@NegroniLover I wanted to write a fan fiction based on a gothic horror book that I just finished, set in Victorian era. So I did a quick research on pinterest to get some inspiration for the main character, described as having dark hair, with a long, thin face. This guy came up! I went to Wikipedia and read that he's the adopted brother of James FItzjames, from the doomed 1845 Arctic expedition led by John Franklin. Just so happens I'm obsessed with that expedition, thanks to the TV show 'The Terror'--season 01 (I think it's on Netflix UK now). So I did further research into him and his family.
All we know is that his mother adopted James Fitzjames as a baby, she ran a kind, loving household, and William and James loved each other like brothers. James Fitzjames left his estate to William should he perish on the expedition (which he did). William himself apparently spent that money on paying for expeditions to search for Fitzjames.
Aside from that connection, William was a politician an avid art collector, some of his pieces are in important museums around the world. He was also a keen ally to Lord Palmerston for a while, he was pro Suffragette, championed the rights of the workers to unite for fairer wages, he supported the secret ballot, doesn't like the fact that one of the princesses was still getting pocket money from the British crown, despite having married a German, an 'unlikely Victorian socialist'. All made me like him even more. Gorgeous guy all around. Then I searched the internet to see if anyone else ever feels like this about a historical figure, and found your post! Hello friend! You're not alone, I'm not alone! Yay! Makes me feel less 'freakish' having a crush on a historical person who's long dead, despite being happily married. Thank you for putting this out there, seems like there's quite a number of us who share similar disposition!