I've had a couple:
Probably my favorite one, I began at the 867 start date as a count within the Duchy of Champagne. I established a close two hundred year relationship with the Frankish Karlings until around 1025, a 6 year old Beatrice Karling found herself on the throne. Being that my wife had been a French Princess to a previous king, my son inherited her claim upon her death. So when Beatrice was deposed by her wicked uncle, after a few years of oppression, I arranged for my son to marry the deposed Queen Beatrice. Being that she was now broken, disinherited, and not even 16, she agreed to a regular betrothal and married my son at 16. At that moment I declared war on the new king for my son's claim to the throne. In addition, all of Beatrice's ex-vassals who had been treated poorly by the new King (nearly everyone) joined my cause. After a bloody civil war, I took the throne for my son (I think his name was Charles). After nearly 200 years, France had been purged of Karling rulership and now my house was the new royal house, outmaneuvering the Capets and the Poitous. King Charles (I think the V) and Queen Beatrice then ruled in peace for several years. They had a family. Charles' heir, Jason, was the finest marshal in the entire realm. His martial rating was about 27 and Charles was filled with pride to have his oldest son lead the French armies into battle. After about 30 years on the throne, the Ummayad Caliphate declared an invasion of Aquitaine. With half his realm under attack from heathens, King Charles dispatched his son Jason to lead the vanguard into Barcelona to meet his enemies. France could not hope to beat back this invasion on their own and in a desperate plea for help, the King called upon his Christian contemporaries, the King of England, the Kaiser, the Pope, the King of Alba (a united Scotland and Ireland under Irish rule). All of them answered the call and we had a mega war on our hands. One of the turning moments of the war happened when Jason, Prince of France and heir to the throne, at this point 27 years old was killed in personal combat by Caliph Danyal. King Charles was filled with rage and marched south to relieve his armies. The tide began to turn for the Christian nations as Charles captured and beheaded several Muslim generals and soldiers. Pushing the war score up toward 65%, the final blow was delivered when Caliph Danyal's son (though not his heir) was slain in battle against the King. After his son's death, the Caliph proposed his own terms of surrender, and Charles' kingdom was saved, but at great personal loss. After his trek back to Paris, I had noticed that the king had gained two new traits, depressed and drunkard. The King was now a broken man. Although he had 2 other sons, Jason was his favorite. His oldest, the fiercest warrior and a great general. Before his death, Jason had a family, including a young son, Charles. King Charles took his namesake under his wing. I would imagine those lessons would have gone something like this: Young Charles sits cross legged on a round tapestry listening intently while King Charles, bottle of wine in hand and tears in eye, regales him with tales of Young Charles' father, the would be king, filling the child's head with notions of heroism, courage, bravery, and chivalry. King Charles died of depression 9 years after his son's death, having never overcome the grief of losing him, and so his grandson Young Charles inherited the throne in an attempt to live up to the legend of his father.