Do marks go away when a character becomes unconscious? And of so, where does it say that? 
An example: Last night the party paladin marked a goblin archer, but the paladin went down midway through the round. Is the mark still active as long as the paladin is adjacent to the goblin?
Hyrum.

An example: Last night the party paladin marked a goblin archer, but the paladin went down midway through the round. Is the mark still active as long as the paladin is adjacent to the goblin?
Hyrum.