It all started with a search for his own family heritage. It led to uncovering long-hidden secrets that lie at the heart of Columbia’s early history. David Brinkman, a computer software designer who does pioneering historical and archaeological work for the love of it, will share his findings regarding a number of little-known facts about the state capital. The free lecture at the South Carolina Confederate Relic Room and Military Museum will occur at noon on Friday, Oct. 19, and will cover a wide array of fascinating topics. The program will be followed by a book signing for Brinkman’s recent published autobiography. Lemonade and cookies will be served.