Sui generis
Sui generis (; ) is a Latin phrase that means "of its (his, her, their) own kind; in a class by itself; unique."
Sugrue
Sugŕue is an Irish surname, which is an anglicized form of the old Gaelic name Ó Siochfhrádha, meaning "descendant of Siochfhrádh", or Ó Siochŕu the modern Gaelic equivalent of Ó Sugŕue, which in turn is a Gaelic version of the old norse German given first name Siegfried, meaning "victory and peace".