MM
Mary Mcnulty — 1920 US Census Record
Model Tree available1920 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this Mary Mcnulty across the 1900, 1910 and 1920 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed), with identified parents Catherine — first a head (b.~1869), then head of a 4-person household.
Age 51
b. ~1869
Female
Head
Born: Ireland
Widowed
1920 Census Record Details
| Census Year | 1920 |
| Location | Middlesex, Massachusetts |
| Surname | McNulty |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 51 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Year of Immigration | 1886 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Birth Country | Ireland |
| Year of Naturalization | 1891 |
| Birthplace (normalized) | ireland |
| Township / Ward | Lowell City |
| Est. Birth Year | ~1869 |
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.
4 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Mcnulty | Head | — | 51 | ~1869 |
| John Mcnulty | Other | — | 36 | ~1884 |
| Gertrude Mcnulty | Daughter | — | 21 | ~1899 |
| Elizabeth Mcnulty | Other | — | 33 | ~1887 |
Census Appearances
1900
Middlesex, Massachusetts
Daughter, age 35
Middlesex, Massachusetts · implied b. ~1865 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McNulty |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 34 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Birth Month | Aug |
| Birth Year | 1865 |
| Year of Immigration | 1888 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Spooler Cotton Mill |
| Can Read | No |
| Can Write | No |
| Speaks English | Yes |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1910
Middlesex, Massachusetts
Other, age 44
Middlesex, Massachusetts · implied b. ~1866 — 20 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McNulty |
| Given Name | Mary |
| Relationship to Head | Lodger |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Year of Immigration | 1887 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Weaver cloth |
| Industry | Cotton Mill |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1920
Middlesex, Massachusetts
Head, age 51
Middlesex, Massachusetts · implied b. ~1869 — 4 household members
| Surname | McNulty |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 51 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Year of Immigration | 1886 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Birth Country | Ireland |
| Year of Naturalization | 1891 |
| 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 Mcnulty across 3 US Census years (1900, 1910 and 1920) in Middlesex, Massachusetts, using XGBoost record linkage. Identified parents: mother Catherine Loftus (~0.92 confidence). The pedigree spans 1 generation with 1 identified ancestor.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Catherine Loftus
b. ~1840
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Mcnulty
Head · 1920 · age 51 · b. ~1869 · Massachusetts
★ You are viewing this record
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
45 people indexed on this census page (ia:1920:14thcensusofpopu710unit:0994)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Mary Pereira | 26 | Wife | Weaver | Azores |
| 52 | Joseph Pereira | 1 | Son | — | Massachusetts |
| 53 | Joseph Silva | 37 | Head | Loom Fixer | Azores |
| 54 | Rosa Silva | 38 | Wife | — | Azores |
| 55 | Mary Silva | 15 | Daughter | Speeder | Massachusetts |
| 56 | Frank Silva | 12 | Son | — | Massachusetts |
| 57 | Annie Silva | 10 | Daughter | — | Massachusetts |
| 58 | John Silva | 7 | Son | — | Massachusetts |
| 59 | John Viana | 26 | Head | Box Maker | Portugal |
| 60 | Augusta Viana | 27 | Wife | Weaver | Portugal |
| 61 | John Viana | 7 | Son | — | Massachusetts |
| 62 | Joseph Viana | 1 | Son | — | Massachusetts |
| 63 | John Spindola | 22 | Head | Laborer | Azores |
| 64 | Linda Spindola | 21 | Wife | — | Azores |
| 65 | John Spindola | 1 | Son | — | Massachusetts |
| 66 | James Starr | 61 | Head | Machinist | Ireland |
| 67 | Margaret Starr | 58 | Wife | — | Ireland |
| 68 | Mary L Starr | 19 | Daughter | Operator | New York |
| 69 | Anthony J Griffin | 21 | Head | Spinner | Ireland |
| 70 | Mary M Griffin | 24 | Wife | — | Massachusetts |
| 71 | Robert M Griffin | 1 | Daughter | — | Massachusetts |
| 72 | Mary C Donahue | 31 | Head | Clerk | Massachusetts |
| 73 | Alice T Donahue | 26 | Sister | Spooler | Massachusetts |
| 74 | Frank Donahue | 24 | Brother | Machinist | Massachusetts |
| 75 | Helen E Donahue | 22 | Sister | Bookkeeper | Massachusetts |
| 76 | Peter Madden | 45 | Head | Proprietor | Ireland |
| 77 | Annie Madden | 37 | Wife | — | Ireland |
| 78 | Gertrude Madden | 11 | Daughter | — | Massachusetts |
| 79 | Grace M Madden | 8 | Daughter | — | Massachusetts |
| 80 | Joseph Azavedo | 39 | Head | Weaver | Azores |
| 81 | Mary Azavedo | 34 | Wife | Weaver | Azores |
| 82 | Manuel Jardim | 31 | Head | Laborer | Madeira |
| 83 | Mary Jardim | 28 | Wife | Spinner | Madeira |
| 84 | Albina Jardim | 5 | Daughter | — | Massachusetts |
| 85 | John O'Laughlin | 37 | Head | Cutter | England |
| 86 | Catherine O'Laughlin | 37 | Wife | Carder | England |
| 87 | Mary O'Laughlin | 12 | Daughter | — | Massachusetts |
| 88 | Elizabeth O'Laughlin | 8 | Daughter | — | Massachusetts |
| 89 | Catherine O'Laughlin | 5 | Daughter | — | Massachusetts |
| 90 | Mary Mcnulty THIS PERSON | 51 | Head | — | Ireland |
| 91 | Gertrude Mcnulty | 21 | Daughter | Binder | Massachusetts |
| 92 | John Mcnulty | 36 | Nephew | Laborer | England |
| 93 | Elizabeth Mcnulty | 33 | Niece | Operator | England |
| 94 | Mary Cordingly | 53 | Head | — | Ireland |
| 95 | John Cordingly | 20 | Son | Clerk | Massachusetts |
Pedigree Summary
Mary
Gen 1 · 1 parents
~0.92
Max depth 4 (1900–1950 window)
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)