MD
Mary Dempsey — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Suffolk, Massachusetts
Our Model Tree links this Mary Dempsey across the 1910 and 1920 US Censuses in Suffolk, Massachusetts (XGBoost, ~Confirmed) — first a spouse (b.~1859), then head of a 9-person household.
Age 61
b. ~1859
Female
Spouse
Born: Ireland
Married
1920 Census Record Details
| Census Year | 1920 |
| Location | Suffolk, Massachusetts |
| Surname | Dempsey |
| Given Name | Mary |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 61 |
| Marital Status | Married |
| Birthplace | Ireland |
| Year of Immigration | 1870 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Irish |
| Birth Country | Ireland |
| Year of Naturalization | 1876 |
| Birthplace (normalized) | ireland |
| Township / Ward | Chelsea City |
| Est. Birth Year | ~1859 |
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 1920 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Walter Dempsey | Son | — | 22 | ~1898 |
| James Dempsey | Head | — | 69 | ~1851 |
| Leonard Dempsey | Son | — | 38 | ~1882 |
| Edward Dempsey | Son | — | 31 | ~1889 |
| William Dempsey | Son | — | 20 | ~1900 |
| Margaret Dempsey | Daughter | — | 29 | ~1891 |
| Grace Dempsey | Daughter | — | 23 | ~1897 |
| Mary Dempsey | Spouse | — | 61 | ~1859 |
| Christina Dempsey | Daughter | — | 25 | ~1895 |
Census Appearances
1910
Suffolk, Massachusetts
Other, age 50
Suffolk, Massachusetts · implied b. ~1860 — 50 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dempsey |
| Given Name | Mary |
| Relationship to Head | Inmate |
| Sex | F |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Ireland |
| Children Born | 0 |
| Children Living | 0 |
| Year of Immigration | 1870 |
| Naturalization Status | Alien |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Laundress |
| Industry | In Laundry |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1920
Suffolk, Massachusetts
Spouse, age 61
Suffolk, Massachusetts · implied b. ~1859 — 9 household members
| Surname | Dempsey |
| Given Name | Mary |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 61 |
| Marital Status | Married |
| Birthplace | Ireland |
| Year of Immigration | 1870 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Irish |
| Birth Country | Ireland |
| Year of Naturalization | 1876 |
| 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 Mary Dempsey across 2 US Census years (1910 and 1920) in Suffolk, Massachusetts, using XGBoost record linkage.
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This person
Anchor record
Mary Dempsey
Spouse · 1920 · age 61 · b. ~1859 · Massachusetts
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1920 US Federal Census — Suffolk, Massachusetts
Open full size
1920 US Federal Census — Suffolk, Massachusetts
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu743unit:0581)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | George Dunham | 13 | son | — | New Hampshire |
| 52 | Henry James Durand | 43 | head | — | New York |
| 53 | Edward Durand | 23 | son | — | Massachusetts |
| 54 | John Durand | 19 | son | Printer | Massachusetts |
| 55 | Benjamin Durand | 17 | son | Rubber Worker | Massachusetts |
| 56 | Henry Durand | 15 | son | Shoe Worker | Massachusetts |
| 57 | Beatrice Durand | 12 | daughter | Shoe Worker | Massachusetts |
| 58 | Stanley Durand | 9 | son | — | Massachusetts |
| 59 | William Durand | 7 | son | — | Massachusetts |
| 60 | Fred Durand | 4 | son | — | Massachusetts |
| 61 | James Dempsey | 69 | head | — | Ireland |
| 62 | Mary Dempsey THIS PERSON | 61 | wife | — | Ireland |
| 63 | Edward Dempsey | 31 | son | Clerk | Massachusetts |
| 64 | Leonard Dempsey | 38 | son | — | Massachusetts |
| 65 | Margaret Dempsey | 29 | daughter | Yardmaster | Massachusetts |
| 66 | Christina Dempsey | 25 | daughter | Clerk | Massachusetts |
| 67 | William D Dempsey | 20 | son | Clerk | Massachusetts |
| 68 | Walter Dempsey | 22 | son | Bookkeeper | Massachusetts |
| 69 | Grace Dempsey | 23 | daughter | — | Massachusetts |
| 70 | William J Dwyer | 27 | head | Clerk | Massachusetts |
| 71 | Josephine Dwyer | 23 | wife | Clerk | Massachusetts |
| 72 | Arthur Dwyer | 5 | son | Stock Clerk | Massachusetts |
| 73 | Edwin Dwyer | 32 | brother | — | Massachusetts |
| 74 | Annie King | 60 | mother-in-law | — | Massachusetts |
| 75 | William Richards | 44 | head | Operator | England |
| 76 | Mary Richards | 39 | wife | — | Prince Edward Island |
| 77 | Nicholas Meagher | 16 | brother-in-law | Carpenter | Prince Edward Island |
| 78 | Margaret Richards | 9 | daughter | — | Massachusetts |
| 79 | Mary Richards | 8 | daughter | Shoe Worker | Massachusetts |
| 80 | Walter Richards | 7 | son | None | Massachusetts |
| 81 | Alice Richards | 5 | daughter | None | Massachusetts |
| 82 | Irene Richards | 3 | daughter | None | Massachusetts |
| 83 | Mildred Richards | 1 | daughter | None | Massachusetts |
| 84 | Adolf Richards | 0 | son | None | Massachusetts |
| 85 | William Mccolgan | 38 | head | None | Massachusetts |
| 86 | Jennie Mccolgan | 29 | wife | Auto Driver | Massachusetts |
| 87 | Mildred F Mccolgan | 8 | daughter | — | Massachusetts |
| 88 | Elmer Mccolgan | 6 | son | — | Massachusetts |
| 89 | William Mccolgan | 5 | son | — | Massachusetts |
| 90 | Ethel Mccolgan | 3 | daughter | — | Massachusetts |
| 91 | Annie Grady | 52 | head | — | Massachusetts |
| 92 | Thomas Casey | 35 | son | Proprietor | Massachusetts |
| 93 | John Grady | 30 | son | Proprietor | Massachusetts |
| 94 | Alice Grady | 32 | daughter | Clerk | Massachusetts |
| 95 | Ethel Southart | 25 | daughter | — | Massachusetts |
| 96 | James Southart | 4 | grandson | — | Massachusetts |
| 97 | William Southart | 2 | grandson | — | Massachusetts |
| 98 | Edward Mclean | 47 | head | Printer | Canada |
| 99 | Clara Mclean | 42 | wife | — | England |
| 100 | Louis E White | 26 | son-in-law | Sailor | England |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 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)