RM
Ralph Martin — 1920 US Census Record
Linked across censuses1920 United States Federal Census · San Diego, California
Our Model Tree links this Ralph Martin across the 1910 and 1920 US Censuses in San Diego, California (XGBoost, ~Confirmed) — first a son (b.~1898), then head of a 14-person household.
Age 22
b. ~1898
Male
Son
Born: Colorado
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | San Diego, California |
| Surname | Martin |
| Given Name | Ralph E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Missouri |
| Additional Details | |
| Occupation | Chief Pharmacist Mate |
| Industry | NAS San Diego |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Occupation | Chief Pharmacist Mate |
| Township / Ward | North Island San Diego Township |
| Est. Birth Year | ~1898 |
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.
14 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to Ralph | Age | Birth yr |
|---|---|---|---|---|
| F Stone | Son | — | 16 | ~1904 |
| Charles Doran | Son | — | 51 | ~1869 |
| Ralph Martin | Son | — | 22 | ~1898 |
| Irene Walker | Daughter | — | 24 | ~1896 |
| Ted Jernigan | Son | — | 18 | ~1902 |
| Cola Liebert | Head | — | 36 | ~1884 |
| Henry Long | Son | — | 31 | ~1889 |
| Homer Hampair | Son | — | 18 | ~1902 |
| Ethel Ferguson | Daughter | — | 28 | ~1892 |
| Mary Mitchell | Spouse | — | 25 | ~1895 |
| Anne Blackwell | Daughter | — | 19 | ~1901 |
| Ernest Webb | Other | — | 20 | ~1900 |
| Robert Dempsey | Son | — | 26 | ~1894 |
| John Miller | Son | — | 19 | ~1901 |
Census Appearances
1910
San Diego, …
Son, age 12
San Diego, California · implied b. ~1898 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Ralph E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Missouri |
| Occupation | none |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1920
San Diego, …
Son, age 22
San Diego, California · implied b. ~1898 — 14 household members
| Surname | Martin |
| Given Name | Ralph E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Missouri |
| Occupation | Chief Pharmacist Mate |
| Industry | NAS San Diego |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
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 Ralph Martin across 2 US Census years (1910 and 1920) in San Diego, California, using XGBoost record linkage.
Show:
This person
Anchor record
Ralph Martin
Son · 1920 · age 22 · b. ~1898 · California
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Sibling
Ted Jernigan
Sibling · 1920 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Irene Walker
Sibling · 1920 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anne Blackwell
Sibling · 1920 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Homer Hampair
Sibling · 1920 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
F Stone
Sibling · 1920 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Dempsey
Sibling · 1920 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ethel Ferguson
Sibling · 1920 · age 28
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Doran
Sibling · 1920 · age 51
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Henry Long
Sibling · 1920 · age 31
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Miller
Sibling · 1920 · age 19
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
1920 US Federal Census — San Diego, California
Open full size
1920 US Federal Census — San Diego, California
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu130unit:0616)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Edwin Selfridge | 22 | Son | Sergeant | Pennsylvania |
| 2 | Patrick J. Monad | 39 | Bro | Corporal | Kentucky |
| 3 | Phillip Moreland | 33 | Son | Corporal | Iowa |
| 4 | Thomas H. Ridge | 25 | Son | Corporal | New Jersey |
| 5 | George S. Berry | 23 | Son | Private | Colorado |
| 6 | Robert J. Williams | 35 | Son | Private | Missouri |
| 7 | Rudolph Oppenheimer | 19 | Son | Trumpeter | Kentucky |
| 8 | Hans Amelie | 21 | Son | Private | North Dakota |
| 9 | Paul A. Weaver | 23 | Son | Private | Indiana |
| 10 | Robert W. Gresham | 21 | Son | Private | Missouri |
| 11 | Daniel E. Hammons | 20 | Son | Private | Louisiana |
| 12 | Thomas Saline | 23 | Son | Private | Utah |
| 13 | Buford H. Kieler | 25 | Son | Private | Texas |
| 14 | Carl W. Kloes | 22 | Son | Private | California |
| 15 | Lawrence F. Knudson | 23 | Bro | Private | Illinois |
| 16 | Clarence F. Meyer | 21 | — | Private | Washington |
| 17 | Douglas J. Fuller | 23 | Son | Private | Kentucky |
| 18 | Jacob J. Sikorski | 18 | Son | Private | Ohio |
| 19 | Frank C. Smith | 21 | Son | Private | Illinois |
| 20 | George B. Boyes | 21 | Son | Apprentice Seaman | Missouri |
| 21 | Willard L. Crawford | 33 | — | Apprentice Seaman | Iowa |
| 22 | James R. Singleton | 23 | Son | Apprentice Seaman | Texas |
| 23 | Carl A. Larson | 20 | Son | Quartermaster 2Nd Cl | Sweden |
| 24 | Harold B. Luse | 21 | Son | Yeoman 2Nd Cl | Michigan |
| 25 | Charlie B. Solomon | 20 | Son | Radio Ship Cook | North Carolina |
| 26 | Earle J. Wade | 32 | Head | Gunner | Ohio |
| 27 | John D. Johnson | 20 | Bro | Seaman | Missouri |
| 28 | William L. Elmore | 33 | Son | Chief Gunners Mate | Iowa |
| 29 | Charles A. Williams | 35 | Head | Chief Gunners Mate | New York |
| 30 | Arthur Boyd | 34 | Head | Gunners Mate 1St Cl | Wyoming |
| 31 | Edward H. Gilman | 25 | Son | Gunners Mate 3Rd Cl | Massachusetts |
| 32 | William J. Perry | 22 | Head | Gunners Mate 1St Cl | Tennessee |
| 33 | Clifford E. Williams | 31 | Head | Chief Gunners Mate | Michigan |
| 34 | John S. Carpenter | 27 | Head | Chief Gunners Mate | Louisiana |
| 35 | Percy N. Wood | 17 | Son | Yeoman 3Rd Cl | California |
| 36 | Cola Liebert | 36 | Head | Stenographer | Maryland |
| 37 | Charles R. Doran | 51 | Son | Clerk | California |
| 38 | Anne B. Blackwell | 19 | Daughter | Stenographer | Colorado |
| 39 | Ethel C. Ferguson | 28 | Daughter | Stenographer | Nebraska |
| 40 | Mary M. Mitchell | 25 | Wife | Clerk | Illinois |
| 41 | Henry L. Long | 31 | Son | Clerk | California |
| 42 | Irene E. Walker | 24 | Daughter | Stenographer | Kansas |
| 43 | F. W. Stone | 16 | Son | Clerk | California |
| 44 | Robert S. Dempsey | 26 | Son | Gunners Mate 1St Cl | Missouri |
| 45 | Ernest R. Webb | 20 | Bro | Apprentice Seaman | Maryland |
| 46 | Homer E. Hampair | 18 | Son | Apprentice Seaman | Wisconsin |
| 47 | John O. Miller | 19 | Son | Apprentice Seaman | Indiana |
| 48 | Ralph E. Martin THIS PERSON | 22 | Son | Chief Pharmacist Mate | Colorado |
| 49 | Ted W. Jernigan | 18 | Son | Apprentice Seaman | Tennessee |
| 50 | Galon O. Shelley | 38 | Head | Chief Yeoman | Kansas |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 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)