JL
John Larkin — 1930 US Census Record
Model Tree available1930 United States Federal Census · Baltimore, Maryland
Our Model Tree links this John Larkin across the 1920, 1930 and 1940 US Censuses in Baltimore, Maryland (XGBoost, ~Confirmed), with identified parents Mary — first a head (b.~1900), then head of a 8-person household.
Age 30
b. ~1900
Male
Head
Born: Maryland
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Baltimore, Maryland |
| Surname | Larkin |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 14 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Additional Details | |
| Occupation | Clerk |
| Industry | Police Dept. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 12000 |
| Radio Set | R |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Clerk |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1900 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Nancy Larkin | Daughter | — | 8 | ~1922 |
| John Larkin | Head | — | 30 | ~1900 |
| Catherine Friday | Other | — | 26 | ~1904 |
| Alma Larkin | Other | — | 28 | ~1902 |
| Richard Larkin | Son | — | 1 | ~1929 |
| Robert Larkin | Son | — | 4 | ~1926 |
| William Larkin | Son | — | 7 | ~1923 |
| John Larkin | Son | — | 9 | ~1921 |
Census Appearances
1920
Anne Arundel, …
Other, age 20
Anne Arundel, Maryland · implied b. ~1900 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Larkins |
| Given Name | John |
| Relationship to Head | Boarder |
| Sex | M |
| Color / Race | Black |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Driver |
| Industry | Coal Wagon |
| 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
Head, age 30
Baltimore, Maryland · implied b. ~1900 — 8 household members
| Surname | Larkin |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 14 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Clerk |
| Industry | Police Dept. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 12000 |
| Radio Set | R |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Son, age 39
Baltimore-City-County, Maryland · implied b. ~1901 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Larkins |
| Given Name | John R |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore |
| 1935 Residence (County) | Baltimore City |
| Occupation | Clerk |
| Industry | Office |
| Class of Worker | PW |
| Hours Worked | 0 |
| Income (1939) | 200 |
| Highest Grade | H-2 |
| 1935 Residence | Same House |
| 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 Larkin across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage. Identified parents: mother Mary Larkins (~0.92 confidence). The pedigree spans 1 generation with 1 identified ancestor.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Mary Larkins
b. ~1867
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Larkin
Head · 1930 · age 30 · b. ~1900 · 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:1930:15thcensus869unit:0304)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Louis C. Roche | 33 | Head | Manager | Maryland |
| 2 | Ruth Roche | 27 | Wife-H | None | Maryland |
| 3 | Lewis C. Jr. Roche | 4 | Son | None | Maryland |
| 4 | Sydney G. Roche | 3 | Son | None | Maryland |
| 5 | Mary E. Roche | 2 | Daughter | None | Maryland |
| 6 | Julius G. Strite | 54 | Head | Buyer | Maryland |
| 7 | Dorothy E. Strite | 24 | Wife-H | None | New York |
| 8 | Ludwig Strite | 24 | Son | Chemist | Maryland |
| 9 | Donald J. Strite | 16 | Son | None | Maryland |
| 10 | Christian Johnmeyer | 52 | Head | Butcher | Maryland |
| 11 | Minnie Johnmeyer | 42 | Wife-H | None | Maryland |
| 12 | Thelma Johnmeyer | 21 | Daughter | None | Maryland |
| 13 | Joseph Johnmeyer | 24 | Son-in-law | Clerk | Virginia |
| 14 | Edward Johnmeyer | 18 | Son | Helper | Maryland |
| 15 | Melvin Johnmeyer | 14 | Son | None | Maryland |
| 16 | Helen Johnmeyer | 17 | Daughter | None | Maryland |
| 17 | Elizabeth Johnmeyer | 15 | Daughter | None | Maryland |
| 18 | Edwin Carter | 56 | Head | None | Maryland |
| 19 | Anna G. Carter | 45 | Wife-H | None | Maryland |
| 20 | Thos. P. Dryden | 44 | Head | Proprietor | Maryland |
| 21 | Hortense Dryden | 35 | Wife-H | None | Illinois |
| 22 | John Dryden | 4 | Son | None | Maryland |
| 23 | John Larkin THIS PERSON | 30 | Head | Clerk | Maryland |
| 24 | Alma Larkin | 28 | Wife-H | None | Maryland |
| 25 | John Jr. Larkin | 9 | Son | None | Maryland |
| 26 | Nancy Larkin | 8 | Daughter | None | Maryland |
| 27 | William Larkin | 7 | Son | None | Maryland |
| 28 | Robert Larkin | 4 | Son | None | Maryland |
| 29 | Richard Larkin | 1 | Son | None | Maryland |
| 30 | Catherine Friday | 26 | Maid | Maid | Pennsylvania |
| 31 | Robert G. Schmittle | 57 | Head | Manager | Maryland |
| 32 | Alice G. Schmittle | 50 | Wife-H | None | Maryland |
| 33 | Clinton G. Winslow | 36 | Head | Teacher | Kansas |
| 34 | Eloise A. Winslow | 40 | Wife-H | None | Iowa |
| 35 | Ruth A. Winslow | 3 | Daughter | None | Maryland |
| 36 | Richard Winslow | 3 | Son | None | Maryland |
| 37 | Charles H. Horner | 43 | Head | Vice President | Maryland |
| 38 | Laura B.H. Horner | 42 | Wife-H | None | Maryland |
| 39 | Jean Horner | 20 | Daughter | Secretary | Maryland |
| 40 | Anne Horner | 11 | Daughter | None | Maryland |
| 41 | Generic New | 46 | Head | Securing | Maryland |
| 42 | Jeanette New | 22 | Daughter | None | Maryland |
| 43 | John J. New | 21 | Son-in-law | Proprietor | New York |
| 44 | Gertrude M. New | 21 | Son | None | Massachusetts |
| 45 | William F. Garrish | 51 | Boarder | Proprietor | Maryland |
| 46 | James F. Griffin | 45 | Head | Super. | Wash. D.C. |
| 47 | Maud Griffin | 42 | Wife-H | None | Maryland |
| 48 | Janet E. Griffin | 17 | Daughter | None | Virginia |
| 49 | James A. Jr. Griffin | 16 | Son | None | Virginia |
| 50 | Mary F. Griffin | 13 | Daughter | None | Dist. of Col. |
Pedigree Summary
John
Gen 1 · 1 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)