Okay, here's my complete list of all the people who were buried in the woods, dead or alive (if I forget a name or names, feel free to add them on), not necessarily in order:
[spoiler]Barnabas Collins
Quentin Collins
Angelique
Nathan Forbes
Quentin and Jenny's infant son
Nellie
Julianka the gypsy
King Johnny
Sandor
Natalie DuPres (after Ben Stokes accidently killed her during Barnabas' 1st return to 1796)
Pansy Faye
Wanda Paisley[/spoiler]
That's all I can think of.