MH
Mary Harrison — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Frederick, Maryland
Our Model Tree links this Mary Harrison across the 1900, 1910 and 1920 US Censuses in Frederick, Maryland (XGBoost, ~Confirmed) — first a spouse (b.~1864), then head of a 5-person household.
Age 56
b. ~1864
Female
Spouse
Born: Maryland
Married
1920 Census Record Details
| Census Year | 1920 |
| Location | Frederick, Maryland |
| Surname | Harrison |
| Given Name | Mary M. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 56 |
| Marital Status | Married |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Additional Details | |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Frederick City |
| Est. Birth Year | ~1864 |
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 1920 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Hollis Harrison | Daughter | — | 28 | ~1892 |
| Luther Harrison | Head | — | 62 | ~1858 |
| Edgar Harrison | Other | — | 5 | ~1915 |
| Richard Harrison | Son | — | 23 | ~1897 |
| Mary Harrison | Spouse | — | 56 | ~1864 |
Census Appearances
1900
Frederick, Maryland
Spouse, age 38
Frederick, Maryland · implied b. ~1862 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harrison |
| Given Name | Mary P. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Maryland |
| Birth Month | Jan |
| Birth Year | 1862 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1910
Frederick, Maryland
Spouse, age 47
Frederick, Maryland · implied b. ~1863 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harrison |
| Given Name | May M |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Maryland |
| Years Married | 24 |
| Children Born | 5 |
| Children Living | 4 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1920
Frederick, Maryland
Spouse, age 56
Frederick, Maryland · implied b. ~1864 — 5 household members
| Surname | Harrison |
| Given Name | Mary M. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 56 |
| Marital Status | Married |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
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 Harrison across 3 US Census years (1900, 1910 and 1920) in Frederick, Maryland, using XGBoost record linkage.
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This person
Anchor record
Mary Harrison
Spouse · 1920 · age 56 · b. ~1864 · Maryland
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1920 US Federal Census — Frederick, Maryland
Open full size
1920 US Federal Census — Frederick, Maryland
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu672unit:0743)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Marie V. Saunders | 24 | Head | — | Austria |
| 52 | George T. Saunders | 1 | Son | — | Maryland |
| 53 | Thomas W. Duvall | 31 | Head | Telegraph Operator | Maryland |
| 54 | Dora A. Duvall | 28 | Wife | — | Maryland |
| 55 | Gordon W. Duvall | 10 | Son | — | Maryland |
| 56 | Audrey Duvall | 5 | Daughter | — | Maryland |
| 57 | Daniel M. Ball | 61 | Head | Wagon Maker | Maryland |
| 58 | Lizzie E. Ball | 59 | Wife | — | Maryland |
| 59 | Alice V. Barlow | 63 | Head | — | Maryland |
| 60 | Timothy Barlow | 41 | Boarder | — | Maryland |
| 61 | Luther T. Harrison | 62 | Head | Machinist | Maryland |
| 62 | Mary M. Harrison THIS PERSON | 56 | Wife | — | Maryland |
| 63 | Richard T. Harrison | 23 | Son | Moulder | Maryland |
| 64 | Hollis Mildred J. Harrison | 28 | Daughter | Bookkeeper | Maryland |
| 65 | Edgar G. Harrison | 5 | Grandson | — | West Virginia |
| 66 | Morton T. Leage | 22 | Head | Vulcanizer | Maryland |
| 67 | Hallie M. Leage | 22 | Wife | — | Maryland |
| 68 | Dorothy A. Leage | 1 | Daughter | — | Maryland |
| 69 | Harry M. Williams | 25 | Head | Steam Fitter | Maryland |
| 70 | Pearl E. Williams | 24 | Wife | — | Maryland |
| 71 | Margaret E. Williams | 1 | Daughter | — | Maryland |
| 72 | William H. O'Hara | 31 | Head | Fireman | Maryland |
| 73 | Nellie A. O'Hara | 31 | Wife | — | Maryland |
| 74 | William E. O'Hara | 8 | Son | — | Maryland |
| 75 | Bruce T. O'Hara | 6 | Son | — | Maryland |
| 76 | Alice C. Ray | 63 | Head | — | Maryland |
| 77 | Russell T. Ray | 15 | Son | Baker | Maryland |
| 78 | Charles Hebb | 27 | Boarder | Chauffeur | Maryland |
| 79 | Byrne Dewitt | 21 | Boarder | Chauffeur | Virginia |
| 80 | George R. Mohr | 60 | Head | Watchman | Maryland |
| 81 | Catherine M. Mohr | 60 | Wife | — | Maryland |
| 82 | Mary N. Mohr | 22 | Daughter | Hand Maker | Maryland |
| 83 | Charles A. Michel | 33 | Head | Salesman | Maryland |
| 84 | Ada G. Michel | 25 | Wife | — | Maryland |
| 85 | Harry L. Marman | 38 | Head | Truck Driver | Maryland |
| 86 | Mabel C. Marman | 37 | Wife | — | Maryland |
| 87 | Charles H. Marman | 5 | Son | — | Maryland |
| 88 | Lewis H. Marman | 3 | Son | — | Maryland |
| 89 | Harvey H. Bowers | 53 | Head | Conductor | Maryland |
| 90 | Harry L. Runkles | 25 | Head | Machinist | Maryland |
| 91 | Elizabeth Runkles | 24 | Wife | — | Indiana |
| 92 | Vera Runkles | 1 | Daughter | — | Maryland |
| 93 | John N. Davis | 45 | Head | Machinist | Maryland |
| 94 | Florence A. Davis | 51 | Wife | — | Maryland |
| 95 | Harry T. Davis | 17 | Son | — | Maryland |
| 96 | Naomi M. Davis | 15 | Daughter | — | Maryland |
| 97 | John F. Davis | 14 | Son | — | Maryland |
| 98 | Elmer R. Davis | 11 | Son | — | Maryland |
| 99 | Harry F. Duvall | 48 | Head | — | Maryland |
| 100 | Nancy E. Duvall | 14 | Daughter | Clerk | Maryland |
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)