WA
William Armstrong — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Washington, Maryland
Our Model Tree links this William Armstrong across the 1920 and 1930 US Censuses in Washington, Maryland (XGBoost, ~Confirmed) — first a son (b.~1912), then head of a 11-person household.
Age 18
b. ~1912
Male
Son
Born: Pennsylvania
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Washington, Maryland |
| Surname | Armstrong |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Additional Details | |
| Occupation | Packer |
| Industry | Shoe Factory |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Packer |
| Township / Ward | Hagerstown City |
| 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.
11 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Helen Armstrong | Daughter | — | 16 | ~1914 |
| Anna Armstrong | Daughter | — | 20 | ~1910 |
| Catherine Armstrong | Daughter | — | 2 | ~1928 |
| Ruth Armstrong | Daughter | — | 7 | ~1923 |
| Edith Armstrong | Daughter | — | 13 | ~1917 |
| George Armstrong | Head | — | 54 | ~1876 |
| John Armstrong | Son | — | 21 | ~1909 |
| Edward Armstrong | Son | — | 23 | ~1907 |
| William Armstrong | Son | — | 18 | ~1912 |
| Marshall Armstrong | Son | — | 8 | ~1922 |
| Flora Armstrong | Spouse | — | 43 | ~1887 |
Census Appearances
1920
Washington, Maryland
Son, age 7
Washington, Maryland · implied b. ~1913 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Armstrong |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Washington, Maryland
Son, age 18
Washington, Maryland · implied b. ~1912 — 11 household members
| Surname | Armstrong |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Packer |
| Industry | Shoe Factory |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| 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 William Armstrong across 2 US Census years (1920 and 1930) in Washington, Maryland, using XGBoost record linkage.
Show:
This person
Anchor record
William Armstrong
Son · 1930 · age 18 · b. ~1912 · Maryland
★ You are viewing this record
Sibling
Helen Armstrong
Sibling · 1930 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Armstrong
Sibling · 1930 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Armstrong
Sibling · 1930 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Armstrong
Sibling · 1930 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Armstrong
Sibling · 1930 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edith Armstrong
Sibling · 1930 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marshall Armstrong
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anna Armstrong
Sibling · 1930 · age 20
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 — Washington, Maryland
Open full size
1930 US Federal Census — Washington, Maryland
Page Contents
50 people indexed on this census page (ia:1930:15thcensus880unit:1062)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Mary Sleeper | 16 | Daughter | — | Maryland |
| 52 | Sarah Sleeper | 13 | Daughter | — | Maryland |
| 53 | Allison Jr Sleeper | 11 | Son | — | Maryland |
| 54 | Edward Sleeper | 8 | Son | — | Maryland |
| 55 | Leroy Jamison | 3 | Grandson | — | Maryland |
| 56 | Claude S Miller | 61 | Head | Upholsterer | Indiana |
| 57 | Allie Miller | 55 | Wife | — | Ohio |
| 58 | Elizabeth Bowers | 32 | Head | Nurse | Maryland |
| 59 | William Bowers | 16 | Son | — | Maryland |
| 60 | George Armstrong | 54 | Head | Laborer | Pennsylvania |
| 61 | Flora Armstrong | 43 | Wife | — | Pennsylvania |
| 62 | Edward Armstrong | 23 | Son | Trackman | Pennsylvania |
| 63 | John Armstrong | 21 | Son | Machinist | Pennsylvania |
| 64 | Anna Armstrong | 20 | Daughter | Cook | Pennsylvania |
| 65 | William Armstrong THIS PERSON | 18 | Son | Packer | Pennsylvania |
| 66 | Helen Armstrong | 16 | Daughter | — | Maryland |
| 67 | Edith Armstrong | 13 | Daughter | — | Maryland |
| 68 | Marshall Armstrong | 8 | Son | — | Maryland |
| 69 | Ruth Armstrong | 7 | Daughter | — | Maryland |
| 70 | Catherine Armstrong | 2 | Daughter | — | Maryland |
| 71 | Russell Ralls | 30 | Head | Shoemaker | Virginia |
| 72 | Ethel Ralls | 22 | Wife | — | Maryland |
| 73 | Wilbur Ralls | 7 | Son | — | Maryland |
| 74 | Daisy Ralls | 5 | Daughter | — | Maryland |
| 75 | Cora Simmons | 44 | Boarder | — | Pennsylvania |
| 76 | William Boyer | 17 | Boarder | — | Maryland |
| 77 | James Mahone | 21 | Head | Plumber | Virginia |
| 78 | Gladys Mahone | 25 | Wife | — | Maryland |
| 79 | James Jr Mahone | 2 | Son | — | Maryland |
| 80 | William Hanson | 33 | Head | Machinist | Maryland |
| 81 | Nettie Hanson | 29 | Wife | — | Maryland |
| 82 | William Hanson | 12 | Son | — | Maryland |
| 83 | Marvin Hanson | 10 | Son | — | Maryland |
| 84 | Bilia Hanson | 7 | Daughter | — | Maryland |
| 85 | James Hanson | 4 | Son | — | Maryland |
| 86 | Howard Harbaugh | 45 | Head | Laborer | Maryland |
| 87 | Lula Harbaugh | 43 | Wife | — | Maryland |
| 88 | Eileen Harbaugh | 14 | Daughter | — | Maryland |
| 89 | Alice Harbaugh | 10 | Son | — | Maryland |
| 90 | Mary J Harbaugh | 9 | Daughter | — | Maryland |
| 91 | Jack Harbaugh | 7 | Son | — | Maryland |
| 92 | William Harbaugh | 5 | Son | — | Maryland |
| 93 | Phylis L Harbaugh | 3 | Daughter | — | Maryland |
| 94 | George White | 22 | Son-in-law | Laborer | Pennsylvania |
| 95 | Elizabeth White | 18 | Daughter | — | Maryland |
| 96 | Gloria White | 1 | Granddaughter | — | Maryland |
| 97 | Harry Cleave | 23 | Head | Printer | Virginia |
| 98 | Anna Cleave | 19 | Wife | — | Maryland |
| 99 | Helen Cleave | 2 | Daughter | — | Maryland |
| 100 | Betty Cleave | 0 | Daughter | — | Maryland |
Related Census Records
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)