pro sepro se
In propria persona.
Origin of pro seLatin, for himself, for herself, for themselves : pr&omacron;, for + s&emacron;, ablative of reflexive pronoun.
pro se - Legal Definition
adj/adv. Latin. For himself; on one’s own behalf; on one’s own. Characterization of one who represents himself/herself in an action without the assistance of an attorney at law and who acts as his/her own attorney of record.