Seraphina derives from the Hebrew seraphim, often translated as "the fiery ones," referring to a high order of angelic beings associated with burning devotion. The name is commonly read as carrying intensity and ardor -- passion understood as a kind of luminous energy rather than something to be tempered or subdued.
When the Moon and lord of the ascendant shall be impedited by the lord of the 8th, the sick person hath cause to fear. - William Lilly (1602.-1681.)