Comanche Brave is out of Ishvana (Holy Roman Emperor), winner of the Gr.3 Jersey and runner-up in the Gr.1 Irish 1000 Guineas. He is the seventh of her eight foals, the best of her three winners and her only black-type performer, and a full brother to the unraced three-year-old filly Existence. Ishvana is a full sister to Holy Alliance, the dam of Mountain Bear (No Nay Never) and of the Group 3-placed winner Moon Daisy.

Second dam Song Of The Sea (Bering) bred three other winners, and through her daughter Holy Alliance she is the grandam of Mountain Bear, winner of the Listed Star Appeal Stakes and second in the Grade 1 Breeders' Cup Juvenile Turf. She is a half-sister to the Listed-placed dual winner Robscarvic (Statue Of Liberty).

Third dam Calypso Run (Lycius) bred six winners. She is a half-sister to Sailor's Mate (Shirley Heights), winner of the Gr.3 Meld Stakes and dam of three Listed winners, King Adam, Cunning Vixen and Sea Spray, and related to the dam of Hellenic (Darshaan), winner of the Gr.1 Yorkshire Oaks.

Hellenic is the dam of Islington (Sadler's Wells), a multiple Group and Grade 1 winner whose wins include the Grade 1 Breeders' Cup Filly & Mare Turf, of her full brother Greek Dance, winner of the Gr.1 Grosser Dallmayr Preis, and of Mountain High (Danehill), winner of the Gr.1 Grand Prix de Saint-Cloud.