House af Sigurdr - GAME TACTICA

Jarl Sigurdr of Sjaelland 867​-914

Crusader Kings 3 Tips: The ultimate Guide

Silent Death Miniatures: Sourcebook Lot - Seven Books - Annex House Races Forces

Brewing Rebellion - Assassin's Creed Valhalla Guide - IGN

Fire Emblem™ Engage for Nintendo Switch - Nintendo Official Site

House af Sigurdr - GAME TACTICA

House af Sigurdr - GAME TACTICA

Paralogue - The Young Lion - Fire Emblem Engage Guide - IGN

Sword of Plot Advancement - TV Tropes

Fire Emblem Engage is the series Pokémon Let's Go moment

So the theory I posted in here a while ago has been debunked as we see Vander fusion with Sigurd. : r/fireemblem