Kathleen Dolores Sinfield was born on Jan. 22, 1956, in San Mateo to Angelo and Eileen Giannini (Murphy). She was the second of their three children. Her siblings are Rich and Tom Giannini. Kathy attended Notre Dame (Belmont) St. Pius (Redwood City), Half Moon Bay High, College of San Mateo and later Cañada College where she studied accounting and genealogy.

Kathy followed in her mother’s footsteps and worked at Sequoia Hospital in Redwood City before leaving to work at Harris Farinon (San Carlos), where she later met her husband, Frederick. One of their first dates was a double date on Fred’s boat on San Francisco Bay where they really hit it off. They married about a year later on April 9, 1983, and had two children, Ryan Frederick and Duncan Alexis.

Kathy enjoyed spending her free time working with horses, reading, putting puzzles together, golfing, watching the Warriors, 49ers, and Giants, and guiding both boys through Scouting. Kathy always prioritized her faith and was a Eucharistic minister in the church. She was diagnosed with cancer on April 25, 2019. Following her courageous battle, Kathy passed away surrounded by family at home on Nov. 29, 2021.

Kathy is the mother of Ryan (Courtney) and Duncan, and grandmother to be. She is the sister to Rich (Sindey) and Tom (Jo Jo). She is a sister-in-law to Celeste Cadena (Vinny) and Connie Giannini, one of her closest friends. She is an Aunt to Chris Giannini (Ashley), Mike Giannini (Jenni), Charmagne Giannini, Austin Giannini, Brandon Giannini and Travis Sinfield.

The family expresses their appreciation to the staff at El Camino Hospital, Heartland Hospice and to her oncologist, Dr. Shane Dormady.

In lieu of flowers, the family asks you make a donation to the Mike Giannini Memorial Scholarship, P.O. Box 430, Moss Beach, CA 94038, or to the National Center For Equine Facilitated Therapy, 880 Runnymede Road, Woodside, CA 94062, or to the charity of your choice.

A rosary was held Monday, Dec. 6, 2021, at Our Lady of Mount Carmel Church in Redwood City. A funeral Mass was celebrated Tuesday, Dec. 7, 2021, at Our Lady of Mount Carmel Church, with burial at Our Lady of the Pillar Cemetery in Half Moon Bay.

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