GM
Grace Martin — 1920 US Census Record
Model Tree available1920 United States Federal Census · Allegheny, Pennsylvania
Our Model Tree links this Grace Martin across the 1900, 1910 and 1920 US Censuses in Allegheny, Pennsylvania (XGBoost, ~Confirmed), with identified parents Thomas & Hanna — first a daughter (b.~1898), then head of a 5-person household.
Age 22
b. ~1898
Female
Daughter
Born: Pennsylvania
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Allegheny, Pennsylvania |
| Surname | Martin |
| Given Name | Grace K |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Additional Details | |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Ben Avon Borough |
| 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.
5 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to Grace | Age | Birth yr |
|---|---|---|---|---|
| Reed Martin | Son | — | 20 | ~1900 |
| Hanna Martin | Spouse | — | 58 | ~1862 |
| Thomas Martin | Head | — | 51 | ~1869 |
| Grace Martin | Daughter | — | 22 | ~1898 |
| John Martin | Son | — | 18 | ~1902 |
Census Appearances
1900
Allegheny, Pennsylvania
Daughter, age 3
Allegheny, Pennsylvania · implied b. ~1897 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Grace R. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Birth Month | Sept |
| Birth Year | 1897 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read | No |
| Can Write | No |
| Speaks English | No |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1910
Allegheny, Pennsylvania
Daughter, age 12
Allegheny, Pennsylvania · implied b. ~1898 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Grace B. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1920
Allegheny, Pennsylvania
Daughter, age 22
Allegheny, Pennsylvania · implied b. ~1898 — 5 household members
| Surname | Martin |
| Given Name | Grace K |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| 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 |
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 Grace Martin across 3 US Census years (1900, 1910 and 1920) in Allegheny, Pennsylvania, using XGBoost record linkage. Identified parents: father Thomas Martin (~0.92 confidence) and mother Hanna Martin (~0.92 confidence) and mother Hannah Martin (~0.92 confidence) and father Thomas Martin (~0.92 confidence) and father Thomas Martin (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Thomas Martin
b. ~1861
Source father
● Household
· direct · ~0.92
Mother
Hanna Martin
b. ~1862
Source mother
● Household
· direct · ~0.92
Mother
Hannah Martin
b. ~1862
Source mother
● Household
· direct · ~0.92
Father
Thomas Martin
b. ~1866
Source father
● Household
· direct · ~0.92
Father
Thomas Martin
b. ~1869
Source father
● Household
· direct · ~0.92
This person
Anchor record
Grace Martin
Daughter · 1920 · age 22 · b. ~1898 · Pennsylvania
★ You are viewing this record
Sibling
John Martin
Sibling · 1920 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Reed Martin
Sibling · 1920 · age 20
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 — Allegheny, Pennsylvania
Open full size
1920 US Federal Census — Allegheny, Pennsylvania
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu1509unit:0516)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Martha M Sullivan | 24 | Wife | — | Pennsylvania |
| 2 | William H Sullivan | 1 | Son | — | Pennsylvania |
| 3 | Geo V Sullivan | 24 | Head | Butcher | Pennsylvania |
| 4 | Mae H Sullivan | 24 | Wife | — | Pennsylvania |
| 5 | Jane E Sullivan | 2 | Son | — | Pennsylvania |
| 6 | James H Grummer | 33 | Head | Valve Grinder | England |
| 7 | Ethel M Grummer | 33 | Wife | — | Pennsylvania |
| 8 | Thomas J Grummer | 1 | Son | — | Pennsylvania |
| 9 | Thomas H Martin | 51 | Head | Electrician | Pennsylvania |
| 10 | Hanna R Martin | 58 | Wife | — | Pennsylvania |
| 11 | Grace K Martin THIS PERSON | 22 | Daughter | — | Pennsylvania |
| 12 | Reed T Martin | 20 | Son | — | Pennsylvania |
| 13 | John L Martin | 18 | Son | — | Pennsylvania |
| 14 | Howard L Merritt | 42 | Head | Principal | Pennsylvania |
| 15 | Jessie B Merritt | 43 | Wife | — | Pennsylvania |
| 16 | Alverda S Merritt | 14 | Daughter | — | Pennsylvania |
| 17 | Howard B Merritt | 12 | Son | — | Pennsylvania |
| 18 | Donald E Merritt | 11 | Son | — | Pennsylvania |
| 19 | Patricia J Merritt | 9 | Daughter | — | Pennsylvania |
| 20 | David R Stouvant | 64 | Lodger | Commercial Traveler | Pennsylvania |
| 21 | Carrie R Stouvant | 63 | Lodger | — | Pennsylvania |
| 22 | Thomas H Rhodes | 54 | Head | Paymaster | Pennsylvania |
| 23 | Jessie Rhodes | 45 | Wife | — | Pennsylvania |
| 24 | Helen Rhodes | 20 | Daughter | — | Pennsylvania |
| 25 | William H Rhodes | 14 | Son | — | Pennsylvania |
| 26 | William H Morrison | 55 | Head | Bookkeeper | Pennsylvania |
| 27 | Jenny S Morrison | 48 | Wife | — | Pennsylvania |
| 28 | Frank H Morrison | 22 | Son | Timekeeper | Pennsylvania |
| 29 | Martha Morrison | 14 | Daughter | — | Pennsylvania |
| 30 | James Michael | 83 | Father-in-law | — | Ireland |
| 31 | Benjamin H Johnson | 35 | Head | Clerk | Ohio |
| 32 | Gladys H Johnson | 27 | Wife | — | Ohio |
| 33 | Frederick Johnson | 6 | Son | — | Pennsylvania |
| 34 | Benjamin Jr Johnson | 5 | Son | — | Pennsylvania |
| 35 | Robert H Lane | 46 | Head | Manager | Michigan |
| 36 | Sarah H Lane | 45 | Wife | — | Ohio |
| 37 | Harriette S Lane | 13 | Daughter | — | Pennsylvania |
| 38 | Esther J Lane | 10 | Daughter | — | Pennsylvania |
| 39 | Beatrice G Lane | 9 | Daughter | — | Pennsylvania |
| 40 | John R Caldwell | 33 | Head | President | Ohio |
| 41 | Ruth R Caldwell | 26 | Wife | — | Ohio |
| 42 | Louise G Caldwell | 2 | Daughter | — | Ohio |
| 43 | Nellie B Lafingman | 44 | Head | — | New York |
| 44 | Mildred F Lafingman | 23 | Daughter | Typist | New York |
| 45 | Edward B Lafingman | 20 | Son | Printer | New York |
| 46 | Ruth Lafingman | 16 | Daughter | — | Pennsylvania |
| 47 | Eleanor Lafingman | 14 | Daughter | — | Pennsylvania |
| 48 | Elizabeth T Hieffenbach | 66 | Lodger | Seamstress | West Virginia |
| 49 | Charles G Roth | 45 | Head | Repairman | Germany |
| 50 | Josephine Roth | 51 | Wife | — | Pennsylvania |
Pedigree Summary
Grace + 2 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 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)