mary E James THIS PERSON | 60 | Wife | — | Maryland |
| 44 | Peter Jolly | 60 | Lodger | Driver | Maryland |
| 45 | Emma Jolly | 42 | Lodger | House Worker | Maryland |
| 46 | Dorothy Jolly | 10 | Daughter | — | Maryland |
| 47 | Mary E Jolly | 2 | Daughter | — | Maryland |
| 48 | Calloway Adams | 36 | Head | Bellman | Maryland |
| 49 | Lucy G Adams | 36 | Wife | — | Maryland |
| 50 | Windle Tinsley | 18 | Step-son | Chauffeur | 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)