Kingsbarns is out of the Graded-placed Lady Tapit (Tapit), a winner who was placed at Grade 3 level and a half-sister to the Grade 1 winner Gozzip Girl (Dynaformer). He is a half-brother to Lord Sheldon (Candy Ride), who won four races.

Second dam Temperence Gift (Kingmambo) was unraced. She is the dam of Gozzip Girl, winner of the Grade 1 American Oaks, and of Gallileo Figaro (Galileo), who won six races.

Third dam Shapiro's Mistress (Unpredictable) won several stakes races in the US.

Gozzip Girl is the dam of Chuck Nate, a Group 2 winner in Japan, and Gallileo Figaro produced Gallileo's Town and Gianella, both Group 3 winners in Argentina. The family also includes the sire Brocco (Kris S), a dual Grade 1 winner.

Lady Tapit has a 2-year-old colt by Gun Runner and a yearling filly by Munnings, and she foaled a colt by Not This Time in 2024.