Udo

What we know

Son of Wilhelmina Rikalova (Session 10 @ 01:04:01)
Spoke out against Baron Vargas Vallakovich bringing unhappiness to Vallaki (Session 10 @ 01:04:24)
Taken to Vallakovich Manor for Baron "rehabilitation" (Session 10 @ 00:51:24)
Chained in upper-floor closet; beaten, starved, in rags (Session 11 @ 01:53:01)
Begged Baron and party to return to his mother (Session 11 @ 01:53:01)
Baron blamed Lady Fiona Wachter influence; party pledged to "correct" him (Session 11 @ 01:55:18)
Party scheduled to collect him tonight and transport to Blue Water Inn at odd hour (Session 11 @ 02:01:23)
Released by Baron in wrist shackles with bag over head; guards informed via Izek (Session 12 @ 01:58:15)
Irredel healed him with Cure Wounds en route (Session 12 @ 02:03:13)
Housed at Party Hideout; agreed to rehabilitation charade after persuasion (Session 12 @ 02:21:05)
Age 23; cobbler by trade; imprisoned three days (Session 12 @ 02:28:46)
Mother makes shepherd's pie; party offered to fetch cobbler tools (Session 12 @ 02:47:20)
Alexandra voiced anti-Baron views; Udo never saw her at manor (Session 12 @ 02:33:34)
Father Lucian careful not to antagonize Baron; missing three to four days (Session 12 @ 02:32:50)
Weak at hideout when tower party returned (~1 p.m. Session 14) (Session 14 @ 00:44:50)
Sildir and Mercurio fetched cobbler tools from Wilhelmina Rikalova; shepherd's pie promised (Session 14 @ 01:18:09)

Party shown him in locked closet by Baron Vargas Vallakovich during Session 11 manor visit (Session 11 @ 01:53:01).

Unconfirmed: whether Udo will maintain cover during Baron inspections (Session 12 @ 02:38:34)