Hudson-Mohawk Genealogical and Family Memoirs:
This information is from Vol. III, pp. 1020-1023 of Hudson-Mohawk Genealogical and Family Memoirs,
edited by Cuyler Reynolds (New York: Lewis Historical Publishing Company, 1911)
Source - SCHENECTADY DIGITAL HISTORY ARCHIVE

FLACK - Pages 1020/1023

This is one of the old families of St. Lawrence county, New York, intermarried with one still older in New England. James Flack, a soldier of the war of 1812, was one of the early settlers of the town of Lisbon, St. Lawrence county. Andrew Newcomb is of record in Boston, Massachusetts, as early as 1663. The alliance between the two families was formed about 1850, when two brothers, descendants of James Flack, married sisters, descendants of Andrew Newcomb. Both families have produced many men eminent in the professions and in business. They have been valiant in war and no less useful in times of peace. There have been noted scientists in the family, skilled physicians, ministers of the Gospel and famous agriculturists.

(I) James Flack, probably son of Richard Flack, was born in January, 1755, in Washington county, New York, died 1839. He was a resident of the town of Lisbon, St. Lawrence county, New York, prior to the war of 1812. Richard and John Flack settled there shortly after 1802. When James came, or the relationship existing between them, is not shown. He was married and had a child four months of age at the time he entered the army. His wife, feeling unsafe in her home so near the scene of hostilities, mounted a horse and, taking her baby, rode to Plattsburg and thence to Hebron, Washington county, New York. James became an extensive lumberman of the county. In 1818, when the turnpike was built from Ogdensburg to Parishville, Thomas Craig built a hotel at a point on the load that soon became the business center of the town of Lisbon. A post-office was established, two churches built, an ashery, a store and a carriage shop. James Flack bought and enlarged the hotel which so improved the town that it was named in his honor, Flackville. He married Margaret McCarter, born in Washington county, New York, 1751, died 1835. Children: Richard, John, James, Robert (see forward); Samuel, Nancy, Martha, Jane and Mary.

(See my comments below on the accuracy of the above paragraph.)

(II) Robert, son of James and Margaret (McCarter) Flack, was born in Hebron, Washington county, New York, 1791, died in Syracuse, New York, 1857. He was a farmer all his active days in Lisbon, St. Lawrence county, but late in life removed to Syracuse, where some of his children were in business. He married Martha Lytle, born in Hebron, New York, 1792, died in Syracuse, July 16, 1832. Children:

1. David H., born in Hebron, September 19, 1818, died in Troy, New York; he was one of the leading business men of Lansingburg and Troy, and was associated with his brothers in business; married Sarah Newcomb, who bore him seven children, one of whom, Clarence, was of the firm of Roehmer & Flack, manufacturers of Troy, New York.
2. William Adam, see forward.
3. Isaac G., July 4, 1830, of whom further.
4. James.
5. John.
6. Maria.
7. Sophia, who married Samuel Burrett.

(III) William Adam, son of Robert and Martha (Lytle) Flack, was born in Lisbon, St. Lawrence county, New York, August 10, 1824, died in Lansingburg, Rensselaer county, New York, December 29, 1901. He was educated in the district schools, and worked with his father until 1843, when he went to Syracuse, New York, where he engaged in the manufacture of salt, continuing here until August, 1846, when he removed to Lansingburg, New York, where he was in the grocery business. In March, 1850, he removed to Albany, New York, where, in company with George H. Newcomb, he opened a grocery store at the corner of Broadway and Columbia street. The firm was Flack & Newcomb. In 1851 he sold his interest and returned to Lansingburg, where with his brother, David H., he formed the grocery firm of W. A. Flack & Company. In 1852 he purchased his brother's interest, and in 1856, in company with Samuel Dauchey, under the firm name of Dauchey & Flack, established a wholesale produce and seed business in Troy, New York. In 1859 he sold his interest and gave his entire attention to his grocery business in Lansingburg, which he had retained in connection with his business in Troy. In 1864 he again engaged in the wholesale and retail grocery and seed business in Troy, with David H. Flack. There were some later changes in personnel of the firm, but William A. remained active in business until within a few years of his death. In 1862 he was elected director of the Farmers' Bank. He was a Republican and held the office of village trustee in Lansingburg from March, 1859, till March, 1866; was re-elected again in 1870, and again in 1872; was elected supervisor in March, 1866, and served one year. He was a Methodist in religious connection, and served the Lansingburg church as trustee. He married, April 19, 1852, in Pittstown, Louisa, born in North Pittstown, Rensselaer county, New York, January 26, 1830, daughter of Dr. Simon Newcomb. (See Newcomb VI) Children:

1. William Simon, born December 3, 1853, died in Lansingburg, 1898, unmarried.
2. Mary Louise, October 24, 1855, died September 17, 1860.
3. Elizabeth Helen, April 15, 1859, unmarried.
4. Charles Edward, March 15, 1861, died October 29, 1865.
5. Anna Louise, January 23, 1863; married Herbert Marshall Caswell, and has a daughter, Barbara Flack Caswell.
6. John Edward, April 19, 1868; married Harriet Hines, and has a daughter, Eleanor, born 1900.

Mrs. William A. Flack survives her husband and resides in Lansingburg, where she enjoys the friendship and esteem of her large circle of acquaintances. She rejoices in the companionship of her children and grandchildren, who are the comfort and solace of her declining years.

(III) Isaac G., third son of Robert and Martha (Lytle) Flack, was born in Lisbon, St. Lawrence county, New York, July 4, 1830, and died in Lansingburg, New York, October 26, 1899. He was educated in the district schools and for a few years worked in various positions for others. He later went to Syracuse, New York, where he was engaged with his brother, William A., in the salt business. Not finding that line entirely congenial he returned to Troy and with his brother David was engaged in the manufacture of brushes. Later he was of the wholesale grocery and seed firm formed by the Flack brothers, and continued in active business until his death, although there were changes in the personnel of the firm. He was president of the village of Lansingburg and held numerous town offices. He was very popular with his townsmen and served them well in the different places of trust to which their partiality elected him. He was a very generous, warm-hearted man, and no appeal for aid was ever made to him in vain. His leading characteristic perhaps was his intense love for home and family. He was essentially a home man, and when freed from business and official cares was always to be found there. He early became a member of the Methodist Episcopal Church and always was a loyal, consistent member. He married (first) Mary E. Abrams, born in Lansingburg, in 1835, died there in 1873. Children:

1. George A., now living in Troy;
2. Emma S., wife of John E. Inskip, of Troy;
3. Frank, deceased;
4. Harry, deceased;
5. Mary L., unmarried;
6. Charles I., married Mabel M. Link.

Mr. Flack married (second) Mary S. Wade, born in Washington county, New York, in 1835. She was the mother of Frederick, born and died in 1875. Mrs. Flack survives her husband, and resides in Troy.

The Page extracts from "Hudson Mohawk" ends here.