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Founded in 1867 for the descendants of two brothers, Robert & John Killough who came from Northern Ireland to Boston in 1718.

Formed in 1988 to promote interest and encourage research in all aspects of Kay (Kaye, Key, McKay) family history.

Formed in 1988 to pursue the genealogical research of the Kay family. Particular emphasis is placed on the family of Robert Kay, Sr. (ca 1725-1808) of South Carolina.

For the Kemp family and allied families.

Founded in 1977 for the purpose of fostering a spirit of kinship, high genealogical standards, and family history among Kerrs and Carrs throughout North America.

Organization for Keefer, Kieffer, Keffer, Kiefer, Keiffer, Keifer families, including publishing a quarterly newsletter and holding bi-annual reunions.

Organization for the descendants of early Mormon leader Heber C. Kimball (1801-1868).

Incorporated in 1972 for the descendants of Richard Kimball who came to America in 1634.

Organized to study and research the Kirouac families in America and elsewhere.

Devoted to investigating the family's genealogy, preserving Kissam family artifacts and sites, and promoting family members' role in the history of the United States since 1644.