4 surviving letters between Libanius and Severinus, correspondent of Libanius, spanning 388-391 AD.
Libanius congratulates Severinus on his promotion and introduces Eusebius.
Praise for Severinus' career and virtue.
Libanius asks Severinus to repay friendship by helping Leontius.
A recommendation built through Priscion's dual reputation as advocate and sophist.