MS
Mary Strong — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Keokuk, Iowa
Our Model Tree links this Mary Strong across the 1930 and 1940 US Censuses in Keokuk, Iowa (XGBoost, ~Confirmed) — first a daughter (b.~1913), then head of a 8-person household.
Age 17
b. ~1913
Female
Daughter
Born: Iowa
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Keokuk, Iowa |
| Surname | Strong |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Nebraska |
| Mother's Birthplace | Illinois |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | What Cheer City |
| Est. Birth Year | ~1913 |
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.
8 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Martha Strong | Daughter | — | 14 | ~1916 |
| Lowell Strong | Son | — | 7 | ~1923 |
| Mary Strong | Daughter | — | 17 | ~1913 |
| Minnie Strong | Spouse | — | 46 | ~1884 |
| Nate Strong | Head | — | 56 | ~1874 |
| Bertha Strong | Daughter | — | 12 | ~1918 |
| Ray Strong | Son | — | 19 | ~1911 |
| Lois Strong | Daughter | — | 9 | ~1921 |
Census Appearances
1930
Keokuk, Iowa
Daughter, age 17
Keokuk, Iowa · implied b. ~1913 — 8 household members
| Surname | Strong |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Nebraska |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Keokuk-County, Iowa
Daughter, age 27
Keokuk-County, Iowa · implied b. ~1913 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Strong |
| Given Name | Margaret A. B. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Plank Twsp. |
| 1935 Residence (County) | Keokuk County |
| Class of Worker | NP |
| Income (1939) | 0 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 Strong across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Strong
Daughter · 1930 · age 17 · b. ~1913 · Iowa
★ You are viewing this record
Sibling
Lowell Strong
Sibling · 1930 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ray Strong
Sibling · 1930 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lois Strong
Sibling · 1930 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bertha Strong
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Martha Strong
Sibling · 1930 · age 14
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 — Keokuk, Iowa
Open full size
1930 US Federal Census — Keokuk, Iowa
Page Contents
50 people indexed on this census page (ia:1930:iowacensus00reel662:0900)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Gertrude Repplinger | 21 | Daughter | — | Iowa |
| 2 | James Repplinger | 20 | Son | Baker | Iowa |
| 3 | Ed D. Ball | 46 | Head | Miner | Illinois |
| 4 | Jane Ball | 49 | Wife | — | England |
| 5 | Mary Pringle | 45 | Mother-in-law | — | Iowa |
| 6 | Edna Mae Ball | 16 | Daughter | — | Iowa |
| 7 | D. G. Knox | 26 | Head | Salesman | Iowa |
| 8 | Dollie Knox | 23 | Wife | Nurse | Iowa |
| 9 | Dale Knox | 14 | Brother | — | Iowa |
| 10 | Pete Armstrong | 59 | Head | Miner | Illinois |
| 11 | Mary Armstrong | 54 | Wife | — | Scotland |
| 12 | Hilda Armstrong | 16 | Daughter | — | Iowa |
| 13 | Dean H. Armstrong | 4 | Son | — | Iowa |
| 14 | Robert May Moffat | 71 | Head | — | Scotland |
| 15 | Billie Moffat | 29 | Son | Manager | Iowa |
| 16 | John Deck | 81 | Head | — | England |
| 17 | Margaret James | 83 | Head | — | South Wales |
| 18 | Ethel James | 37 | Daughter | Bookkeeper | Iowa |
| 19 | Fred Vermillion | 26 | Head | Laborer | Iowa |
| 20 | Della Vermillion | 21 | Wife | — | Iowa |
| 21 | Maxine Vermillion | 4 | Daughter | — | Iowa |
| 22 | Marvin Vermillion | 1 | Son | — | Iowa |
| 23 | B. C. Thomas | 36 | Head | Laborer | Iowa |
| 24 | Serena Thomas | 23 | Wife | — | Kansas |
| 25 | Virginia Thomas | 8 | Daughter | — | Kansas |
| 26 | Arden Thomas | 2 | Son | — | Missouri |
| 27 | H. P. Roland | 38 | Head | Laborer | Belgium |
| 28 | Agnes Roland | 36 | Wife | — | Iowa |
| 29 | Donald Roland | 1 | Son | — | Iowa |
| 30 | R. G. Dalziel | 63 | Head | Musician | Scotland |
| 31 | S. G. Cleveland | 22 | Head | Minister | Indiana |
| 32 | Meriam Cleveland | 19 | Wife | Nurse | Iowa |
| 33 | E. A. Roland | 36 | Head | Farmer | Iowa |
| 34 | Ann S. Roland | 26 | Wife | — | Iowa |
| 35 | Berta Johnson | 53 | Head | — | Norway |
| 36 | Martin Johnson | 30 | Son | Brick Mason | Norway |
| 37 | Melvin Johnson | 16 | Son | — | Iowa |
| 38 | Margaret Johnson | 15 | Daughter | — | Iowa |
| 39 | Mary Dayden | 53 | Head | Maid | Ohio |
| 40 | C. H. Dayden | 26 | Son | Farmer | Iowa |
| 41 | Nate Strong | 56 | Head | Drayman | Nebraska |
| 42 | Minnie Strong | 46 | Wife | — | Illinois |
| 43 | Ray Nathan Strong | 19 | Son | — | Iowa |
| 44 | Mary Strong THIS PERSON | 17 | Daughter | — | Iowa |
| 45 | Martha Strong | 14 | Daughter | — | Iowa |
| 46 | Bertha Strong | 12 | Daughter | — | Iowa |
| 47 | Lois Strong | 9 | Daughter | — | Iowa |
| 48 | Lowell Strong | 7 | Son | — | Iowa |
| 49 | Joseph Reconque | 70 | Head | — | Belgium |
| 50 | Jesse Jeref | 45 | Head | Laborer | 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)