MO
Mary Olsen — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Suffolk, Massachusetts
Our Model Tree links this Mary Olsen across the 1930 and 1940 US Censuses in Suffolk, Massachusetts (XGBoost, ~Confirmed) — first a spouse (b.~1879), then head of a 6-person household.
Age 51
b. ~1879
Female
Spouse
Born: Canada English
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Suffolk, Massachusetts |
| Surname | Olsen |
| Given Name | Mary J. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Canada English |
| Naturalization Status | Naturalized |
| Year of Immigration | 1880 |
| Age at First Marriage | 29 |
| Father's Birthplace | Canada English |
| Mother's Birthplace | Canada English |
| Additional Details | |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | Canada |
| Birthplace (normalized) | canada english |
| Township / Ward | Boston City |
| Est. Birth Year | ~1879 |
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.
6 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Eleanor Olsen | Daughter | — | 15 | ~1915 |
| Joseph Olsen | Head | — | 48 | ~1882 |
| Mary Olsen | Spouse | — | 51 | ~1879 |
| Annie Olsen | Daughter | — | 18 | ~1912 |
| Ronald Olsen | Son | — | 13 | ~1917 |
| Jean Olsen | Daughter | — | 7 | ~1923 |
Census Appearances
1930
Suffolk, Massachusetts
Spouse, age 51
Suffolk, Massachusetts · implied b. ~1879 — 6 household members
| Surname | Olsen |
| Given Name | Mary J. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Canada English |
| Naturalization Status | Naturalized |
| Year of Immigration | 1880 |
| Age at First Marriage | 29 |
| Father's Birthplace | Canada English |
| Mother's Birthplace | Canada English |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | Canada |
| Birthplace (normalized) | canada english |
1940
Suffolk-County, Massachusetts
Other, age 61
Suffolk-County, Massachusetts · implied b. ~1879 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Olsen |
| Given Name | Maude C |
| Relationship to Head | Sister-in-law |
| Sex | F |
| Color / Race | White |
| Age | 61 |
| Marital Status | Single |
| Birthplace | Canada English |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Naturalization Status | Naturalized |
| Class of Worker | 0 |
| Highest Grade | S 7 |
| 1935 Residence | Same place |
| Birth Country | Canada |
| Birthplace (normalized) | canada english |
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 Olsen across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Olsen
Spouse · 1930 · age 51 · b. ~1879 · Massachusetts
★ 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 — Suffolk, Massachusetts
Open full size
1930 US Federal Census — Suffolk, Massachusetts
Page Contents
50 people indexed on this census page (ia:1930:massachusettscensus00reel948:0434)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Esther S. Ryan | 18 | Daughter | — | Massachusetts |
| 52 | William A. Ryan | 28 | Nephew | Brakeman | Massachusetts |
| 53 | Walter S. Ryan | 26 | Nephew | Truck Driver | Massachusetts |
| 54 | Samuel Tashjian | 57 | Head | Proprietor | Turkey A. |
| 55 | Nellie C. Tashjian | 48 | Wife | — | Turkey A. |
| 56 | George Tashjian | 19 | Son | — | Massachusetts |
| 57 | Bessie E. Keough | 34 | Head | — | Massachusetts |
| 58 | Grace E. Keough | 13 | Daughter | — | Massachusetts |
| 59 | Joseph H. Keough | 11 | Son | — | Massachusetts |
| 60 | Agnes Keough | 6 | Daughter | — | Massachusetts |
| 61 | Harry Keough | 3 | Son | — | Massachusetts |
| 62 | Joseph Olsen | 48 | Head | Longshoreman | Holland |
| 63 | Mary J. Olsen THIS PERSON | 51 | Wife | — | Canada English |
| 64 | Annie J. Olsen | 18 | Daughter | Plugger | Canada English |
| 65 | Eleanor G. Olsen | 15 | Daughter | — | Canada English |
| 66 | Ronald J. Olsen | 13 | Son | — | Canada English |
| 67 | Jean E. Olsen | 7 | Daughter | — | Canada English |
| 68 | George H. Wilson | 63 | Head | — | Massachusetts |
| 69 | Marion A. Wilson | 59 | Sister | Teacher | Massachusetts |
| 70 | Leo A. Jones | 27 | Head | Tinsmith | Maine |
| 71 | Catherine Jones | 20 | Wife | — | Irish Free State |
| 72 | Robert L. Jones | 0 | Son | — | Massachusetts |
| 73 | Christina Clark | 57 | Head | — | Irish Free State |
| 74 | John Faulkner | 57 | Boarder | Carpenter | Maine |
| 75 | Frank Faulkner | 60 | Boarder | Paper Hanger | Maine |
| 76 | Walter F. Gorman | 63 | Head | Pattern Maker | Massachusetts |
| 77 | Emma G. Gorman | 63 | Wife | — | Massachusetts |
| 78 | Harriet Finney | 63 | Boarder | Dressmaker | Massachusetts |
| 79 | Maud Stockwell | 63 | Boarder | Teacher | Massachusetts |
| 80 | Patrick J. Sexton | 56 | Head | Inspector | Irish Free State |
| 81 | Mary J. Sexton | 50 | Wife | — | Massachusetts |
| 82 | Mary B. Sexton | 28 | Daughter | Stenographer | Massachusetts |
| 83 | Frank J. Sexton | 27 | Son | Electrician | Massachusetts |
| 84 | Theresa A. Sexton | 25 | Daughter | Teacher | Massachusetts |
| 85 | James A. Sexton | 19 | Son | — | Massachusetts |
| 86 | John F. Sexton | 15 | Son | — | Massachusetts |
| 87 | Mary F. Sexton | 48 | Sister | Dressmaker | Massachusetts |
| 88 | Alexander F. Maclean | 57 | Head | Carpenter | Canada English |
| 89 | Mary A. Maclean | 57 | Wife | — | Canada English |
| 90 | Jessie Maclean | 27 | Daughter | Sales Clerk | Massachusetts |
| 91 | John A. Maclean | 25 | Son | Order Clerk | Massachusetts |
| 92 | Catherine Maclean | 23 | Daughter | Bookkeeper | Massachusetts |
| 93 | Angus Maclean | 21 | Son | Bank Clerk | Massachusetts |
| 94 | Jennie Maclean | 19 | Daughter | Cashier | Massachusetts |
| 95 | Christina Maclean | 17 | Daughter | Stenographer | Massachusetts |
| 96 | Margaret Maclean | 15 | Daughter | — | Massachusetts |
| 97 | Richard Morrissey | 52 | Head | Auto Mechanic | Irish Free State |
| 98 | Margaret Morrissey | 38 | Wife | — | Irish Free State |
| 99 | Richard Morrissey | 11 | Son | — | Massachusetts |
| 100 | John Morrissey | 9 | Son | — | Massachusetts |
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)