Changingoftheguard is out of Lady Lara (Excellent Art), a stakes winner and multiple Group-placed in England and a multiple graded stakes winner in the US, where she won the Honey Fox Stakes, then a Grade 2. He is a half-brother to Chantez (Wootton Bassett), winner of the Listed Ingabelle Stakes and third in the Gr.3 Brownstown Stakes.

Second dam Shanty (Selkirk) won once at two and bred two winners, the other being the dual winner Raise The Bet (Haafhd).

Third dam Pippas Song (Reference Point) was a single winner and bred five winners, among them the dual Listed winner Nightbird (Night Shift) and Edinburgh Knight (Selkirk), who won the Listed Hyde Stakes and was second in the Gr.3 Criterion Stakes.

Lady Lara has a two-year-old colt named Ziani (St Mark's Basilica) and a yearling filly by Churchill, and she was covered by Wootton Bassett last year.