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John Monahan — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Essex, Massachusetts
Our Model Tree links this John Monahan across the 1920 and 1930 US Censuses in Essex, Massachusetts (XGBoost, ~Confirmed) — first a head (b.~1877), then head of a 9-person household.
Age 53
b. ~1877
Male
Head
Born: Ireland
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Essex, Massachusetts |
| Surname | Monahan |
| Given Name | John |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Ireland |
| Age at First Marriage | 21 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Occupation | Plumber helper |
| Industry | Plumber |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Home Value / Rent | 28 |
| Radio Set | R |
| Veteran | Yes |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Occupation | Plumber Helper |
| Township / Ward | Lawrence City |
| Est. Birth Year | ~1877 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Irene Monahan | Daughter | — | 12 | ~1918 |
| Cecelia Monahan | Daughter | — | 26 | ~1904 |
| John Monahan | Head | — | 53 | ~1877 |
| James Monahan | Son | — | 28 | ~1902 |
| Gloria Monahan | Daughter | — | 7 | ~1923 |
| John Monahan | Son | — | 21 | ~1909 |
| Patricia Monahan | Daughter | — | 17 | ~1913 |
| Frank Monahan | Son | — | 24 | ~1906 |
| Mary Monahan | Spouse | — | 52 | ~1878 |
Census Appearances
1920
Suffolk, Massachusetts
Other, age 42
Suffolk, Massachusetts · implied b. ~1878 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Monahan |
| Given Name | John |
| Relationship to Head | Lodger |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Single |
| Birthplace | Ireland |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Butcher |
| Industry | Retail shop |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Irish |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1930
Essex, Massachusetts
Head, age 53
Essex, Massachusetts · implied b. ~1877 — 9 household members
| Surname | Monahan |
| Given Name | John |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Ireland |
| Age at First Marriage | 21 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Plumber helper |
| Industry | Plumber |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Home Value / Rent | 28 |
| Radio Set | R |
| Veteran | Yes |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
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 Monahan across 2 US Census years (1920 and 1930) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Monahan
Head · 1930 · age 53 · b. ~1877 · Massachusetts
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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 — Essex, Massachusetts
Open full size
1930 US Federal Census — Essex, Massachusetts
Page Contents
50 people indexed on this census page (ia:1930:massachusettscensus00reel898:1104)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Edward Thibodeau | 8 | son | None | Massachusetts |
| 52 | Doris Thibodeau | 5 | daughter | None | Massachusetts |
| 53 | John P Arsenault | 54 | head | Laborer | Canada French |
| 54 | Felicite Arsenault | 52 | wife | None | Canada French |
| 55 | Angeline Arsenault | 22 | daughter | Doffing | Canada French |
| 56 | Jacqueline Leblanc | 19 | daughter | None | Canada French |
| 57 | Vitaline Arsenault | 18 | daughter | Cleaner | Canada French |
| 58 | Emile Arsenault | 16 | son | Yarn Boy | Canada French |
| 59 | Rose Arsenault | 14 | daughter | None | Canada French |
| 60 | Joseph Jalbert | 41 | head | Section Hand | Canada French |
| 61 | Minerva Jalbert | 40 | wife | Spinner | Maine |
| 62 | Leo Jalbert | 19 | son | None | Massachusetts |
| 63 | Lillian Jalbert | 17 | daughter | None | Massachusetts |
| 64 | Laura Jalbert | 16 | daughter | None | Massachusetts |
| 65 | Rita Jalbert | 14 | daughter | None | Massachusetts |
| 66 | Rose Jalbert | 10 | daughter | None | Massachusetts |
| 67 | Stella Jalbert | 9 | daughter | None | Massachusetts |
| 68 | Robert Jalbert | 6 | son | None | Massachusetts |
| 69 | Ralph Bazin | 44 | head | Dyer & Finisher | Massachusetts |
| 70 | Rose Bazin | 39 | wife | None | Massachusetts |
| 71 | Lucille Bazin | 7 | daughter | None | Massachusetts |
| 72 | Norman Bazin | 4 | son | None | Massachusetts |
| 73 | Edward Arnold | 45 | head | Laborer | Canada English |
| 74 | Jennie Arnold | 40 | wife | Drawing | Canada English |
| 75 | Wilfred Arnold | 20 | son | Laborer | Massachusetts |
| 76 | Burton Arnold | 18 | son | Maker | Massachusetts |
| 77 | Raymond Arnold | 17 | son | Twister | Massachusetts |
| 78 | Margaret Arnold | 15 | daughter | None | Massachusetts |
| 79 | Rita Arnold | 13 | daughter | None | Massachusetts |
| 80 | Annie Arnold | 10 | daughter | None | Massachusetts |
| 81 | James Arnold | 8 | son | None | Massachusetts |
| 82 | Edward Arnold | 6 | son | None | Massachusetts |
| 83 | John Monahan THIS PERSON | 53 | head | Plumber Helper | Ireland |
| 84 | Mary Monahan | 52 | wife | None | Canada French |
| 85 | James Monahan | 28 | son | Twister | Massachusetts |
| 86 | Cecelia Monahan | 26 | daughter | Twister | Massachusetts |
| 87 | Frank Monahan | 24 | son | Plumber Helper | Massachusetts |
| 88 | John Monahan | 21 | son | Trackman | Massachusetts |
| 89 | Patricia Monahan | 17 | daughter | Twister | Massachusetts |
| 90 | Irene Monahan | 12 | daughter | None | Massachusetts |
| 91 | Gloria Monahan | 7 | daughter | None | Massachusetts |
| 92 | Mary Thibodeau | 68 | head | None | Canada French |
| 93 | Joseph A Thibodeau | 40 | son | Carpenter | Canada French |
| 94 | Frank Thibodeau | 30 | son | Brush Maker | Canada French |
| 95 | Winifred Arsenault | 16 | granddaughter | Inspector | Massachusetts |
| 96 | Freemond Ouellette | 57 | head | Laborer | Canada French |
| 97 | Kate Ouellette | 44 | wife | Drawing | Canada French |
| 98 | Gilbert Breton | 75 | head | None | Canada French |
| 99 | Pauline Breton | 53 | wife | None | Canada French |
| 100 | Fernand Lafitte | 54 | head | Cabinet Maker | Belgium |
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)