Regaleira is out of the winning Roca (Harbinger), whose best result was third place in the Gr.3 Daily Hai Queen Cup. Roca has three winners from four runners, among them the multiple group-placed Douradores (Duramente), who finished second to Regaleira in the Gr.2 Sankei Sho All Comers.

Second dam Land's Edge (Dance in the Dark) is a half-sister to the Japanese Triple Crown winner and highly influential sire Deep Impact. Through Edgy Style (Harbinger) she is the second dam of the Gr.1 Kikuka Sho winner Urban Chic (Suave Richard), and through Bloukrans (Rulership) of the Gr.1 Oka Sho winner Stellenbosch (Epiphaneia).

Third dam Wind in Her Hair (Alzao) was a Group 1 winner in Germany and second in the Gr.1 Oaks at Epsom. She is the dam of both Deep Impact and Land's Edge.