Deborah Vanderhoof Decker 1805-1832

Research Question

Was Deborah Vanderhoof (1805-1832) a daughter of Jacob Vanderhoof (1772-1847) and Ann Hopler (1772-1841)?

Online family trees

Some trees posit Deborah as a child of Jacob Vanderhoof and Ann Hopler.

One of the many trees at Ancestry listing children
of Jacob Vanderhoof and Ann Hopler

Published book of Vanderhoof researcher

Louisa Caroline Freeman Hickerson mentioned Deborah Vanderhoof in her book, Vanderhoof, though not as a daughter of Jacob and Ann. Three Decker brothers married Vanderhoof women. Louisa did not determine the parentage of Deborah.

Page of Freeman's book about Decker and Vanderhoof marriages.
Housed at the Denville Historical Society

Marriage of Deborah Vanderhoof and John Decker, 1822

On March 19, 1822 Deborah Vanderhoof and John Decker were married by Pastor John Ford in Morris County, New Jersey. Marriages in Morris County can be found in books digitized at Family Search. The range of years is from the late 1700s through the late 1800s, including past 1848, when New Jersey required centralized recording of marriages.

"March 19 1822 John Decker, Stony Brook to
Deborah Vanderhoof of Rockaway Valley"

"March 19 1822 John Decker, Stony Brook to
Deborah Vanderhoof of Rockaway Valley"

The problem with these marriage records is that additional information is scarce. For example, ages of the parties and names of parents are often not given.

Burial and gravestone evidence

Deborah Vanderhoof and John Decker were buried at Rockaway Valley United Methodist Church Cemetery in Boonton, Morris County.

Gravestones in Rockaway Valley United Methodist Church Cemetery
visited on the cold day of November 11, 2025.
Deborah Vanderhoof died March 13, 1832 
John Decker died September 5, 1877
Rachel Jacobus died November 17, 1866

The date of death etched on Deborah's stone is March 13, 1832. I'm no expert on gravestones, but I do not think that her stone was created at the time of her death; therefore, it is prone to inaccuracies. Next to Deborah is her husband, John Decker (1800-1877). Next to John is his second wife, Rachel Jacobus (1796-1866).

Children of Deborah Vanderhoof and John Decker and problems with the timeline

Deborah and John had children. Names of the children can reveal names of grandparents. John Decker's parents were Andrew Decker and Elizabeth Dulhagle. The two oldest children were named Elizabeth and Andrew. It is possible that other children were born and named after Deborah's side of the family and that we do not know about these children because they died young or they married and moved away before the 1850 census.

--Elizabeth Decker (1822-1897) married Cyrus Dixon (1814-1868)

--Andrew Decker (1827-1906) married Martha Dixon (1830-1919)

--Sarah Louise Decker (1830-19xx) married William Kanouse (1823-1903)

--Catherine Amanda Decker (1835-1915) married Charles Augustus Kincaid (1832-1901).

The year of birth for the youngest child, Catherine, varies in records, but is usually in the early 1830s. The year of birth on her gravestone is 1835. So Catherine's mother, Deborah, died anytime after her birth until her father remarried before the 1850 census. There were no recordings of deaths to the county or State of New Jersey in the 1830s. Either Deborah did not die in 1832 or Catherine was not born in 1835, or Deborah was not her mother.

Conclusion

With the information so far gathered, the parentage of Deborah Vanderhoof remains a mystery. No direct evidence links Deborah to Jacob Vanderhoof and Ann Hopler. None of the known and speculated children of Jacob and Ann named a daughter Deborah. Online trees copy one another. Further evidence is required to link Deborah to any set of parents.

If you have probate, church, or family Bible records related to Morris County Vanderhoofs, I would welcome hearing from you.