The families of Wemple and Wemp descend from Jan Barentse Wemp, who was born in Dort, Holland, in 1620, came to America, 1640, arrived in Beverwyck in 1643-45. He appears in several land transfers, including "bouwery" on the Poestenkill, and in 1662 patent for the Great Island lying west of Schenectady, and a house lot in the village. He married Maritia Mynderste [Myndertse?], who survived him, and married (second) Sweer Teunis Van Velsen, the village miller, with whom she perished in the massacre of February 9, 1690. Children of Jan Barentse Wemp:
- Myndert, born 1649;
- Grietje, 1651;
- Anna, 1653, married Sander Glen;
- Barent, 1655;
- Johannes;
- Aeltje, married Jan Cornelise Van Derheyden.
(II) Myndert Wemple, eldest son of Jan Barentse and Maritia (Mynderste) [Myndertse?] Wemp, was born in 1649. He was appointed justice of the peace by Leisler in 1689 and was killed in the massacre of 1690, where his mother was killed, and also his son Johannes was carried away captive but later redeemed. He married Diewe, daughter of Evert Janse Wendel. Children:
- Johannes,
- Susanna, married Johannes Simonse Veeder.
(III) Johannes, only son of Myndert and Diewe (Wendel) Wemple, died in Schenectady, October 14, 1749. He was one of the trustees of the Schenectady patent. In 1711 was "of the Mohawk's country on the Mohawk River," owned land on the south side of the river, in the present town of Rotterdam; he made his will March 5, 1748. He married (first), June 15, 1700, Cataline, daughter of Ryer Schermerhorn; (second) Ariantje, daughter of Isaac Swits. He had twelve children, of whom Isaac was the seventh.
(IV) Isaac, son of Johannes and Ariantje (Swits) Wemple, was born August 28, 1715. He married Elisabet Newkirk and had issue.
(V) Johannes (2), son of Isaac and Elisabet (Newkirk) Wemple, was born about 1750. He married Maria, daughter of Isaac Swits, and had nine children.
(VI) Isaac (2), son of Johannes (2) and Maria (Swits) Wemple, was born in Rotterdam, Schenectady county, New York, September 8, 1777, died September 7, 1855. He was a farmer, justice of the peace and of considerable influence locally. He was a member of the Dutch Reformed church and a Democrat. He married Margaret Brott, born December 4, 1779, in Princetown, died at the age of seventy years. The Brott blockhouse was built on her father's farm in Princetown. Children:
- Fulda, married Edward Van Der Poel;
- Caroline, died unmarried;
- Eliza, married John Kaley;
- Aaron, of whom further;
- Henry, married Sally Ann Swits and settled in Owego, New York, left Annie and Swits;
- Edwin, now of Quaker street, Albany [i.e., Schenectady] county, New York, on October 20, 1910, celebrated his eighty-seventh birthday; married Eveline Wilbur, no issue.
(VII) Aaron, son of Isaac (2) and Margaret (Brott) Wemple, was born in Rotterdam, Schenectady county, New York, August 15, 1804. He grew up on the home farm and followed agriculture all his life. He married Agnes Van Der Poel, of Princetown, died December 11, 1885, daughter of James Van Der Poel, a soldier of the revolution. Children of Aaron and Agnes Wemple:
- Isaac, died in childhood;
- Isaac (2), of whom further;
- James, born January 23, 1835, joined the army of western adventurers and died in California in 1874;
- Margaret, July 10, 1837, now a resident of Syracuse, New York;
- Catherine, July 15, 1846, died July 30, 1876, leaving a son James.
(VIII) Isaac (3), son of Aaron and Agnes (Van Der Poel) Wemple, was born on the Wemple homestead in Rotterdam, Schenectady county, New York, October 20, 1833. He was educated in the public schools; grew up to the occupation of a farmer; purchased in 1878 one hundred acres of the old Pangborn estate in Rotterdam upon which he still resides. He has always been active in town affairs, and for fourteen years held public office, part of that time being supervisor. He is a Democrat in politics, and a man highly regarded by his neighbors. He married, in Rotterdam, Eliza Pangborn, born on the Pangborn homestead (part of which is now her home) in 1844, daughter of Abraham and Eliza (Vollick) Pangborn, both of Rotterdam, where they died on the homestead, both being over eighty years of age. Abraham was the son of John Pangborn, who located the homestead prior to the revolutionary war. He accumulated a large estate which he divided into two farms, giving one to his son James, the other to son Abraham. Children of Isaac and Eliza Wemple:
- Alonzo, died at the age of five years;
- Charles, died at the age of fifteen years;
- Ira, died at the age of five years;
- Frederick, died at the age of twenty-two years, married Lilliam Lightfoot, who married a second husband;
- James, married ———— Welty, resides with his father and has a child, Blanche;
- Addie, married Alexander Blessing, a lawyer of Schenectady; children: Harold and Agnes;
- May, married Emmett Blessing, of Schenectady.