Apologies for the lateness of this.
As many will now know, Ralph P. Martin recently died. There are online obituaries (e.g. here, here, here, and here). Martin was Professor Associate here at Sheffield from 1988 to 1996. He supervised several PhD students during this time and became a regular at departmental events hosted at SBL. Martin was, of course, author of a number of books and articles in New Testament studies, including (among other things) widely read work on the theology of Mark and Phil. 2.6-11.