the power to influence or impress glamour. high status or reputation achieved through success, influence, wealth, etc renown.
Here's a quick overview of actions that increase your prestige in CK3: Preferably uncles/not close kin to avoid the claims. To whom should i grant duchies and counties? The portrait of dukes (or equivalent) has a thin silver border adorned by gems. It is generally held by a Duke tier character. Crusader Kings II, is the level of authority ('title tier') below kingdom and above county.
Invite one of the male claimants over to your court. To claim a duchy from somebody else through war (when you don't have a casus belli that lets you claim it directly): Find out who* has a claim on it by opening the duchy information screen and clicking on 'Claimants' to see who has a claim on that kingdom. Too Many Held Duchies: If a character is a King or Emperor, they can hold a maximum of 2 Duchy titles without penalties.