HM
Harry Martin — 1930 US Census Record
Model Tree available1930 United States Federal Census · Delaware, Pennsylvania
Our Model Tree links this Harry Martin across the 1910, 1920 and 1930 US Censuses in Delaware, Pennsylvania (XGBoost, ~Confirmed), with identified parents Thomas & Mary — first a son (b.~1909), then head of a 3-person household.
Age 21
b. ~1909
Male
Son
Born: Pennsylvania
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Delaware, Pennsylvania |
| Surname | Martin |
| Given Name | Harry |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Additional Details | |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Bryn Mawr |
| Est. Birth Year | ~1909 |
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.
3 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Harry | Age | Birth yr |
|---|---|---|---|---|
| Gertrude Martin | Daughter | — | 23 | ~1907 |
| Mary Martin | Head | — | 54 | ~1876 |
| Harry Martin | Son | — | 21 | ~1909 |
Census Appearances
1910
Delaware, Pennsylvania
Son, age 3
Delaware, Pennsylvania · implied b. ~1907 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Harry E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1920
Delaware, Pennsylvania
Son, age 11
Delaware, Pennsylvania · implied b. ~1909 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Harry |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Delaware, Pennsylvania
Son, age 21
Delaware, Pennsylvania · implied b. ~1909 — 3 household members
| Surname | Martin |
| Given Name | Harry |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 Harry Martin across 3 US Census years (1910, 1920 and 1930) in Delaware, Pennsylvania, using XGBoost record linkage. Identified parents: father Thomas Martin (~0.92 confidence) and mother Mary Martin (~0.92 confidence) and mother Mary Martin (~0.92 confidence) and father George Martin (~0.92 confidence) and mother Mary Martin (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Thomas Martin
b. ~1856
Source father
● Household
· direct · ~0.92
Mother
Mary Martin
b. ~1873
Source mother
● Household
· direct · ~0.92
Mother
Mary Martin
b. ~1876
Source mother
● Household
· direct · ~0.92
Father
George Martin
b. ~1878
Source father
● Household
· direct · ~0.92
Mother
Mary Martin
b. ~1878
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Harry Martin
Son · 1930 · age 21 · b. ~1909 · Pennsylvania
★ You are viewing this record
Sibling
Gertrude Martin
Sibling · 1930 · age 23
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 — Delaware, Pennsylvania
Open full size
1930 US Federal Census — Delaware, Pennsylvania
Page Contents
50 people indexed on this census page (ia:1930:fifteenthcensus00reel2031:0550)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Mary L. Martin | 54 | Head | None | Pennsylvania |
| 52 | Gertrude Martin | 23 | Daughter | None | Pennsylvania |
| 53 | Harry Martin THIS PERSON | 21 | Son | None | Pennsylvania |
| 54 | George Charles H. Taper | 49 | Head | Cook | Pennsylvania |
| 55 | Margaret M. Taper | 39 | Wife | None | Pennsylvania |
| 56 | Edson F. Taper | 7 | Son | None | Pennsylvania |
| 57 | Margaret M. Taper | 2 | Daughter | None | Pennsylvania |
| 58 | George C. Jr. Taper | 0 | Son | None | Pennsylvania |
| 59 | Catherine Meyers | 61 | Servant | Servant | Scotland |
| 60 | Grace L. Bell | 26 | Nurse | Nurse | New York |
| 61 | Harold L. Wilson | 28 | Head | Real Estate | Pennsylvania |
| 62 | Elizabeth Wilson | 24 | Wife | None | New York |
| 63 | Herbert Godfrey | 25 | Head | Messenger | North Carolina |
| 64 | Caroline Godfrey | 23 | Sister | Stenographer | North Carolina |
| 65 | Benjamin F. Stahl | 63 | Head | Physician | Pennsylvania |
| 66 | Annette Stahl | 51 | Wife | None | Pennsylvania |
| 67 | Annette M. Stahl | 17 | Daughter | None | Pennsylvania |
| 68 | B. Franklin Stahl | 15 | Son | None | Pennsylvania |
| 69 | William Stahl | 11 | Son | None | Pennsylvania |
| 70 | Annie G. Castle | 86 | Mother-in-law | None | Pennsylvania |
| 71 | Everard Powers | 31 | Servant | Chauffeur | Maine |
| 72 | Irene Powers | 31 | Wife | None | Maine |
| 73 | Everett Powers | 4 | Son | None | Pennsylvania |
| 74 | Richard Powers | 3 | Son | None | Pennsylvania |
| 75 | Evangeline Powers | 1 | Daughter | None | Pennsylvania |
| 76 | Bertrand Wilbur | 60 | Head | Retired | Pennsylvania |
| 77 | Anna V. Wilbur | 56 | Wife | None | Ohio |
| 78 | Harry S. Wilbur | 29 | Son | Medical | Alaska |
| 79 | Elizabeth Borton | 26 | Daughter | Teacher | Pennsylvania |
| 80 | William C. Wilbur | 24 | Son | Student | Pennsylvania |
| 81 | Esther J. Wilbur | 22 | Daughter | None | Pennsylvania |
| 82 | Ross F. Wilbur | 20 | Son | Student | Pennsylvania |
| 83 | Ann G. Wilbur | 18 | Daughter | Student | Pennsylvania |
| 84 | Ruth H. Wilbur | 17 | Daughter | Student | Pennsylvania |
| 85 | Virginia Wilbur | 14 | Daughter | Student | Pennsylvania |
| 86 | George F. Klump | 60 | Head | Retired | Pennsylvania |
| 87 | Anna F. Klump | 58 | Wife | None | Pennsylvania |
| 88 | Catherine Sinnott | 22 | Servant | Servant | Ireland |
| 89 | Lucy Sinnott | 23 | Servant | Servant | Ireland |
| 90 | Horace H. Lee | 70 | Head | Retired | Pennsylvania |
| 91 | Mae B. Lee | 64 | Wife | None | Ohio |
| 92 | Catherine Lester | 31 | Daughter | None | Pennsylvania |
| 93 | Betty Lester | 6 | Granddaughter | None | Pennsylvania |
| 94 | Helen G. Lester | 3 | Granddaughter | None | Pennsylvania |
| 95 | Mary Hunt | 54 | Servant | Servant | Ireland |
| 96 | Ellen Brennan | 45 | Servant | Servant | Pennsylvania |
| 97 | Saunders H. Morris | 67 | Head | Engineer | Pennsylvania |
| 98 | Elisabeth H. Morris | 62 | Wife | None | New York |
| 99 | Margaret Carlin | 20 | Servant | Servant | Ireland |
| 100 | Elizabeth Carlin | 24 | Servant | Servant | Ireland |
Related Census Records
Pedigree Summary
Harry + 1 sibling
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)