Founder of Your DNA Guide

Diahan Southard

Diahan Southard is the founder of Your DNA Guide and the creator of Your DNA Guide the Academy, where she’s spent over two decades helping people use DNA to build their family trees with confidence. With a background in biology and a passion for connection, she’s known for making the science of genetic genealogy feel clear, accessible, and even fun. Whether you’ve just taken a DNA test or you’re knee-deep in match lists, Diahan’s step-by-step guidance has helped thousands of people discover where—and who—they come from.