Prothero was the daughter of Dr. Daniel T. Milton and Gladys C. Milton. She was a graduate of Greenwich High School, class of 1959. She later graduated from Marjorie Webster Jr. College in Washington, D.C.
Prothero is survived by her son, Gregg Prothero (Christina) of Atlanta; and brothers, George "Jack" Frost of Phoenix, and Daniel Milton of Florida. She was predeceased by her parents; and brother, Clifford Frost of Old Greenwich.
A life celebration will be held Saturday, Jan. 11, at her home at Lido Presidential, Lido Key, Sarasota.
In lieu of flowers, donations may be made to Florida Cancer Specialists Foundation in honor of Prothero’s memory (http://foundation.flcancer.com)
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