Cavayr
Cavayr: A demon in the service of King Baruchas.
As such, he is part of the court of the north. Cavayr holds the rank of duke and oversees thousands of lesser spirits. He is bound to appear during a very specific time frame. In the work known as the Ars Theurgia, the following formula is given to calculate when Cavayr may manifest during the day: divide the day into fifteen portions of time.
Cavayr belongs to the fourth portion.
SOURCE:
The Dictionary of Demons written by Michelle Belanger