“From that moment on, I just never stopped,” said Brown, 28, explaining her unusual hobby.

To date, she has returned hundreds of heirlooms; she stopped counting after she hit 190 in September.

As an interior designer specializing in budget-friendly decorating, Brown has long been a flea market fanatic. Now, though, she primarily uses her thrifting skills to sleuth for meaningful mementos — and reunite forgotten family heirlooms with their rightful owners.

She and her father, who is a trained genealogist, started working on genealogy cases as a father-daughter duo in 2019. They began with finding the family of a baby girl who was buried in 1938 in a New York cemetery, right next to Brown’s grandparents.

The Browns made it their mission to trace the baby girl’s lineage, and eventually they were able to find her living relatives, who knew she existed but did not know where she was buried. In an email response to the Browns, the baby’s niece said she is grateful to finally be able to visit the grave.

“Now she…