Honoring Alexander Hamilton’s Birthday #OnThisDay At 17 years of age, Alexander Hamilton wrote a captivating letter to his father about a devastating hurricane which destroyed much of St. Croix in 1772. ⛈ Once published, it changed the course of his life and history forever. Today is his birthday. Happy Birthday, Alexander Hamilton. 🎈 Learn more at amazon.com SaveSave SaveSave Discover 6 Important Quotes attributable to Alexander Hamilton.