Titan was discovered in 1655 by a Dutch dude named Christiaan Huygens. I really don't know what his parents were thinking when they tossed that extra a in his name, but I digress. Huygens also contributed to a lot of different fields of study, including optics, engineering, and so on and so forth.
Scientists are looking at Titan to see if there is some possibility of prebiotic (pre-life) chemistry that could lead to some form of life. Of course, being a moon of Saturn and as such being a REALLY long ways away from us, there haven't been a lot of studying of Titan up close and personal.