MC
Mary Chase — 1930 US Census Record
Model Tree available1930 United States Federal Census · Polk, Florida
Our Model Tree links this Mary Chase across the 1910, 1920 and 1930 US Censuses in Polk, Florida (XGBoost, ~Confirmed), with identified parents William & Margaret — first a daughter (b.~1910), then head of a 6-person household.
Age 20
b. ~1910
Female
Daughter
Born: Florida
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Polk, Florida |
| Surname | Chase |
| Given Name | Mary D |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Florida |
| Father's Birthplace | New Hampshire |
| Mother's Birthplace | Maine |
| Additional Details | |
| Occupation | Stenographer |
| Industry | Garage |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
| Occupation | Stenographer |
| Township / Ward | City Of Lakeland |
| Est. Birth Year | ~1910 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Frank Chase | Son | — | 22 | ~1908 |
| Margaret Chase | Other | — | 52 | ~1878 |
| William Chase | Head | — | 53 | ~1877 |
| William Chase | Son | — | 16 | ~1914 |
| Catherine Chase | Daughter | — | 18 | ~1912 |
| Mary Chase | Daughter | — | 20 | ~1910 |
Census Appearances
1910
Polk, Florida
Daughter, age
Polk, Florida · implied b. ~1910 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Chase |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Florida |
| Father's Birthplace | New Hampshire |
| Mother's Birthplace | Maine |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
1920
Polk, Florida
Daughter, age 10
Polk, Florida · implied b. ~1910 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Chase |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Florida |
| Father's Birthplace | New Hampshire |
| Mother's Birthplace | Maine |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
1930
Polk, Florida
Daughter, age 20
Polk, Florida · implied b. ~1910 — 6 household members
| Surname | Chase |
| Given Name | Mary D |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Florida |
| Father's Birthplace | New Hampshire |
| Mother's Birthplace | Maine |
| Occupation | Stenographer |
| Industry | Garage |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
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 Chase across 3 US Census years (1910, 1920 and 1930) in Polk, Florida, using XGBoost record linkage. Identified parents: father William Chase (~0.92 confidence) and mother Margaret Chase (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Chase
b. ~1878
Source father
● Household
· direct · ~0.92
Mother
Margaret Chase
b. ~1878
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Chase
Daughter · 1930 · age 20 · b. ~1910 · Florida
★ You are viewing this record
Sibling
Catherine Chase
Sibling · 1930 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Chase
Sibling · 1930 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frank Chase
Sibling · 1930 · age 22
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 — Polk, Florida
Open full size
1930 US Federal Census — Polk, Florida
Page Contents
43 people indexed on this census page (ia:1930:15thcensus331unit:0126)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Edna S By Moore | 41 | Wife-H | — | Minnesota |
| 52 | Josephine Simmons | 79 | Mother-in-law | — | Virginia |
| 53 | Willita Marion Simmons | 49 | Daughter-in-law | — | Minnesota |
| 54 | Jesse M Welch | 44 | Head | Truck Driver | Georgia |
| 55 | Carrie V Welch | 45 | Wife-H | — | Georgia |
| 56 | Frank G Welch | 19 | Son | Laborer | Georgia |
| 57 | Hubert S Welch | 17 | Son | — | Georgia |
| 58 | Dale Williams | 39 | Head | Citrus Grower | Kansas |
| 59 | Pauline C Williams | 38 | Wife-H | — | Texas |
| 60 | Dale Williams | 12 | Son | — | Florida |
| 61 | Patsy A Williams | 7 | Daughter | — | Florida |
| 62 | John A Williams | 67 | Head | Treasurer | New York |
| 63 | Daisy C Williams | 56 | Wife-H | — | New Jersey |
| 64 | John C Williams | 17 | Son | — | Florida |
| 65 | William W Chase | 53 | Head | Partner | New Hampshire |
| 66 | Margaret M Chase | 52 | Wife-H | — | Maine |
| 67 | Frank R Chase | 22 | Son | Bookkeeper | Florida |
| 68 | Mary D Chase THIS PERSON | 20 | Daughter | Stenographer | Florida |
| 69 | Catherine S Chase | 18 | Daughter | — | Florida |
| 70 | William W Chase | 16 | Son | — | Florida |
| 71 | Seth H Collins | 62 | Head | Owner | Pennsylvania |
| 72 | Sara E Collins | 65 | Wife-H | Owner | Indiana |
| 73 | Luther Jones | 44 | Servant | Laborer | Georgia |
| 74 | Robert W Howard | 57 | Head | Agent | Mississippi |
| 75 | Alice M Howard | 70 | Wife-H | Retired | Missouri |
| 76 | Herbert Merlan | 34 | Head | Woodman | South Carolina |
| 77 | Zois Merlan | 29 | Wife-H | — | Alabama |
| 78 | Thomas Merlan | 8 | Son | — | Florida |
| 79 | Dorothy Merlan | 6 | Daughter | — | Florida |
| 80 | Dorsey Merlan | 3 | Son | — | Florida |
| 81 | Doris Merlan | 2 | Daughter | — | Florida |
| 82 | Edward C O'Flanagan | 34 | Head | Salesman | Florida |
| 83 | Nell M O'Flanagan | 24 | Wife-H | — | South Carolina |
| 84 | Marion E O'Flanagan | 6 | Daughter | — | Georgia |
| 85 | Pat O'Flanagan | 1 | Son | — | Florida |
| 86 | Mary Batts | 39 | Head | Washerwoman | Georgia |
| 87 | Ephriam Batts | 22 | Son | Laborer | Georgia |
| 88 | Moses H Gunn | 55 | Boarder | Laborer | Georgia |
| 89 | Stephen F Reynolds | 51 | Head | Laborer | Florida |
| 90 | Josephine Reynolds | 50 | Wife-H | — | South Carolina |
| 91 | Alvin J Fullashaw | 32 | Head | Dentist | Louisiana |
| 92 | Alyce P Fullashaw | 30 | Wife-H | — | Louisiana |
| 93 | Alvin J Fullashaw | 6 | Son | — | Louisiana |
Related Census Records
Pedigree Summary
Mary + 3 siblings
Gen 1 · 2 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)