CM
Charlie Martin — 1930 US Census Record
Model Tree available1930 United States Federal Census · Harford, Maryland
Our Model Tree links this Charlie Martin across the 1920, 1930 and 1940 US Censuses in Harford, Maryland (XGBoost, ~Confirmed), with identified parents Frank & Anna — first a son (b.~1907), then head of a 5-person household.
Age 23
b. ~1907
Male
Son
Born: Maryland
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Harford, Maryland |
| Surname | Martin |
| Given Name | Charlie |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Additional Details | |
| Occupation | Laborer |
| Industry | Dairy farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Laborer |
| Township / Ward | Third Election District |
| Est. Birth Year | ~1907 |
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.
5 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Charlie | Age | Birth yr |
|---|---|---|---|---|
| Frank Martin | Head | — | 65 | ~1865 |
| Annie Martin | Other | — | 55 | ~1875 |
| Charlie Martin | Son | — | 23 | ~1907 |
| Elizabeth Martin | Daughter | — | 18 | ~1912 |
| Elwood Martin | Son | — | 24 | ~1906 |
Census Appearances
Son, age 12
Harford, Maryland · implied b. ~1908 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Charles J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| 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
Harford, Maryland
Son, age 23
Harford, Maryland · implied b. ~1907 — 5 household members
| Surname | Martin |
| Given Name | Charlie |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Laborer |
| Industry | Dairy farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Harford-County, Maryland
Head, age 32
Harford-County, Maryland · implied b. ~1908 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Calvin |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | 1st Election District / Abingdon |
| 1935 Residence (County) | Harford |
| Occupation | Carpenter |
| Industry | Own business |
| Class of Worker | OA |
| Hours Worked | 50 |
| Income (1939) | 450 |
| Highest Grade | C 2 |
| 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 Charlie Martin across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Frank Martin (~0.92 confidence) and mother Anna Martin (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Frank Martin
b. ~1866
Source father
● Household
· direct · ~0.92
Mother
Anna Martin
b. ~1877
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Charlie Martin
Son · 1930 · age 23 · b. ~1907 · Maryland
★ You are viewing this record
Sibling
Elizabeth Martin
Sibling · 1930 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elwood Martin
Sibling · 1930 · age 24
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 — Harford, Maryland
Open full size
1930 US Federal Census — Harford, Maryland
Page Contents
50 people indexed on this census page (ia:1930:15thcensus875unit:0900)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Ruth Grafton | 10 | niece | — | Maryland |
| 52 | James P. Monks | 60 | Head | Farmer | Maryland |
| 53 | Rosa M. Monks | 53 | wife-H | None | Maryland |
| 54 | Lucile Monks | 14 | daughter | None | Maryland |
| 55 | James C. Bailey | 32 | nephew | None | Maryland |
| 56 | Lawrence Marrow | 52 | boarder | Yes | North Ireland |
| 57 | Howard W. Martin | 53 | Head | Farmer | Maryland |
| 58 | H. May Martin | 55 | wife-H | None | Pennsylvania |
| 59 | Hollis Martin | 19 | son | None | Maryland |
| 60 | J. Allen Smith | 26 | son | Labourer | Maryland |
| 61 | Roberta Smith | 22 | daughter | None | Maryland |
| 62 | Robert Smith | 4 | son | None | Maryland |
| 63 | H. Frederick Smith | 2 | son | None | Maryland |
| 64 | Wilson E. Smith | 1 | grandson | None | Maryland |
| 65 | Howard Mitchell | 48 | Head | Labourer | Maryland |
| 66 | Jennie Mitchell | 47 | wife-H | Laundress | Maryland |
| 67 | Lavinia Grafton | 74 | Head-H | None | Maryland |
| 68 | John L. Grafton | 33 | son | Farmer | Maryland |
| 69 | Vincent Walton | 24 | nephew | Labourer | Maryland |
| 70 | William Rogers | 54 | Head | Farmer | Maryland |
| 71 | Oneida Rogers | 48 | wife-H | None | Maryland |
| 72 | Grant Cox | 43 | Head | Labourer | Kentucky |
| 73 | Maude Cox | 38 | wife-H | None | North Carolina |
| 74 | Esta Cox | 16 | daughter | None | North Carolina |
| 75 | Coy Cox | 14 | son | None | North Carolina |
| 76 | Marie Cox | 12 | daughter | None | North Carolina |
| 77 | Jessie Cox | 10 | son | None | North Carolina |
| 78 | Beuna Cox | 8 | daughter | None | North Carolina |
| 79 | Calvin Cox | 5 | son | None | North Carolina |
| 80 | Howard Cox | 2 | son | None | North Carolina |
| 81 | Willard E. Grafton | 41 | Manager | Farmer | Maryland |
| 82 | David Belsh | 38 | Head | Labourer | Maryland |
| 83 | Ella M. Belsh | 38 | wife-H | None | Maryland |
| 84 | Alice M. Belsh | 17 | daughter | None | Maryland |
| 85 | Lillian C. Belsh | 11 | son | None | Maryland |
| 86 | Arnold Belsh | 3 | son | None | Maryland |
| 87 | Robert L. Hamilton | 52 | Head | Farmer | Tennessee |
| 88 | Carrie Hamilton | 43 | wife-H | None | Tennessee |
| 89 | Rose G. Pale | 59 | Head-H | None | Maryland |
| 90 | Harry C. Thebold | 32 | cousin | Sailor | Maryland |
| 91 | Frank Martin | 65 | Head | Farmer | Maryland |
| 92 | Annie Martin | 55 | wife-H | None | Maryland |
| 93 | Elwood Martin | 24 | son | Laborer | Maryland |
| 94 | Charlie Martin THIS PERSON | 23 | son | Laborer | Maryland |
| 95 | Elizabeth Martin | 18 | daughter | Laborer | Maryland |
| 96 | Charles W. Hudler | 37 | Head | Farmer | North Carolina |
| 97 | Gertie Hudler | 36 | wife-H | None | Virginia |
| 98 | Geneva Hudler | 14 | daughter | None | Washington |
| 99 | Ray Hudler | 13 | son | None | Washington |
| 100 | D. Albert Hudler | 9 | son | None | Virginia |
Related Census Records
Pedigree Summary
Charlie + 2 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)