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William Welch — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Merrimack-County, New Hampshire
Our Model Tree links this William Welch across the 1910, 1920, 1930 and 1940 US Censuses in Merrimack-County, New Hampshire (XGBoost, ~Confirmed) — first a head (b.~1875), then head of a 6-person household.
Age 65
b. ~1875
Male
Head
Born: New Hampshire
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Merrimack-County, New Hampshire |
| Surname | WELCH |
| Given Name | WILLIAM H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 65 |
| Marital Status | Married |
| Birthplace | New Hampshire |
| 1935 Residence (City) | Concord city |
| 1935 Residence (County) | Merrimack |
| Additional Details | |
| Occupation | janitor |
| Industry | church properties |
| Class of Worker | PW |
| Hours Worked | 84 |
| Income (1939) | 1400 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
| Occupation | Janitor |
| Township / Ward | Concord City |
| Est. Birth Year | ~1875 |
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 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| U Swain | Daughter | — | 44 | ~1896 |
| Dorothea Welch | Daughter | — | 28 | ~1912 |
| William Welch | Head | — | 65 | ~1875 |
| Granville Swain | Other | — | 45 | ~1895 |
| Ann Swain | Other | — | 8 | ~1932 |
| Honora Welch | Spouse | — | 69 | ~1871 |
Census Appearances
1910
Merrimack, New …
Head, age 36
Merrimack, New Hampshire · implied b. ~1874 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Welch |
| Given Name | William H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | New Hampshire |
| Years Married | 2 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Machinist |
| Industry | Railroad |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
1920
Merrimack, New …
Head, age 45
Merrimack, New Hampshire · implied b. ~1875 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Welch |
| Given Name | William H |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | New Hampshire |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Machinist |
| Industry | Steam Railroad |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
1930
Merrimack, New …
Head, age 55
Merrimack, New Hampshire · implied b. ~1875 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Welch |
| Given Name | William H |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | New Hampshire |
| Age at First Marriage | 35 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | New Hampshire |
| Occupation | Janitor |
| Industry | Buildings |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 16.00 |
| Radio Set | R |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
1940
Merrimack-County, New …
Head, age 65
Merrimack-County, New Hampshire · implied b. ~1875 — 6 household members
| Surname | WELCH |
| Given Name | WILLIAM H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 65 |
| Marital Status | Married |
| Birthplace | New Hampshire |
| 1935 Residence (City) | Concord city |
| 1935 Residence (County) | Merrimack |
| Occupation | janitor |
| Industry | church properties |
| Class of Worker | PW |
| Hours Worked | 84 |
| Income (1939) | 1400 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
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 William Welch across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
William Welch
Head · 1940 · age 65 · b. ~1875 · New Hampshire
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Merrimack-County, New Hampshire
Open full size
1940 US Federal Census — Merrimack-County, New Hampshire
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02293-00675)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | William H. Welch THIS PERSON | 65 | Head | Janitor | New Hampshire |
| 2 | Honora X. Welch | 69 | Wife | — | New Hampshire |
| 3 | Dorothea F. Welch | 28 | Daughter | Tabulator | New Hampshire |
| 4 | Granville O. Swain | 45 | Son-in-law | Attendant | New Hampshire |
| 5 | U. Jeannette Swain | 44 | Daughter | — | New Hampshire |
| 6 | Ann C. Swain | 8 | Grand-daughter | — | New Hampshire |
| 7 | James J. Lane | 72 | Head | — | Eire |
| 8 | Mary T. Lane | 65 | Wife | Landlady | Eire |
| 9 | William H. Lane | 69 | Brother | — | Eire |
| 10 | Kemp H. Burnett | 28 | Lodger | Dairyman | New Hampshire |
| 11 | Donald C. Stahlman | 23 | Lodger | Driller | Pennsylvania |
| 12 | Thomas T. Gallagher | 30 | Lodger | Driller | New Hampshire |
| 13 | Frederick Blanchard | 24 | Lodger | Blacksmith | Massachusetts |
| 14 | Wilfred Lizotte | 38 | Lodger | Auto Mechanic | New Hampshire |
| 15 | John W. Mcloy | 53 | Head | Granite Cutter | New Hampshire |
| 16 | Elizabeth I. Mcloy | 50 | Wife | — | Maine |
| 17 | Mary B. Mcloy | 22 | Daughter | Grader | New Hampshire |
| 18 | Margaret C. Mcloy | 21 | Daughter | Typist | New Hampshire |
| 19 | Edward F. Mcloy | 20 | Son | Pressman'S Helper | New Hampshire |
| 20 | Richard J. Mcloy | 18 | Son | — | New Hampshire |
| 21 | Ann B. Mcloy | 17 | Daughter | — | New Hampshire |
| 22 | John H. Mcloy | 16 | Son | — | New Hampshire |
| 23 | Winifred C. Mcloy | 14 | Daughter | — | New Hampshire |
| 24 | Jeannette E. Mcloy | 11 | Daughter | — | New Hampshire |
| 25 | Teresa E. Mcloy | 8 | Daughter | — | New Hampshire |
| 26 | Paul Farwell | 5 | Ward | — | Massachusetts |
| 27 | Earl W. Pluff | 30 | Head | Machine Operator | Massachusetts |
| 28 | Margaret A. Pluff | 31 | Wife | — | New Hampshire |
| 29 | Madeleine A. Pluff | 8 | Daughter | — | New Hampshire |
| 30 | James F. Mcdonald | 44 | Head | Caretaker | New Hampshire |
| 31 | Adah I. Mcdonald | 26 | Wife | — | Massachusetts |
| 32 | James F. Mcdonald | 7 | Son | — | Massachusetts |
| 33 | M. Irene Mcdonald | 3 | Daughter | — | New Hampshire |
| 34 | Theodore N. Floros | 28 | Head | Waiter | Maine |
| 35 | Leona M. Floros | 24 | Wife | Waitress | Indiana |
| 36 | Louise Hart | 54 | Head | — | New Hampshire |
| 37 | Mary L. Hart | 38 | Daughter | Typist | New Hampshire |
| 38 | Wilfred N. Hart | 20 | Son | Gathering Machine Helper | New Hampshire |
| 39 | Richard H. Hart | 23 | Son | Folding Machine Helper | New Hampshire |
| 40 | Irene M. Hart | 22 | Daughter-in-law | Waitress | New Hampshire |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 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)