JC
John Costello — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Marion, Missouri
Our Model Tree links this John Costello across the 1920 and 1930 US Censuses in Marion, Missouri (XGBoost, ~Confirmed) — first a son (b.~1916), then head of a 8-person household.
Age 14
b. ~1916
Male
Son
Born: Missouri
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Marion, Missouri |
| Surname | Costello |
| Given Name | John B. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Missouri |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
| Township / Ward | Mason Township Outside Of Hannibal City |
| Est. Birth Year | ~1916 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| John Costello | Son | — | 14 | ~1916 |
| Julia Costello | Daughter | — | 6 | ~1924 |
| Pauline Costello | Daughter | — | 16 | ~1914 |
| Emma Costello | Spouse | — | 36 | ~1894 |
| Paul Costello | Head | — | 47 | ~1883 |
| Agnes Costello | Daughter | — | 5 | ~1925 |
| William Costello | Son | — | 15 | ~1915 |
| Dorothy Costello | Daughter | — | 11 | ~1919 |
Census Appearances
1920
Marion, Missouri
Son, age 4
Marion, Missouri · implied b. ~1916 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Castello |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Missouri |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1930
Marion, Missouri
Son, age 14
Marion, Missouri · implied b. ~1916 — 8 household members
| Surname | Costello |
| Given Name | John B. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Missouri |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| Can Read/Write | Yes |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
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 John Costello across 2 US Census years (1920 and 1930) in Marion, Missouri, using XGBoost record linkage.
Show:
This person
Anchor record
John Costello
Son · 1930 · age 14 · b. ~1916 · Missouri
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Sibling
Agnes Costello
Sibling · 1930 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Costello
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Costello
Sibling · 1930 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Julia Costello
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Pauline Costello
Sibling · 1930 · age 16
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 — Marion, Missouri
Open full size
1930 US Federal Census — Marion, Missouri
Page Contents
49 people indexed on this census page (ia:1930:missouricensus00reel1212:0030)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Jesse A. | 6 | Son | — | Missouri |
| 52 | Mary F. | 3 | Daughter | — | Missouri |
| 53 | William E. Knollhoff | 29 | Boarder | — | Missouri |
| 54 | Elliott H. Smelser | 28 | Head | Monkey Loader | Missouri |
| 55 | Nellie M. Smelser | 25 | Wife | Edge Trimmer | Missouri |
| 56 | Elliott H. Jr. Smelser | 7 | Son | — | Missouri |
| 57 | Betty J. Smelser | 6 | Daughter | — | Missouri |
| 58 | Everett E. Perkins | 38 | Head | — | Missouri |
| 59 | Blanche L. Perkins | 38 | Wife | Shoe Packer | Missouri |
| 60 | Blanche D. Perkins | 5 | Daughter | — | Missouri |
| 61 | Ethelyn F. Perkins | 3 | Daughter | — | Missouri |
| 62 | Glenn A. Perkins | 1 | Son | — | Missouri |
| 63 | George C. Moore | 61 | Father-in-law | — | Missouri |
| 64 | Jean A. Moore | 62 | Mother-in-law | — | Missouri |
| 65 | Roy N. Gilbert | 42 | Head | Mail Carrier | Indiana |
| 66 | Lulu P. Gilbert | 36 | Wife | — | Missouri |
| 67 | Roy T. Gilbert | 12 | Son | — | Missouri |
| 68 | Margaret E. Gilbert | 9 | Daughter | — | Missouri |
| 69 | Alma J. Gilbert | 7 | Daughter | — | Missouri |
| 70 | Joseph C. Thomas | 65 | Head | — | Kentucky |
| 71 | Margaret J. Thomas | 62 | Wife | — | Missouri |
| 72 | Davilla Thomas | 19 | Daughter | Shoe Stitcher | Texas |
| 73 | Gova W. Givan | 35 | Head | Laster | Missouri |
| 74 | Gladys L. Givan | 31 | Wife | — | Missouri |
| 75 | Guy W. Givan | 13 | Son | — | Missouri |
| 76 | Charles E. Givan | 12 | Son | — | Missouri |
| 77 | Gova Jr. Givan | 8 | Son | — | Missouri |
| 78 | Carl G. Schumm | 43 | Head | House Painter | Missouri |
| 79 | Jessie Schumm | 46 | Wife | — | Missouri |
| 80 | Margaret E. Schumm | 20 | Daughter | — | Missouri |
| 81 | Agnes L. Schumm | 17 | Daughter | — | Missouri |
| 82 | Lloyd G. Schumm | 14 | Son | — | Missouri |
| 83 | Dorothy J. Schumm | 12 | Daughter | — | Missouri |
| 84 | Norma J. Schumm | 9 | Daughter | — | Missouri |
| 85 | Louis J. O'Rourke | 24 | Boarder | Tester | Pennsylvania |
| 86 | Paul M. Costello | 47 | Head | Painter | Missouri |
| 87 | Emma H. Costello | 36 | Wife | — | Missouri |
| 88 | Pauline M. Costello | 16 | Daughter | — | Missouri |
| 89 | William H. Costello | 15 | Son | — | Missouri |
| 90 | John B. Costello THIS PERSON | 14 | Son | — | Missouri |
| 91 | Dorothy J. Costello | 11 | Daughter | — | Missouri |
| 92 | Julia M. Costello | 6 | Daughter | — | Missouri |
| 93 | Agnes G. Costello | 5 | Daughter | — | Missouri |
| 94 | Charles G. Rowe | 48 | Head | Retail Farmer | Illinois |
| 95 | Mary E. Rowe | 22 | Wife | — | Missouri |
| 96 | Econ M. Rowe | 0 | Daughter | — | Arkansas |
| 97 | Ruth J. Keller | 57 | Head | — | Kentucky |
| 98 | Ralph J. Briscoe | 55 | Boarder | Carpenter | Missouri |
| 99 | Lydia A. White | 51 | Boarder | — | Illinois |
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)