Interesting. When I was a wee lad, I was taught that epistemology was the study of how we know things to be "true." Is there a difference between this definition and the definition in the initial group post? IIRC the original field involved close readings of texts -- epistles.
Somewhere (it may have been at philosophy.com) I read a definition of 'philosophy' that defined it as the study of truth. That was then divided into two categories epistemology an ontology. The former dealing with truth of statements and the latter being about the existence of things, I.e. whether or not we say that something exists. Not sure if this is an accurate definition but it seem to have served me well.