I don't see any immediate allusions that come to mind, Samuel being a common name, and Quint being somewhat uncommon but not unknown surname. In the game of piquet, the terms is sometimes used to refer to a five card straight flush or as a shortened version of "quintuplet". The surname derives from Middle English Quient, or Old French Cointe or Cuinte with a meaning of "Wise Prudent; Crafty Sly; Elegant; Vain", but that would be just the last name.
The only other thing I can think of is that he is referring to that his initialism, "S. Quint" could be read as the English word "squint" as in to peer closely.