Benjamin Grinstein ,
PhD from Harvard in 1984
Advisor: Howard Georgi , PhD from Yale in 1971
Advisor: Charles M. Sommerfield , PhD from Harvard in 1957
Advisor: Julian Seymour Schwinger, PhD from Columbia in 1939
Advisor: Isidor Isaac Rabi, PhD from Columbia in 1927
Advisor: Albert Potter Wills, PhD from Clark University in 1897
(not terribly famous - did some translations of Einstein)
Advisor:
Arthur Gordon Webster , PhD from University of Berlin, 1890
(prolific advisor - one of the chief architects of the APS)
Advisor: Hermann von Helmholtz
Graduated from the Medical Institute in Berlin in 1843, having studied
mathematics on his own, so Physics geneology ends there.