JM
John Murdock — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Multnomah, Oregon
Our Model Tree links this John Murdock across the 1930 and 1940 US Censuses in Multnomah, Oregon (XGBoost, ~Confirmed) — first a head (b.~1882), then head of a 4-person household.
Age 48
b. ~1882
Male
Head
Born: Oregon
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Multnomah, Oregon |
| Surname | Murdock |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Oregon |
| Age at First Marriage | 22 |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Iowa |
| Additional Details | |
| Occupation | Helper |
| Industry | Drydock |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | $2400 |
| Radio Set | R |
| Veteran | No |
| Birth State | Oregon |
| Birth Country | United States |
| Birthplace (normalized) | oregon |
| Occupation | Helper |
| Township / Ward | Portland City |
| Est. Birth Year | ~1882 |
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.
4 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Murdock | Head | — | 48 | ~1882 |
| Martha Murdock | Son | — | 9 | ~1921 |
| Dorothy Murdock | Daughter | — | 17 | ~1913 |
| Lydia Murdock | Spouse | — | 50 | ~1880 |
Census Appearances
1930
Multnomah, Oregon
Head, age 48
Multnomah, Oregon · implied b. ~1882 — 4 household members
| Surname | Murdock |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Oregon |
| Age at First Marriage | 22 |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Iowa |
| Occupation | Helper |
| Industry | Drydock |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | $2400 |
| Radio Set | R |
| Veteran | No |
| Birth State | Oregon |
| Birth Country | United States |
| Birthplace (normalized) | oregon |
1940
Multnomah-County, Oregon
Head, age 58
Multnomah-County, Oregon · implied b. ~1882 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Murdoch |
| Given Name | John W |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 58 |
| Marital Status | Married |
| Birthplace | Oregon |
| 1935 Residence (City) | Portland city |
| 1935 Residence (County) | Multnomah |
| Occupation | Dock operator |
| Industry | Dry Dock |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 1788 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Oregon |
| Birth Country | United States |
| Birthplace (normalized) | oregon |
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 Murdock across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Murdock
Head · 1930 · age 48 · b. ~1882 · Oregon
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Multnomah, Oregon
Open full size
1930 US Federal Census — Multnomah, Oregon
Page Contents
50 people indexed on this census page (ia:1930:15thcensus1954unit:0034)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | John Murdock THIS PERSON | 48 | Head | Helper | Oregon |
| 52 | Lydia Murdock | 50 | Wife | — | Iowa |
| 53 | Dorothy Murdock | 17 | Daughter | Labeler | Oregon |
| 54 | Martha Murdock | 9 | Son | — | Oregon |
| 55 | Lenore Caples | 71 | Head | — | California |
| 56 | Evelyn Sturdevant | 16 | Granddaughter | — | Minnesota |
| 57 | Michael Leg | 69 | Head | No Laborer | Ireland |
| 58 | Mary E. Wade | 62 | Head | — | Wisconsin |
| 59 | Alice L. Wade | 40 | Son | Stenographer | Oregon |
| 60 | Henry B. Dunkstury | 79 | Lodger | — | England |
| 61 | Sylvester Newman | 17 | Lodger | Laborer | Idaho |
| 62 | Merren Newman | 15 | Lodger | — | Idaho |
| 63 | William Garber | 41 | Lodger | Merchant | Oregon |
| 64 | Paul C. Quaken | 10 | Lodger | — | Oregon |
| 65 | Edward E. Purdy | 22 | Son | Accountant | New York |
| 66 | Alice A. Purdy | 20 | Son | — | New York |
| 67 | Lorenzen Wolf | 52 | Lodger | Farm Hand | Germany |
| 68 | Janet Adams | 67 | Head | — | Canada English |
| 69 | Catherine Adams | 57 | Sister | Teacher | Canada English |
| 70 | John C. Paxton | 29 | Boarder | Laborer | Oregon |
| 71 | Verna Paxton | 19 | Boarder | — | Oregon |
| 72 | Eli T. Coulson | 70 | Head | Plumber | Ohio |
| 73 | Minnie L. Coulson | 61 | Wife | — | Ohio |
| 74 | Rudolph R. Ridman | 39 | Head | Washerman | Russia |
| 75 | Gladys Ridman | 33 | Wife | Servant | Russia |
| 76 | Dora R. Ridman | 11 | Daughter | — | Canada English |
| 77 | Eleanor R. Ridman | 5 | Daughter | — | Oregon |
| 78 | Stanley G. Harper | 26 | Lodger | Salesman | England |
| 79 | — | None | — | — | — |
| 80 | — | None | — | — | — |
| 81 | — | None | — | — | — |
| 82 | — | None | — | — | — |
| 83 | — | None | — | — | — |
| 84 | — | None | — | — | — |
| 85 | — | None | — | — | — |
| 86 | — | None | — | — | — |
| 87 | — | None | — | — | — |
| 88 | — | None | — | — | — |
| 89 | — | None | — | — | — |
| 90 | — | None | — | — | — |
| 91 | — | None | — | — | — |
| 92 | — | None | — | — | — |
| 93 | — | None | — | — | — |
| 94 | — | None | — | — | — |
| 95 | — | None | — | — | — |
| 96 | — | None | — | — | — |
| 97 | — | None | — | — | — |
| 98 | — | None | — | — | — |
| 99 | — | None | — | — | — |
| 100 | — | None | — | — | — |
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)