What was the first year when the first tropical storm occured in December since record-keeping began?

Tropical Storm Nineteen of 1887 ?

First we have to find out when storm record keeping began. " Tropical storms thrive when the seas are warm, so December storms are unusual though not unprecedented in the Atlantic. Six tropical storms have strengthened into hurricanes in December since record-keeping began in 1851, including Epsilon in 2005, the busiest Atlantic season on record".Source

Then according to this chart tropical storm 19 th of 1887 formed on december 4th was indeed the first and became a hurricane . Thanx Dogspit for a good answer and not an easy one to find. Good job.