MH
Mary Harmon — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Cumberland, Maine
Our Model Tree links this Mary Harmon across the 1920 and 1930 US Censuses in Cumberland, Maine (XGBoost, ~Confirmed) — first a spouse (b.~1890), then head of a 9-person household.
Age 40
b. ~1890
Female
Spouse
Born: Maine
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Cumberland, Maine |
| Surname | Harmon |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Maine |
| Age at First Marriage | 16 |
| Father's Birthplace | Maine |
| Mother's Birthplace | Irish Free State |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Maine |
| Birth Country | United States |
| Birthplace (normalized) | maine |
| Township / Ward | Portland City |
| Est. Birth Year | ~1890 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Eleanor Harmon | Daughter | — | 13 | ~1917 |
| Agnes Harmon | Daughter | — | 8 | ~1922 |
| Dorothea Harmon | Daughter | — | 6 | ~1924 |
| Thelma Harmon | Daughter | — | 8 | ~1922 |
| Charles Harmon | Head | — | 51 | ~1879 |
| Salim Hajjar | Other | — | 39 | ~1891 |
| Harland Harmon | Son | — | 23 | ~1907 |
| Albert Harmon | Son | — | 12 | ~1918 |
| Mary Harmon | Spouse | — | 40 | ~1890 |
Census Appearances
1920
Cumberland, Maine
Spouse, age 30
Cumberland, Maine · implied b. ~1890 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harmon |
| Given Name | Mary B |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Maine |
| Father's Birthplace | Maine |
| Mother's Birthplace | Ireland |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maine |
| Birth Country | United States |
| Birthplace (normalized) | maine |
1930
Cumberland, Maine
Spouse, age 40
Cumberland, Maine · implied b. ~1890 — 9 household members
| Surname | Harmon |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Maine |
| Age at First Marriage | 16 |
| Father's Birthplace | Maine |
| Mother's Birthplace | Irish Free State |
| Can Read/Write | Yes |
| Birth State | Maine |
| Birth Country | United States |
| Birthplace (normalized) | maine |
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 Harmon across 2 US Census years (1920 and 1930) in Cumberland, Maine, using XGBoost record linkage.
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This person
Anchor record
Mary Harmon
Spouse · 1930 · age 40 · b. ~1890 · Maine
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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 — Cumberland, Maine
Open full size
1930 US Federal Census — Cumberland, Maine
Page Contents
50 people indexed on this census page (ia:1930:15thcensus830unit:0914)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Thomas Sesto | 34 | Head | Laborer | Italy |
| 2 | Mary Sesto | 31 | Wife | — | Italy |
| 3 | Genevino Sesto | 8 | Son | — | Maine |
| 4 | Mary Sesto | 7 | Daughter | — | Maine |
| 5 | Pasquale Sesto | 3 | Son | — | Maine |
| 6 | Charles Harmon | 51 | Head | Box Maker | Maine |
| 7 | Mary Harmon THIS PERSON | 40 | Wife | — | Maine |
| 8 | Harland P Harmon | 23 | Son | Carpenter | Maine |
| 9 | Eleanor V Harmon | 13 | Daughter | — | Maine |
| 10 | Albert K Harmon | 12 | Son | — | Maine |
| 11 | Thelma P Harmon | 8 | Daughter | — | Maine |
| 12 | Agnes M Harmon | 8 | Daughter | — | Maine |
| 13 | Dorothea R Harmon | 6 | Daughter | — | Maine |
| 14 | Salim Hajjar | 39 | Lodger | Order Cook | Syria |
| 15 | Henry J Lynch | 33 | Head | Checker | Maine |
| 16 | Ethel G Lynch | 30 | Wife | — | Maine |
| 17 | Henry Lynch | 10 | Son | — | Maine |
| 18 | Harold E Lynch | 9 | Son | — | Maine |
| 19 | Arlene M Lynch | 8 | Daughter | — | Maine |
| 20 | Phyllis L Lynch | 6 | Daughter | — | Maine |
| 21 | William R Lynch | 4 | Son | — | Maine |
| 22 | Richard Lynch | 2 | Son | — | Maine |
| 23 | Emma Nutting | 70 | Mother-in-law | Nurse | Canada-English |
| 24 | William E Hensley | 36 | Head | Janitor | Illinois |
| 25 | Esther P Hensley | 36 | Wife | — | Maine |
| 26 | Yvonne Hensley | 10 | Daughter | — | Maine |
| 27 | Dorothy P Hensley | 6 | Daughter | — | Maine |
| 28 | Shirley A Hensley | 5 | Daughter | — | Maine |
| 29 | Thelma P Hensley | 2 | Daughter | — | Maine |
| 30 | Donald E Hensley | 1 | Son | — | Maine |
| 31 | Fred Fillinger | 45 | Head | Carpenter | New York |
| 32 | Mabel A Fillinger | 40 | Wife | — | Norway |
| 33 | Raymond Fillinger | 17 | Son | — | Maine |
| 34 | Charlotte S Fillinger | 16 | Daughter | Inventory | Maine |
| 35 | Katherine M Fillinger | 15 | Daughter | — | Maine |
| 36 | Eunice R Fillinger | 3 | Daughter | — | Maine |
| 37 | Alberta C Fillinger | 1 | Daughter | — | Maine |
| 38 | Edward P Quinn | 41 | Head | Truckman | Maine |
| 39 | Catherine Quinn | 41 | Wife | — | Maine |
| 40 | Edward P Jr Quinn | 14 | Son | — | Maine |
| 41 | Mackenzie John P Quinn | 23 | Step-son | Driver Truck | Maine |
| 42 | Elizabeth C Quinn | 21 | Daughter | — | Maine |
| 43 | Annie A Quinn | 77 | Head | — | Canada-English |
| 44 | William F Quinn | 53 | Son | Laborer | Maine |
| 45 | Joseph H Quinn | 52 | Son | — | Maine |
| 46 | Hugh E Quinn | 21 | Son | Laborer | Maine |
| 47 | George E Dunham | 62 | Head | Salesman | Maine |
| 48 | Celia M Dunham | 60 | Wife | — | Maine |
| 49 | George K Dunham | 19 | Son | Stock Teller | Maine |
| 50 | Mary E O'Brien | 44 | Head | — | Maine |
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)