Game concept
Confidant
From the game's encyclopedia
As a Clan Government Ruler you can decide to assign either your Vizier or any of your Spouses as your Confidant. Whoever you choose will support you in your daily tasks.
The game's text for patch 1.20.1.2. Words in blue are entries of the encyclopedia: hover one to read it, as in the game.
Confidant is an entry of Crusader Kings III's in-game encyclopedia. The game explains it: "As a Clan Government Ruler you can decide to assign either your Vizier or any of your Spouses as your Confidant." Patch 1.20.1.2, from game/common/game_concepts/00_game_concepts.txt and game/localization/english/game_concepts_l_english.yml.
Source: game/common/game_concepts/00_game_concepts.txt, game/localization/english/game_concepts_l_english.yml and the English localisation, Crusader Kings III 1.20.1.2.