An acolyte of Acathla, expert on demons. You can skip the passages about his garden, unless you're keen on growing heartier beets.
Rupert Giles[src]

Lucius Temple was an acolyte of Acathla and an expert on demons. In his diary he wrote about Acathla, demon dimensions and his garden, including his methods for growing heartier beets. Since Acathla was first raised centuries ago, it is likely Temple eventually died.