Carolyn Humphrey Kincaid died January 17, 2025, in Montecito, California. She was 93.

Carolyn was born in Fort Scott, Kansas, on July 21, 1931, to Wilbur William Humphrey of Holton, Kansas, and Bertha Harriet Lapham Humphrey of Clay Center, Kansas.

Her family moved to Carpinteria, California, in 1936. Carolyn graduated from Stanford University in 1953 with a Bachelor of Arts in Philosophy.

She married Robert L. “Bob” Kincaid of Denver, Colorado, the same year. In 1954, they moved to Cochabamba, Bolivia, under a U.S. State Department program providing technical mentorship to developing countries. During this time, their son, William Kincaid, was born.

After four years in Bolivia, the family returned to the United States where Bob found employment with Allis-Chalmers Machinery Company.

They lived in various states during this time, including Louisiana and California. In 1958 they settled in Guaynabo, Puerto Rico, where their sons, Peter and Duncan, were born.

With Bob leaving Allis-Chalmers in 1960, Carolyn and Bob started a business analyzing lubricating oils from mechanical systems across various industries, among them defense, power, transit, mining, manufacturing and maritime.

The demands of a fledging business — to say nothing of a family — did not keep Carolyn from other commitments. These included serving as board member and secretary for their children’s school; serving as president of their neighborhood’s homeowners association; and taking stewardship of a community library.

Carolyn’s time in Puerto Rico came to a close shortly after Bob’s death in 1998. After selling their business and house, Carolyn relocated to her childhood home of Carpinteria.

Soon after her return, Carolyn began supporting the Santa Barbara Botanic Garden as docent and served on the garden’s board of trustees. In addition to her work at the Botanic Garden, she volunteered at All Saints By-the-Sea Episcopal Church in Montecito, California, as well as various other organizations.

She met her second husband, the retired medical doctor Edward S. Henderson of Santa Paula, California, in 2003 at their 50th Stanford University class reunion. The two married in 2007 and lived in Carpinteria and Montecito in the years following.

Carolyn was preceded in death by her parents, Wilbur William Humphrey and Bertha Harriet Lapham Humphrey; her brother, Bruce Humphrey; her husband of 45 years, Robert L. Kincaid; and her second husband of 13 years, Dr. Edward S. Henderson.

She is survived by her sister, Joyce Humphrey Powell of Santa Barbara, California, and all three of her sons: William Kincaid and his wife, Dolores of Palo Alto, California; Peter Kincaid and his wife, Margaret, of Keaau, Hawai‘i; and Duncan Kincaid of Massachusetts.

Carolyn is also survived by all five of her grandchildren and two great-grandchildren: Nina Morris, husband Devon and child Shepard of Goleta, California; Michael Kincaid and partner Brandon Bostian of Atlanta, Georgia; Graciela Kincaid, husband Jeremy Jacob and child Emilia of San Francisco, California; and Risa Kincaid and Bruce Kincaid, both of Orcutt, California.

A service was held at All Saints By-the-Sea Episcopal Church on March 4.