Ismark Kolyanovich

What we know

Son of Kolyan Indirovich; new burgomaster after father's death (Session 4 @ 00:40:45)
Ushered party into Barovia Village during Session 3; organized defense against undead siege (Session 4 @ 00:02:38)
Severely wounded fighting pale zombie at town square; saved by party (Session 4 @ 00:11:14)
Dual-wields longsword and shortsword; fought after Mercurio's Healing Word (Session 4 @ 00:30:06)
Ran to manor after messenger named him burgomaster; found father dead (Session 4 @ 00:53:48)
Sending adoptive sister Ireena Kolyana to Vallaki; staying to rebuild village (Session 4 @ 00:56:30)
Three favors: escort Ireena, visit Madame Eva at Tser Pool, bury Kolyan (Session 4 @ 01:02:36)
Organizing search for missing Gertruda (Session 4 @ 02:33:49)
Supplied party rations, water, and wine for trek to Tser Pool (Session 5 @ 00:18:03)
Warned of Baron Vargas Vallakovich, night travel, and Strahd's spies on roads (Session 5 @ 00:23:28)
Ismark the Great—ancestor; companion of Lugdana alongside Livius Martikov; statue in Barovia Village square (Session 22 @ 00:48:00)

Tavern in Barovia Village during Session 3 (Session 4 @ 00:02:38).

Sildir Lay on Hands and defended Ismark's dedication to village (Session 4 @ 00:27:07)
Eulogized Kolyan at funeral (Session 4 @ 02:18:59)