Sigil
Ankh

Appearances
8, (11), 13, 20, 21, 24, 25, 31, 37, 40, 43, 46-48, (50), 54-56, Special, Death 1-3, Death Gallery, Dream Gallery, Little Endless Storybook, Endless Nights Chpts. 1, 3

Appearances outside Sandman
Ambush Bug Nothing Special, The Books of Magic (mini-series) #4,
The Books of Magic (series) #3, #4,  Captain Atom #42, #43, Cerebus #153, Doom Patrol #73,
          Ghost Rider 2099 #2, The Incredible Hulk #418, Legion of Super-Heroes #38, Lobo's Back #3

Other Names that Death is Known by
Teleute

Death is called Grandmother Death in Sandman #9. This may be the only other time when another member of the Endless is given an alternative name.