Leslie's Rose is the second foal and first winner out of the unraced Wildwood Rose (Galileo), who was sent to the US in 2018, aged two. Wildwood Rose is a half-sister to five winners.

Second dam Wildwood Flower (Langfuhr), a stakes winner placed twice at graded level, is the dam of Materiality (Afleet Alex), winner of the Grade 1 Florida Derby in 2015, and My Miss Sophia (Unbridled's Song), who took the Grade 2 Gazelle Stakes in 2014 and was placed in two Grade 1 races, among them second in the Grade 1 Kentucky Oaks. My Miss Sophia in turn produced Annapolis (War Front), successful in the Grade 1 Coolmore Turf Mile Stakes in 2022. Wildwood Flower is a half-sister to Eye Of The Tiger (American Chance), a Grade 2 winner and later a sire, and to the stakes-placed Expanse (Distant View).

Third dam Dial a Trick (Phone Trick) was unraced and is a half-sister to Fighting Fantasy (Fighting Fit), a dual Grade 3 winner who won 16 races in all.

Expanse is the dam of Afleet Express (Afleet Alex), winner of the Grade 1 Travers Stakes in 2010, and Embellish the Lace (Super Saver), who won the Grade 1 Alabama Stakes in 2015.

Wildwood Rose has a 2-year-old filly named Divine Rose (Good Magic) and a filly by Not This Time, foaled on 21 March 2024.