Alexander III of Scotland was born in 1241 and became king at the young age of 7 after the death of his father, Alexander II. His reign lasted from 1249 until his untimely death in 1286, during which he worked to strengthen the Scottish monarchy and maintain peace with England. Alexander III is known for his efforts to expand Scotland's territory and improve its economy. He successfully negotiated treaties and built alliances, which helped stabilize the kingdom. His reign is often seen as a period of prosperity, but it ended tragically when he fell from his horse and died, leading to a succession crisis.