A person has been adding trivia about how different leaders are related, should someone take a look at that and verify it?
You can verify on Wikipedia: https://en.wikipedia.org/wiki/Family_tree_of_English_monarchs https://en.wikipedia.org/wiki/Family_tree_of_the_British_royal_family https://en.wikipedia.org/wiki/Family_tree_of_Portuguese_monarchs https://en.wikipedia.org/wiki/Family_tree_of_Castilian_monarchs https://en.wikipedia.org/wiki/Family_tree_of_Spanish_monarchs https://en.wikipedia.org/wiki/Family_tree_of_the_House_of_Orange_(1450%E2%80%931815) https://en.wikipedia.org/wiki/Family_tree_of_British_monarchs (simplified version, to verify Victoria in a simpler way)
John Lackland (son of Eleanor of Aquitaine) is the ancestor of all subsequent English (and later British) sovereign, and the Orange-Nassau family (Netherlands) descends from William V of Orange, son of Anne of England (daughter of George II of England, descendent of Eleanor, but also of Robert the Bruce).
Eleanor of England (daughter of Eleanor of Aquitaine) married Alfonso VIII of Castile, from whom descend the kings of Castile (and so Philip II of Spain). Trough their graundson Ferdinand III of Castile, descended Betrice of Castile (1293–1359), mother of Peter I of Portugal. The House of Braganza, to which Pedro II belonged, descended from Peter I of Portugal.
I understand that you need to verify, I hope that these information can help you. 151.33.250.99 22:44, 22 January 2021 (UTC)
I've just discovered that Eleanor is one the so-called "Grandmothers of Europe" (https://en.wikipedia.org/wiki/Grandmother_of_Europe), precisely because many kings of Europe descended from her 151.33.250.99 23:04, 22 January 2021 (UTC)
For the relationship with Jadwiga, you can read https://en.wikipedia.org/wiki/Capetian_House_of_Anjou, https://en.wikipedia.org/wiki/Charles_I_of_Anjou, https://en.wikipedia.org/wiki/Blanche_of_Castile and https://en.wikipedia.org/wiki/Eleanor_of_England,_Queen_of_Castile 151.60.185.155 17:49, 6 June 2021 (UTC)
About the hair color[]
I would have the sources about the fact that she used was depited withr with red hairs, many sources (like somes depicted in the book https://books.google.fr/books/about/Ali%C3%A9nor_d_Aquitaine.html?id=TZRtCQAAQBAJ&source=kp_book_description&redir_esc=y for exemple) depicted her with blond hair.