WILLIAM D. SHEPHARD, 84, professor of physics at the University of Notre Dame, died July 28, 2017. A member of Chi Psi, he received his degree with high honors and was elected to both Phi Beta Kappa and Sigma Xi. He received master’s and PhD degrees in physics at the University of Wisconsin. He then went to the University of Kentucky and in 1963 joined the faculty at the University of Notre Dame. At Notre Dame he co-founded the Notre Dame High Energy Elementary Particle Physics group, which carried out experiments at Argonne National Laboratory, Brookhaven National Laboratory, Fermilab, and CERN over the years, resulting in more than 200 refereed publications and 90 published papers in conference proceedings. He was a Fulbright senior research scholar and a guest professor in the Netherlands, and was a co-organizer of several international symposia on multiparticle dynamics. His first wife, Barbara Ann Parker Shephard, died. Survivors include his second wife, Nancy Kavadas Shephard, two stepchildren, seven grandchildren, and a nephew.