Here is a helpful guide for those who were confused as I was about all the nobility titles : r/OtomeIsekai
Debrett's Guide to the Ranks and Privileges of the Peerage
Duke vs. Prince, Earl vs. Duke, Count vs. Duke: Understanding the Differences in Aristocratic Titles - Royal Titles - Genuine Titles of Nobility
Royal titles: Duke, Duchess, Earl, Countess and Viscount - A guide to British royal titles | Royal | News | Express.co.uk
Why is Prince Edward an Earl, not a Duke? - YouTube
Debrett's Guide to the Ranks and Privileges of the Peerage
How does one become a Duke or earl in the United Kingdom (UK), and how old must someone be to assume that title if they inherit it? What types of titles are
What Is an Earl? - PureWow
What Is a Duke? Here's Everything We Know About the Royal Title
What's the difference between a duke, a prince, an earl and a baron? – The US Sun | The US Sun
The Merry Monarch - Delving into the realm of British titles
A Guide to British Titles and Precedence - Jane Austen articles and blog
Nobility Titles and Ranks in Medieval Europe | Swords and Armor
Regency History: A Regency History guide to dukes, marquesses and other titles
Duke" vs. "Prince" – What's The Difference? | Dictionary.com
Victorian England 101, Lesson 1: The Titled – The Noble and Most Singular Order of the Blue Carbuncle
What is an earl? And how is the British title different from a duke and marquess? | Evening Standard
Regency History: A Regency History guide to dukes, marquesses and other titles
The highest title ever associated with each county of England : r/MapPorn
What's So Special About A Duke? A Quick Guide To British Titles – Laurie Benson's Cozy Drawing Room
Earl | British Nobility, Titles & Ranks | Britannica
Regency History: A Regency History guide to dukes, marquesses and other titles
Regency History: A Regency History guide to titles for married daughters of dukes, marquesses and other peers
