Mimi Gregg, the daughter of a famous soprano and a lifelong advocate for the arts in Haines, always hoped her family would produce another opera singer.

It did, but she never knew. Neither did anyone else until an opera singer living in Florida entered her DNA into an online ancestry database in February 2016. Katie Saunders, 49, said this week she wasn’t looking for long-lost family when she spit into a vial she sent away…