MC
Mary Crowley — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this Mary Crowley across the 1910 and 1920 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1909), then head of a 10-person household.
Age 11
b. ~1909
Female
Daughter
Born: Massachusetts
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Middlesex, Massachusetts |
| Surname | Crowley |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Additional Details | |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Lowell City |
| Est. Birth Year | ~1909 |
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.
10 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Thomas Crowley | Son | — | ~1920 | |
| Thomas Crowley | Other | — | 73 | ~1847 |
| Leo Crowley | Son | — | 8 | ~1912 |
| Leo Crowley | Head | — | 32 | ~1888 |
| Mary Crowley | Other | — | 38 | ~1882 |
| Ella Crowley | Spouse | — | 30 | ~1890 |
| Catherine Crowley | Daughter | — | 3 | ~1917 |
| Mary Crowley | Daughter | — | 11 | ~1909 |
| Rita Crowley | Daughter | — | 5 | ~1915 |
| Alice Crowley | Daughter | — | 9 | ~1911 |
Census Appearances
1910
Middlesex, Massachusetts
Daughter, age
Middlesex, Massachusetts · implied b. ~1910 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Crowley |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1920
Middlesex, Massachusetts
Daughter, age 11
Middlesex, Massachusetts · implied b. ~1909 — 10 household members
| Surname | Crowley |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
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 Crowley across 2 US Census years (1910 and 1920) in Middlesex, Massachusetts, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Crowley
Daughter · 1920 · age 11 · b. ~1909 · Massachusetts
★ You are viewing this record
Sibling
Leo Crowley
Sibling · 1920 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Crowley
Sibling · 1920 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Crowley
Sibling · 1920 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Crowley
Sibling · 1920 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rita Crowley
Sibling · 1920 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1920 US Federal Census — Middlesex, Massachusetts
Open full size
1920 US Federal Census — Middlesex, Massachusetts
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu711unit:0481)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Charles Mcbride | 31 | Head | Machinist | Connecticut |
| 2 | Elizabeth Mcbride | 33 | Wife | — | Ireland |
| 3 | Charles Mcbride | 4 | Son | — | Massachusetts |
| 4 | Robert Mcbride | 1 | Son | — | Massachusetts |
| 5 | Thomas Cryan | 55 | Head | Painter | England |
| 6 | Julia Cryan | 55 | Wife | — | Ireland |
| 7 | Mary Cryan | 27 | Daughter | Stenographer | Massachusetts |
| 8 | Catherine Cryan | 25 | Daughter | Bookkeeper | Massachusetts |
| 9 | Leo Crowley | 32 | Head | Fireman | Massachusetts |
| 10 | Ella F. Crowley | 30 | Wife | — | Massachusetts |
| 11 | Mary Crowley THIS PERSON | 11 | Daughter | — | Massachusetts |
| 12 | Alice Crowley | 9 | Daughter | — | Massachusetts |
| 13 | Leo Crowley | 8 | Son | — | Massachusetts |
| 14 | Rita Crowley | 5 | Daughter | — | Massachusetts |
| 15 | Catherine Crowley | 3 | Daughter | — | Massachusetts |
| 16 | Thomas Crowley | 0 | Son | — | Massachusetts |
| 17 | Thomas Crowley | 73 | Father | — | Massachusetts |
| 18 | Mary E. Crowley | 38 | Sister | Teacher | Massachusetts |
| 19 | Bart Fernley | 34 | Head | Keeper | Massachusetts |
| 20 | Margaret J. Fernley | 35 | Wife | — | Massachusetts |
| 21 | Carrie M. Fernley | 64 | Mother | — | New Hampshire |
| 22 | Mary A. Riley | 31 | Lodger | Finisher | New York |
| 23 | Nathaniel Emery | 64 | Head | Teamster | Maine |
| 24 | Ella M. Emery | 40 | Wife | — | Canada |
| 25 | Henry Prescott | 58 | Head | Teamster | Scotland |
| 26 | Phoebe Prescott | 58 | Wife | Weft Inspector | Canada |
| 27 | George Balee | 26 | Head | Chauffeur | Massachusetts |
| 28 | Ellen Balee | 27 | Wife | — | Massachusetts |
| 29 | William Balee | 3 | Son | — | Massachusetts |
| 30 | George Balee | 3 | Son | — | Massachusetts |
| 31 | Edward Balee | 0 | Son | — | Massachusetts |
| 32 | Gertrude Johnson | 25 | Sister-in-law | Blacking | Massachusetts |
| 33 | Howard Whittier | 25 | Boarder | Machinist | New Hampshire |
| 34 | Estelle Whittier | 25 | Wife | — | New Hampshire |
| 35 | Evelyn Whittier | 3 | Daughter | — | New Hampshire |
| 36 | James A. Johnson | 28 | Head | Machinist | Massachusetts |
| 37 | Mary E. Johnson | 24 | Wife | — | Massachusetts |
| 38 | James Johnson | 5 | Son | — | Massachusetts |
| 39 | Ruth Johnson | 2 | Daughter | — | Massachusetts |
| 40 | Marion Johnson | 0 | Daughter | — | Massachusetts |
| 41 | Catherine Grady | 56 | Head | — | New Hampshire |
| 42 | Mabel Grady | 26 | Daughter | Spinner | Massachusetts |
| 43 | Joseph Grady | 22 | Son | Teamster | Massachusetts |
| 44 | Ethel Fayette | 24 | Lodger | Spinning | Massachusetts |
| 45 | Catherine Grady | 14 | Daughter | — | Massachusetts |
| 46 | Margaret Lewis | 57 | Head | Inspector | Canada |
| 47 | Nellie J. Lewis | 63 | Head | Cleaner | Massachusetts |
| 48 | Charles Mulholland | 42 | Head | Clerk | Massachusetts |
| 49 | Mary A. Mulholland | 41 | Wife | — | Massachusetts |
| 50 | Frances Mulholland | 12 | Daughter | — | Massachusetts |
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)