MG
Mary Grace — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Maricopa, Arizona
Our Model Tree links this Mary Grace across the 1920 and 1930 US Censuses in Maricopa, Arizona (XGBoost, ~Confirmed) — first a daughter (b.~1920), then head of a 7-person household.
Age 10
b. ~1920
Female
Daughter
Born: Arizona
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Maricopa, Arizona |
| Surname | Grace |
| Given Name | Mary A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Arizona |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Additional Details | |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Arizona |
| Birth Country | United States |
| Birthplace (normalized) | arizona |
| Township / Ward | Phoenix |
| Est. Birth Year | ~1920 |
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.
7 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Kathrine Grace | Daughter | — | 25 | ~1905 |
| Robert Grace | Son | — | 23 | ~1907 |
| William Grace | Son | — | 19 | ~1911 |
| Nonnie Grace | Other | — | 43 | ~1887 |
| Robert Grace | Head | — | 43 | ~1887 |
| Maxine Grace | Daughter | — | 13 | ~1917 |
| Mary Grace | Daughter | — | 10 | ~1920 |
Census Appearances
1920
Maricopa, Arizona
Daughter, age
Maricopa, Arizona · implied b. ~1920 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Grace |
| Given Name | Mary Alta |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Arizona |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Birth State | Arizona |
| Birth Country | United States |
| Birthplace (normalized) | arizona |
1930
Maricopa, Arizona
Daughter, age 10
Maricopa, Arizona · implied b. ~1920 — 7 household members
| Surname | Grace |
| Given Name | Mary A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Arizona |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Arizona |
| Birth Country | United States |
| Birthplace (normalized) | arizona |
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 Mary Grace across 2 US Census years (1920 and 1930) in Maricopa, Arizona, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Grace
Daughter · 1930 · age 10 · b. ~1920 · Arizona
★ You are viewing this record
Sibling
Robert Grace
Sibling · 1930 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kathrine Grace
Sibling · 1930 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Maxine Grace
Sibling · 1930 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Grace
Sibling · 1930 · 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
1930 US Federal Census — Maricopa, Arizona
Open full size
1930 US Federal Census — Maricopa, Arizona
Page Contents
50 people indexed on this census page (ia:1930:15thcensus58unit:0482)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Charles J. Tucker | 39 | Head | Merchant | Arizona |
| 2 | Essie J. Tucker | 33 | Wife-H | None | South Dakota |
| 3 | Frankie M. Tucker | 11 | Daughter | None | Arizona |
| 4 | Madge E. Tucker | 9 | Daughter | None | Arizona |
| 5 | Jannie C. Tucker | 6 | Son | None | Arizona |
| 6 | Cora A. Teple | 20 | Servant | Servant | Iowa |
| 7 | Albert W. Smith | 54 | Head | Trust-Officer | Missouri |
| 8 | Jessie Smith | 49 | Wife | Hostess | Georgia |
| 9 | Gilbert W. Smith | 19 | Son | None | Missouri |
| 10 | Julia Smith | 15 | Daughter | None | Missouri |
| 11 | Julia J. Thomas | 74 | Mother-in-law | None | Georgia |
| 12 | J. Irvin Read | 44 | Head | Minister | Indiana |
| 13 | Jessie M. Read | 45 | Wife-H | None | California |
| 14 | E. Charles | 44 | Head | Private Secretary | Illinois |
| 15 | Nina M. Charles | 41 | Wife-H | None | Colorado |
| 16 | Ruth A. Charles | 17 | Daughter | None | Oklahoma |
| 17 | Elizabeth V. Charles | 15 | Daughter | None | Arizona |
| 18 | Lewis C. Charles | 11 | Son | None | Arizona |
| 19 | James J. Wesley | 53 | Head | Jeweler | Iowa |
| 20 | Marie M. Wesley | 48 | Wife-H | None | Iowa |
| 21 | Lenore D. Wesley | 21 | Daughter | None | Iowa |
| 22 | Gerard J. Wesley | 13 | Son | None | Arizona |
| 23 | Mary D. Wesley | 10 | Daughter | None | Arizona |
| 24 | Sarah A. Calvo | 25 | Servant | Servant | Arizona |
| 25 | Frank W. Nichol | 32 | Head | Cashier | New Jersey |
| 26 | Mary E. Nichol | 33 | Wife-H | None | Pennsylvania |
| 27 | Mary J. Nichol | 7 | Daughter | None | Arizona |
| 28 | Elizabeth F. Nichol | 6 | Daughter | None | Arizona |
| 29 | Robert B. Nichol | 4 | Son | None | Arizona |
| 30 | Dorothy J. Edwards | 16 | Servant | Servant | California |
| 31 | James E. Morden | 67 | Head | Loan Broker | Canada-English |
| 32 | Phoebe A. Morden | 62 | Wife-H | None | England |
| 33 | George E. Morden | 32 | Son | Sales | Canada-English |
| 34 | Norma Roberts | 17 | Servant | Servant | Arkansas |
| 35 | Robert E. Grace | 43 | Head | Realtor | Kentucky |
| 36 | Nonnie Grace | 43 | Wife-H | None | Kentucky |
| 37 | Kathrine M. Grace | 25 | Daughter | Teacher | Kentucky |
| 38 | Robert E. Jr. Grace | 23 | Son | Professional Player | Kentucky |
| 39 | William West Grace | 19 | Son | None | Kentucky |
| 40 | Maxine E. Grace | 13 | Daughter | None | Arizona |
| 41 | Mary A. Grace THIS PERSON | 10 | Daughter | None | Arizona |
| 42 | Bartley Skinner | 50 | Head | President | Kentucky |
| 43 | Lora L. Skinner | 36 | Wife-H | None | Kentucky |
| 44 | Thomas C. Skinner | 22 | Son | Office Clerk | Kentucky |
| 45 | Lora L. Skinner | 11 | Daughter | None | Arizona |
| 46 | Bartley Jr. Skinner | 9 | Son | None | Kentucky |
| 47 | Kenneth M. Quigley | 21 | Nephew | None | Kentucky |
| 48 | Henry B. Orr | 69 | Head | Commercial Traveler | Alabama |
| 49 | Nellie M. Orr | 67 | Wife-H | None | Alabama |
| 50 | Lillian W. Turnbull | 35 | Head | None | Iowa |
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)