Robert "Bob" A. Grantham, 81, of Tucson, AZ, passed away Friday, March 18, 2022 peacefully in his sleep at his home.

Robert was born to Robert E. and Katherine J. (Noon) Grantham on May 24, 1940.  He is preceded in death by his parents and both sisters: Jean (Grantham) Devore and Kathryn "Katy" Grantham.

Robert is survived by his four children: Jim (Malisa) Grantham, Carol (Paul) Canada, Rick (Wendy) Grantham, and Cathy (Joseph) Ureno; and thirteen grandchildren: Justin (Angelica) and Jenna Grantham; Marcus, Jeremiah, Kylea, Nathan and Luke Canada; Will, Ben, Drew, Hope, and Grace Grantham; and Sabrina Ureno.

Private family services will be held.  In lieu of flowers, donations can be made to a charity of choice or to the Arivaca Clinic at 17388 W. 3 rd St., Arivaca, AZ 85601.