SAN FRANCISCO — Litigator William Dillingham, founder of San Francisco boutique Dillingham & Murphy, died Monday of liver cancer. He was 64.

Dillingham, known to friends as “Bill” or “Willo,” was born in Mineola, New York, in 1951. He graduated Yale University in 1973 and Hastings College of Law in 1976. He started his career at Pillsbury Madison & Sutro (a previous incarnation of the firm that is now Pillsbury Winthrop Shaw Pittman) from 1977 to 1982, and retained many lifelong friends from his years there.