Dictionary.com
definitions

in propria persona

[in proh-pree-uh per-soh-nuh]
adverb Law.
  1. represented by oneself and not by an attorney. Abbreviation: in pro. per.

Origin of in propria persona

1645–55; < Latin: in one's own person
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for in propria persona

in propria persona

adverb
  1. mainly law in person; personally
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012