Many lion fiction stories use lions to teach moral lessons. Just like in Aesop's fables where the lion's actions and interactions with other animals show things like the importance of not underestimating others (the lion and the mouse fable). Lions are also often the center of adventure stories, as they live in an environment that can be full of danger and mystery in these fictional tales.
I'm not sure specifically as I haven't read it. But generally, fan fiction about lions might involve their adventures, relationships within the pride, or perhaps some fictional scenarios where they interact with other elements in their environment.
Sure. 'The Lion, the Witch and the Wardrobe' by C.S. Lewis is a great one. It tells the story of four children who enter the magical land of Narnia through a wardrobe and encounter a talking lion named Aslan. Another is 'Born Free' which is based on the true story of Elsa the lioness and is also fictionalized in a very engaging way.
The 'lion to guard us' in historical fiction could have multiple meanings. Historically, lions were often seen as symbols of royalty and power. So in the context of the story, it could be related to the power structure. Maybe it's a secret society with a lion as its emblem that guards certain secrets or people. It could also be a spiritual or superstitious element, where the belief in a lion - like protector gives the characters hope and courage.
One common theme is power. The sixth lion often brings a new level of power to the Voltron team. Another theme is unity. It shows how the team has to adapt and become more united with the addition of the sixth lion.
The 'Lion of Ireland' concept often serves as a powerful symbol in historical fiction. It can represent the strength, courage, and tenacity of the Irish people throughout history.
The aforementioned 'The Lion, the Witch and the Wardrobe' is also suitable for children. It has elements of magic, adventure, and good versus evil that kids can easily understand. The character of Aslan, the lion, is very heroic and kids can look up to him. Another option is 'Lions at Lunchtime' which is part of the 'Magic Tree House' series. It takes children on a journey to Africa to learn about lions and their habitats.