MH
Mary Hart — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Grafton, New Hampshire
Our Model Tree links this Mary Hart across the 1910, 1920 and 1930 US Censuses in Grafton, New Hampshire (XGBoost, ~Confirmed) — first a spouse (b.~1877), then head of a 5-person household.
Age 53
b. ~1877
Female
Spouse
Born: New Hampshire
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Grafton, New Hampshire |
| Surname | Hart |
| Given Name | Mary J |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | New Hampshire |
| Age at First Marriage | 23 |
| Father's Birthplace | Canada French |
| Mother's Birthplace | New Hampshire |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
| Township / Ward | Hanover Township |
| Est. Birth Year | ~1877 |
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.
5 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Marion Merrill | Daughter | — | 17 | ~1913 |
| William Hart | Head | — | 55 | ~1875 |
| Earl Hart | Son | — | 21 | ~1909 |
| Frederick Hart | Son | — | 19 | ~1911 |
| Mary Hart | Spouse | — | 53 | ~1877 |
Census Appearances
1910
Grafton, New …
Spouse, age 32
Grafton, New Hampshire · implied b. ~1878 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hart |
| Given Name | May A. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | New Hampshire |
| Years Married | 10 |
| Children Born | 5 |
| Children Living | 4 |
| Father's Birthplace | Canada-French |
| Mother's Birthplace | New Hampshire |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
1920
Grafton, New …
Spouse, age 42
Grafton, New Hampshire · implied b. ~1878 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hart |
| Given Name | Mary A. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | New Hampshire |
| Father's Birthplace | Canada |
| Mother's Birthplace | Canada |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
1930
Grafton, New …
Spouse, age 53
Grafton, New Hampshire · implied b. ~1877 — 5 household members
| Surname | Hart |
| Given Name | Mary J |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | New Hampshire |
| Age at First Marriage | 23 |
| Father's Birthplace | Canada French |
| Mother's Birthplace | New Hampshire |
| Can Read/Write | Yes |
| 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 Mary Hart across 3 US Census years (1910, 1920 and 1930) in Grafton, New Hampshire, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Hart
Spouse · 1930 · age 53 · b. ~1877 · New Hampshire
★ 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 — Grafton, New Hampshire
Open full size
1930 US Federal Census — Grafton, New Hampshire
Page Contents
50 people indexed on this census page (ia:1930:15thcensus1300unit:0675)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Marion Hayes | 45 | Head | — | New Hampshire |
| 2 | Conrad M Hayes | 46 | Head | Laborer | New Hampshire |
| 3 | Lizzie M Whitten | 57 | Housekeeper | Housekeeper | New Hampshire |
| 4 | George M Bridge | 84 | Head | Farmer | New Hampshire |
| 5 | Margaret Bridge | 47 | Daughter | Housekeeper | New Hampshire |
| 6 | Seth Lunn | 51 | Boarder | Farmer | New Hampshire |
| 7 | George R Merrill | 38 | Head | Merchant | New Hampshire |
| 8 | Effie R Merrill | 33 | Wife | Clerk | Vermont |
| 9 | Sylvia Merrill | 14 | Daughter | — | New Hampshire |
| 10 | Leona Merrill | 11 | Daughter | — | New Hampshire |
| 11 | Philip Merrill | 6 | Son | — | New Hampshire |
| 12 | Fred Pruitt | 22 | Head | Tractor Driver | New Hampshire |
| 13 | Ida Pruitt | 20 | Wife | — | New Hampshire |
| 14 | Fred Jr Pruitt | 1 | Son | — | New Hampshire |
| 15 | Ettie Adams | 45 | Mother in law | Postmistress | New Hampshire |
| 16 | Daniel G Hoyt | 69 | Head | Farmer | New York |
| 17 | Emma Hoyt | 62 | Wife | — | Massachusetts |
| 18 | Arthur Pruddy | 50 | Hired man | — | New Hampshire |
| 19 | Chester B Jordan | 37 | Head | Tree Surgeon | New Hampshire |
| 20 | Dorothy Jordan | 27 | Wife | — | Vermont |
| 21 | Patricia B Jordan | 6 | Son | — | Vermont |
| 22 | Edward C Jordan | 4 | Son | — | Vermont |
| 23 | Robert Jordan | 3 | Son | — | Vermont |
| 24 | William Jordan | 2 | Son | — | New Hampshire |
| 25 | Dorothy Jordan | 1 | Daughter | — | New Hampshire |
| 26 | William B Adams | 26 | Head | Carpenter | New Hampshire |
| 27 | Verna D Adams | 25 | Wife | — | New Hampshire |
| 28 | Peter M Adams | 1 | Son | — | New Hampshire |
| 29 | James Piper | 69 | Head | Needlework | New Hampshire |
| 30 | Louis Maurice Piper | 19 | Grandson | Brick Mason | New Hampshire |
| 31 | Eva E Colburn | 49 | Head | Janitor | Vermont |
| 32 | Gertrude L Colburn | 17 | Daughter | — | Canada English |
| 33 | Menaul P Colburn | 15 | Son | — | New Hampshire |
| 34 | Robert W Colburn | 13 | Son | — | New Hampshire |
| 35 | Leon A Polard | 36 | Head | Fireman | New Hampshire |
| 36 | Helene Polard | 36 | Wife | — | Maine |
| 37 | Virginia Polard | 11 | Daughter | — | New Hampshire |
| 38 | Eunice Polard | 7 | Daughter | — | New Hampshire |
| 39 | Leon Jr Polard | 4 | Son | — | New Hampshire |
| 40 | Edwin C Bacon | 49 | Head | Garage Owner | Vermont |
| 41 | Bertha Bacon | 31 | Wife | — | New Hampshire |
| 42 | Doris Bacon | 7 | Daughter | — | New Hampshire |
| 43 | Lois Bacon | 4 | Daughter | — | New Hampshire |
| 44 | Lucy Bacon | 72 | Mother | — | Canada English |
| 45 | James Le Mere | 24 | Employee | Mechanic | Wisconsin |
| 46 | William H Hart | 55 | Head | Farmer | New Hampshire |
| 47 | Mary J Hart THIS PERSON | 53 | Wife | — | New Hampshire |
| 48 | Earl W Hart | 21 | Son | Mason | New Hampshire |
| 49 | Frederick R Hart | 19 | Son | Truck Driver | New Hampshire |
| 50 | Marion D Merrill | 17 | Daughter | — | New Hampshire |
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)