MC
Mary Carroll — 1930 US Census Record
Linked across censuses1930 United States Federal Census · King, Washington
Our Model Tree links this Mary Carroll across the 1920, 1930 and 1940 US Censuses in King, Washington (XGBoost, ~Confirmed) — first a head (b.~1853), then head of a 3-person household.
Age 77
b. ~1853
Female
Head
Born: Maryland
Widowed
1930 Census Record Details
| Census Year | 1930 |
| Location | King, Washington |
| Surname | Carroll |
| Given Name | Mary A. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 77 |
| Marital Status | Widowed |
| Birthplace | Maryland |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Additional Details | |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 22 |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Seattle City |
| Est. Birth Year | ~1853 |
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.
3 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Edna Carroll | Daughter | — | 36 | ~1894 |
| Bertha Carroll | Daughter | — | 40 | ~1890 |
| Mary Carroll | Head | — | 77 | ~1853 |
Census Appearances
1920
King, Washington
Head, age 67
King, Washington · implied b. ~1853 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carroll |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 67 |
| Marital Status | Widowed |
| Birthplace | Maryland |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
King, Washington
Head, age 77
King, Washington · implied b. ~1853 — 3 household members
| Surname | Carroll |
| Given Name | Mary A. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 77 |
| Marital Status | Widowed |
| Birthplace | Maryland |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 22 |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
King-County, Washington
Other, age 87
King-County, Washington · implied b. ~1853 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carrall |
| Given Name | Mary Ann |
| Relationship to Head | Mother |
| Sex | F |
| Color / Race | White |
| Age | 87 |
| Marital Status | Widowed |
| Birthplace | Maryland |
| 1935 Residence (City) | Seattle City |
| 1935 Residence (County) | King |
| Income (1939) | 0 |
| Highest Grade | 7 |
| 1935 Residence | Same place |
| 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 Mary Carroll across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Carroll
Head · 1930 · age 77 · b. ~1853 · Washington
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — King, Washington
Open full size
1930 US Federal Census — King, Washington
Page Contents
50 people indexed on this census page (ia:1930:15thcensus2494unit:0625)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Justice E. King | 56 | Head | Street Dept | Kansas |
| 2 | Mary King | 57 | Wife | — | Canada-English |
| 3 | Gladys R. King | 8 | Daughter | — | Washington |
| 4 | Sarah Mcleod | 62 | Head | — | Minnesota |
| 5 | Kathleen Mcleod | 22 | Daughter | Nurse | Canada-English |
| 6 | Nora Mcleod | 18 | Daughter | Stenographer | Canada-English |
| 7 | Lillian Holtzinger | 26 | Daughter | Operator | Canada-English |
| 8 | Helen Holtzinger | 6 | Grand-daughter | — | Washington |
| 9 | Ragnvald Flakstad | 58 | Head | Carpenter | Norway |
| 10 | Mina H. Flakstad | 37 | Wife | — | New York |
| 11 | Dorothy H. Flakstad | 3 | Daughter | — | Washington |
| 12 | John Tressider | 39 | Head | Blacksmith | England |
| 13 | Ada F. Tressider | 33 | Wife | — | England |
| 14 | George H. Beaumont | 40 | Boarder | Laborer | California |
| 15 | John E. Flatbo | 51 | Head | Owner | Norway |
| 16 | Ingerd Flatbo | 47 | Wife | — | Norway |
| 17 | Ingrid Flatbo | 15 | Daughter | — | Washington |
| 18 | Eris Flatbo | 20 | Son | — | Washington |
| 19 | Eris W. Carleton | 68 | Head | — | Sweden |
| 20 | Agnes A. Carleton | 64 | Wife | — | England |
| 21 | William H. Carleton | 21 | Son | — | Washington |
| 22 | Ralph W. Clark | 40 | Head | Plumber & Steamfitter | Kansas |
| 23 | Edna S. Clark | 41 | Wife | — | Pennsylvania |
| 24 | Martha I. Clark | 14 | Daughter | — | Washington |
| 25 | Ralph W. Clark | 12 | Son | — | Washington |
| 26 | Dorothy E. Clark | 9 | Daughter | — | Washington |
| 27 | Ida M. Stewart | 52 | Head | — | New York |
| 28 | Harold E. Stewart | 24 | Son | Maintenance Man | Minnesota |
| 29 | Isabel H. Stewart | 24 | Daughter-in-law | — | Washington |
| 30 | James A. Stewart | 5 | Grandson | — | Washington |
| 31 | Richard L. Stewart | 1 | Grandson | — | Washington |
| 32 | James L. Ricketson | 79 | Father | — | New York |
| 33 | Sarah Ricketson | 80 | Mother | — | Vermont |
| 34 | Verne A. Nelson | 29 | Boarder | Sheet Metal | Nebraska |
| 35 | Ernest Ivey | 36 | Head | Mechanic | Montana |
| 36 | Ione Ivey | 32 | Wife | — | Maryland |
| 37 | Helen B. Ivey | 8 | Daughter | — | Montana |
| 38 | Milton C. Ross | 40 | Head | Timber Cruiser | Canada-English |
| 39 | Dorothy Ross | 38 | Wife | — | England |
| 40 | Mary P. Ross | 17 | Daughter | — | England |
| 41 | Mary A. Carroll THIS PERSON | 77 | Head | — | Maryland |
| 42 | Bertha Carroll | 40 | Daughter | Stenographer | Colorado |
| 43 | Edna Carroll | 36 | Daughter | Clerk | Colorado |
| 44 | Peter F. C. Hayes | 52 | Head | Floor Manager | Canada-English |
| 45 | Margaret J. Hayes | 66 | Sister | Salesman | Canada-English |
| 46 | Mary A. Hayes | 63 | Sister | — | Canada-English |
| 47 | Bertha Lofthung | 58 | Head | Starcher | Norway |
| 48 | Sadie B. Lofthung | 28 | Daughter | Stenographer | Wisconsin |
| 49 | Theodore S. Lofthung | 20 | Son | Office Boy | Wisconsin |
| 50 | Claude S. Hepeman | 36 | Head | Letter Carrier | Washington |
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)