RM
Ralph Martin — 1930 US Census Record
Model Tree available1930 United States Federal Census · Rockingham, New Hampshire
Our Model Tree links this Ralph Martin across the 1910, 1920 and 1930 US Censuses in Rockingham, New Hampshire (XGBoost, ~Confirmed), with identified parents Cyrus & Effie — first a son (b.~1905), then head of a 6-person household.
Age 25
b. ~1905
Male
Son
Born: New Hampshire
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Rockingham, New Hampshire |
| Surname | Martin |
| Given Name | Ralph H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | New Hampshire |
| Father's Birthplace | Maine |
| Mother's Birthplace | New Hampshire |
| Additional Details | |
| Occupation | Engineer |
| Industry | Power Plant |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
| Occupation | Engineer |
| Township / Ward | Londonderry Town |
| Est. Birth Year | ~1905 |
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 Ralph | Age | Birth yr |
|---|---|---|---|---|
| Edwin Martin | Son | — | 22 | ~1908 |
| Effie Martin | Head | — | 64 | ~1866 |
| Ralph Martin | Son | — | 25 | ~1905 |
| James Martin | Son | — | 31 | ~1899 |
| Alice Martin | Daughter | — | 23 | ~1907 |
| Harriet Martin | Daughter | — | 32 | ~1898 |
Census Appearances
1910
Rockingham, New …
Son, age 5
Rockingham, New Hampshire · implied b. ~1905 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Ralph S. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | New Hampshire |
| Father's Birthplace | Maine |
| Mother's Birthplace | New Hampshire |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
1920
Rockingham, New …
Son, age 15
Rockingham, New Hampshire · implied b. ~1905 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Ralph A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | New Hampshire |
| Father's Birthplace | Maine |
| Mother's Birthplace | New Hampshire |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
1930
Rockingham, New …
Son, age 25
Rockingham, New Hampshire · implied b. ~1905 — 6 household members
| Surname | Martin |
| Given Name | Ralph H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | New Hampshire |
| Father's Birthplace | Maine |
| Mother's Birthplace | New Hampshire |
| Occupation | Engineer |
| Industry | Power Plant |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
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 3 US Census years (1910, 1920 and 1930) in Rockingham, New Hampshire, using XGBoost record linkage. Identified parents: father Cyrus Martin (~0.92 confidence) and mother Effie Martin (~0.92 confidence) and mother Effie Martin (~0.92 confidence) and father Frank Martin (~0.92 confidence) and mother Alice Martin (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Cyrus Martin
b. ~1862
Source father
● Household
· direct · ~0.92
Mother
Effie Martin
b. ~1866
Source mother
● Household
· direct · ~0.92
Mother
Effie Martin
b. ~1867
Source mother
● Household
· direct · ~0.92
Father
Frank Martin
b. ~1868
Source father
● Household
· direct · ~0.92
Mother
Alice Martin
b. ~1869
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Ralph Martin
Son · 1930 · age 25 · b. ~1905 · New Hampshire
★ You are viewing this record
Sibling
Harriet Martin
Sibling · 1930 · age 32
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Martin
Sibling · 1930 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edwin Martin
Sibling · 1930 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Martin
Sibling · 1930 · age 31
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 — Rockingham, New Hampshire
Open full size
1930 US Federal Census — Rockingham, New Hampshire
Page Contents
50 people indexed on this census page (ia:1930:15thcensus1305unit:0680)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ulrich J. Vasseur | 66 | Head | Farmer | Vermont |
| 2 | Mary Vasseur | 53 | Wife-H | — | New Hampshire |
| 3 | Addie M. Mathesen | 74 | Head | Nurse | New Hampshire |
| 4 | Charles G. Clark | 54 | Head | Farmer | Canada-English |
| 5 | Margaret A. Clark | 51 | Wife-H | — | Massachusetts |
| 6 | Kenneth Clark | 30 | Son | Machinist | Massachusetts |
| 7 | James Clark | 27 | Son | Machinist | Massachusetts |
| 8 | Everett Clark | 24 | Son | Ditto | Massachusetts |
| 9 | Carroll Eugene Clark | 30 | Boarder | Fireman | New Hampshire |
| 10 | Ernest E. Chase | 34 | Head | Laborer | New Hampshire |
| 11 | Annie B. Chase | 50 | Wife-H | — | New Hampshire |
| 12 | Laura E. Titcomb | 72 | Head-H | Bookkeeper | New Hampshire |
| 13 | Mary B. Spear | 54 | Boarder | Trimmer | New Hampshire |
| 14 | Edwin D. Odette | 66 | Head | Physician | Connecticut |
| 15 | Francis A. Odette | 52 | Wife-H | — | Massachusetts |
| 16 | William A. Odette | 12 | Son | — | California |
| 17 | Robert F. Odette | 9 | Son | — | New Hampshire |
| 18 | Edward S. Mcintosh | 47 | Head | Compositor | New Hampshire |
| 19 | Lydia M. Mcintosh | 44 | Wife-H | Stitcher | New Hampshire |
| 20 | Samuel D. Krimman | 37 | Head | Farmer | Russia |
| 21 | Pearl Krimman | 32 | Wife-H | — | Russia |
| 22 | Herman M. Krimman | 14 | Son | — | Connecticut |
| 23 | Andrew Krimman | 13 | Son | — | Connecticut |
| 24 | Anna B. Krimman | 11 | Daughter | — | Massachusetts |
| 25 | Philip Bague | 55 | Head | Laborer | Canada-French |
| 26 | Effie M. Martin | 64 | Head | Housekeeper | New Hampshire |
| 27 | Harriet M. Martin | 32 | Daughter | Booker | New Hampshire |
| 28 | James H. Martin | 31 | Son | Carpenter | New Hampshire |
| 29 | Ralph H. Martin THIS PERSON | 25 | Son | Engineer | New Hampshire |
| 30 | Alice M. Martin | 23 | Daughter | Teacher | New Hampshire |
| 31 | Edwin B. Martin | 22 | Son | Electrician | New Hampshire |
| 32 | Ernest N. Plante | 38 | Head | Farmer | Massachusetts |
| 33 | Mary J. Plante | 34 | Wife-H | Stitcher | Canada-French |
| 34 | Isabain Plante | 4 | Son | — | New Hampshire |
| 35 | Eleanor Martin | 78 | Mother-in-law | — | Canada-French |
| 36 | Anna M. Martin | 33 | Sister-in-law | Vamper | Canada-French |
| 37 | Alex C. Martel | 44 | Head | Stone Cutter | Canada-French |
| 38 | Jessie L. Martel | 39 | Wife-H | — | New Hampshire |
| 39 | Irene E. Martel | 20 | Daughter | Reg. Nurse | New Hampshire |
| 40 | Leon E. Martel | 17 | Son | — | New Hampshire |
| 41 | Charles H. Watts | 68 | Head | Chauffeur | New Hampshire |
| 42 | Mabel A. Watts | 60 | Wife-H | — | New Hampshire |
| 43 | Paul E. Watts | 14 | Grand-son | — | New Hampshire |
| 44 | William H. Kelley | 64 | Head | Laborer | Massachusetts |
| 45 | Berta E. Kelley | 39 | Wife-H | — | New Hampshire |
| 46 | William F. Jr. Kelley | 7 | Son | — | New Hampshire |
| 47 | Beatrice Case | 23 | Boarder | — | Massachusetts |
| 48 | Roy R. Adams | 36 | Head | Laborer | New Hampshire |
| 49 | Sarah Adams | 64 | Mother-H | — | New Hampshire |
| 50 | Francis L. Roy | 13 | Boarder | — | New Hampshire |
Pedigree Summary
Ralph + 4 siblings
Gen 1 · 5 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)