AC
Arthur Cooper — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Harford, Maryland
Our Model Tree links this Arthur Cooper across the 1920 and 1930 US Censuses in Harford, Maryland (XGBoost, ~Confirmed) — first a son (b.~1912), then head of a 10-person household.
Age 18
b. ~1912
Male
Son
Born: Pennsylvania
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Harford, Maryland |
| Surname | Cooper |
| Given Name | Arthur |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Maryland |
| Additional Details | |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Laborer |
| Township / Ward | 5 Election District |
| Est. Birth Year | ~1912 |
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.
10 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Arthur | Age | Birth yr |
|---|---|---|---|---|
| Lewis Cooper | Head | — | 42 | ~1888 |
| Clifford Cooper | Son | — | 6 | ~1924 |
| Sonia Cooper | Daughter | — | 10 | ~1920 |
| Helen Cooper | Daughter | — | 22 | ~1908 |
| Lewis Cooper | Son | — | 11 | ~1919 |
| Alice Cooper | Son | — | 4 | ~1926 |
| Robert Cooper | Son | — | 13 | ~1917 |
| Edward Cooper | Son | — | 8 | ~1922 |
| Walter Cooper | Son | — | 20 | ~1910 |
| Arthur Cooper | Son | — | 18 | ~1912 |
Census Appearances
1920
Harford, Maryland
Son, age 8
Harford, Maryland · implied b. ~1912 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Arthur |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Harford, Maryland
Son, age 18
Harford, Maryland · implied b. ~1912 — 10 household members
| Surname | Cooper |
| Given Name | Arthur |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Maryland |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | W |
| Can Read/Write | 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 Arthur Cooper across 2 US Census years (1920 and 1930) in Harford, Maryland, using XGBoost record linkage.
Show:
This person
Anchor record
Arthur Cooper
Son · 1930 · age 18 · b. ~1912 · Maryland
★ You are viewing this record
Sibling
Helen Cooper
Sibling · 1930 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Cooper
Sibling · 1930 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Cooper
Sibling · 1930 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Clifford Cooper
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Cooper
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Walter Cooper
Sibling · 1930 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lewis Cooper
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Sonia Cooper
Sibling · 1930 · age 10
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 — Harford, Maryland
Open full size
1930 US Federal Census — Harford, Maryland
Page Contents
50 people indexed on this census page (ia:1930:15thcensus875unit:0446)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Harry L Skelton | 18 | Head | Laborer | Maryland |
| 52 | Emanuel Waters | 47 | Head | Mulherer | Pennsylvania |
| 53 | Viola Waters | 42 | Wife | — | Maryland |
| 54 | Gertrude Waters | 20 | Daughter | Seamstress | Delaware |
| 55 | Thomas B Waters | 16 | Son | — | New Jersey |
| 56 | James E Waters | 13 | Son | — | New Jersey |
| 57 | Viola M Waters | 11 | Daughter | — | Maryland |
| 58 | Paul E Waters | 10 | Son | — | Pennsylvania |
| 59 | Eison J Towan | 53 | Head | Farmer | Kansas |
| 60 | Naomi W Towan | 54 | Wife | — | Maryland |
| 61 | Austin N Towan | 21 | Son | Farmer | Maryland |
| 62 | Margaret A Towan | 17 | Daughter | — | Maryland |
| 63 | Helen E Towan | 13 | Daughter | — | Maryland |
| 64 | Thomas H Ruley | 63 | Head | Laborer | Maryland |
| 65 | Mary M Ruley | 62 | Wife | — | Pennsylvania |
| 66 | Ralph Ruley | 14 | Grandson | Laborer | Maryland |
| 67 | Harry Henry | 63 | Head | Farmer | Pennsylvania |
| 68 | Bessie Henry | 32 | Daughter | Farmer | Maryland |
| 69 | Constance Henry | 12 | Granddaughter | — | Pennsylvania |
| 70 | James Nahr | 62 | Head | Farmer | Maryland |
| 71 | Rose Nahr | 60 | Wife | — | Pennsylvania |
| 72 | Stanley J Nahr | 29 | Son | Laborer | Maryland |
| 73 | Susan J Nahr | 89 | Mother-in-law | — | Pennsylvania |
| 74 | Clarence Hamilton | 33 | Head | Farmer | Maryland |
| 75 | Lucy Hamilton | 26 | Wife | — | Maryland |
| 76 | Gilbert J Hamilton | 7 | Son | — | Maryland |
| 77 | Clarence E Hamilton | 6 | Son | — | Maryland |
| 78 | Belle E Leckman | 50 | Mother-in-law | — | Pennsylvania |
| 79 | George E White | 74 | Head | — | Maryland |
| 80 | Burton E Ryland | 66 | Head | Farmer | Maryland |
| 81 | Joseph Ryland | 48 | Brother | Laborer | Maryland |
| 82 | Nelson Duff | 60 | Head | Farmer | Maryland |
| 83 | George Grant | 63 | Head | Farmer | Delaware |
| 84 | Anna Schreidgel | 41 | Servant | House Keeper | Pennsylvania |
| 85 | Lewis Cooper | 42 | Head | Laborer | Pennsylvania |
| 86 | Helen Cooper | 22 | Daughter | — | Maryland |
| 87 | Walter S Cooper | 20 | Son | Laborer | Maryland |
| 88 | Arthur Cooper THIS PERSON | 18 | Son | Laborer | Pennsylvania |
| 89 | Cooper | 15 | Daughter | Servant | Maryland |
| 90 | Robert E Cooper | 13 | Son | — | Maryland |
| 91 | Lewis R Cooper | 11 | Son | — | Maryland |
| 92 | Sonia V Cooper | 10 | Daughter | — | Maryland |
| 93 | Edward L Cooper | 8 | Son | — | Maryland |
| 94 | Clifford M Cooper | 6 | Son | — | Maryland |
| 95 | Alice R Cooper | 4 | Son | — | Maryland |
| 96 | Sidney Cooper | 68 | Head | Farmer | Maryland |
| 97 | Thomas M Cooper | 22 | Son | Laborer | Maryland |
| 98 | Valentine Melrugh | 68 | Head | Farmer | Maryland |
| 99 | Elmer G Human | 38 | Lodger | Laborer | Maryland |
| 100 | Fred A Cooper | 52 | Head | Farmer | Maryland |
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)