Namesakes
Sigmund
(m) 
Characters in Norse Mythology
Sigismund
(a.k.a. Sigmund) (m) 1566-1632
Swedish Kings and Queens 1592-1599
Polish High Dukes and Kings (Zygmunt III Vasa) 1587-1632
Sigmund Freud
(m) 1856-1939
Notable Philosophers and Thinkers
Jackie Jackson
(a.k.a. Sigmund) (m) 1951-
Rock and Roll Hall-of-Famers 1997 The Jackson 5