WD
William Davidson — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Carroll, Maryland
Our Model Tree links this William Davidson across the 1920 and 1930 US Censuses in Carroll, Maryland (XGBoost, ~Confirmed) — first a son (b.~1907), then head of a 9-person household.
Age 23
b. ~1907
Male
Son
Born: Maryland
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Carroll, Maryland |
| Surname | Davidson |
| Given Name | William A |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Additional Details | |
| Occupation | Laborer |
| Industry | Creamery |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Laborer |
| Township / Ward | Woolerys District No 4 |
| Est. Birth Year | ~1907 |
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.
9 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Martha Davidson | Daughter | — | 10 | ~1920 |
| Susanna Davidson | Daughter | — | 12 | ~1918 |
| Nellie Davidson | Daughter | — | 19 | ~1911 |
| G Davidson | Head | — | 45 | ~1885 |
| Martha Davidson | Other | — | 44 | ~1886 |
| Robert Davidson | Son | — | 3 | ~1927 |
| G Davidson | Son | — | 21 | ~1909 |
| Charles Davidson | Son | — | 5 | ~1925 |
| William Davidson | Son | — | 23 | ~1907 |
Census Appearances
1920
Carroll, Maryland
Son, age 12
Carroll, Maryland · implied b. ~1908 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davidson |
| Given Name | William A |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Carroll, Maryland
Son, age 23
Carroll, Maryland · implied b. ~1907 — 9 household members
| Surname | Davidson |
| Given Name | William A |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Laborer |
| Industry | Creamery |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
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 Davidson across 2 US Census years (1920 and 1930) in Carroll, Maryland, using XGBoost record linkage.
Show:
This person
Anchor record
William Davidson
Son · 1930 · age 23 · b. ~1907 · Maryland
★ You are viewing this record
Sibling
Nellie Davidson
Sibling · 1930 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
G Davidson
Sibling · 1930 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Davidson
Sibling · 1930 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Martha Davidson
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Davidson
Sibling · 1930 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Susanna Davidson
Sibling · 1930 · age 12
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 — Carroll, Maryland
Open full size
1930 US Federal Census — Carroll, Maryland
Page Contents
50 people indexed on this census page (ia:1930:15thcensus872unit:0171)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Virginia Armacost | 1 | Daughter | None | Maryland |
| 2 | Giorgetta Bartholow | 47 | Head-H | None | Virginia |
| 3 | Hanson Bartholow | 20 | Son | Laborer | Maryland |
| 4 | Alfred B Bartholow | 16 | Son | Laborer | Maryland |
| 5 | William C Bartholow | 13 | Son | None | Maryland |
| 6 | Margaret G Bartholow | 12 | Daughter | None | Maryland |
| 7 | Pearl G Bartholow | 12 | Daughter | None | Maryland |
| 8 | Preston S Bosley | 54 | Head | Farmer | Maryland |
| 9 | Ida D Bosley | 52 | Wife-H | None | Maryland |
| 10 | Stanley P Bosley | 19 | Son | Laborer | Maryland |
| 11 | G Howden Davidson | 45 | Head | Farmer | Maryland |
| 12 | Martha E Davidson | 44 | Wife-H | None | Maryland |
| 13 | William A Davidson THIS PERSON | 23 | Son | Laborer | Maryland |
| 14 | G Howden Jr Davidson | 21 | Son | Laborer | Maryland |
| 15 | Nellie E Davidson | 19 | Daughter | None | Maryland |
| 16 | Susanna G Davidson | 12 | Daughter | None | Maryland |
| 17 | Martha T Davidson | 10 | Daughter | None | Maryland |
| 18 | Charles T Davidson | 5 | Son | None | Maryland |
| 19 | Robert L Davidson | 3 | Son | None | Maryland |
| 20 | Clarence J Blizzard | 32 | Head | Laborer | Maryland |
| 21 | Nellie M Blizzard | 30 | Wife-H | None | Maryland |
| 22 | Garrett M Blizzard | 6 | Son | None | Maryland |
| 23 | John C Blizzard | 4 | Son | None | Maryland |
| 24 | Dorothy V Blizzard | 2 | Daughter | None | Maryland |
| 25 | John E Peeling | 34 | Head | Heeder | Maryland |
| 26 | Marina S Peeling | 34 | Wife-H | None | Maryland |
| 27 | Alice C Peeling | 3 | Daughter | None | Maryland |
| 28 | Rosana Calder | 65 | Aunt | None | Maryland |
| 29 | James Peeling | 62 | Father | Farmer | Maryland |
| 30 | Thomas W Ireland | 71 | Head | Farmer | Maryland |
| 31 | Fannie F Ireland | 70 | Wife-H | None | Maryland |
| 32 | Joseph E Stockdale | 70 | Head | Farmer | Maryland |
| 33 | Betty E Stockdale | 72 | Wife-H | None | Maryland |
| 34 | Maud H Horner | 49 | Head | Merchant | Maryland |
| 35 | Edith S Horner | 47 | Sister | None | Maryland |
| 36 | Thomas Crooks | 60 | Head | Laborer | Maryland |
| 37 | Johanna Crooks | 75 | Wife-H | None | Maryland |
| 38 | Hanna Loretta Crooks | 39 | Daughter | None | Maryland |
| 39 | Rebecca J Beam | 69 | Head-H | None | Maryland |
| 40 | Manassa Beam | 73 | Husband | Blacksmith | Maryland |
| 41 | Etta E Bosley | 36 | Daughter | Teacher | Maryland |
| 42 | Mary Bell | 23 | Boarder | Teacher | Maryland |
| 43 | Solomon J Frazier | 59 | Head | Farmer | Maryland |
| 44 | George F Frazier | 47 | Brother | Laborer | Maryland |
| 45 | Agnes S Frazier | 42 | Sister | None | Maryland |
| 46 | Roy C Cullison | 48 | Head | Machinist | Pennsylvania |
| 47 | Charlotte H Cullison | 37 | Wife-H | None | Maryland |
| 48 | Alpha B Cullison | 15 | Son-H | None | Maryland |
| 49 | G Harry Bange | 52 | Head | Merchant | Maryland |
| 50 | Staley S Bange | 48 | Wife-H | None | Pennsylvania |
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)