El Emir photo

Jenny Krieg, referring to a discussion on straightegyptians.com in 2007, tells me that it seemed that the late Lady Anne Lytton apparently told Carol Mulder, who told someone else (who was writing on se.com under the username “BasilisBelka”) that the famously ugly photo of Mrs. Dillon’s imported Arabian stallion El Emir (below) was not of him, nor of an other Arabian horse but rather that of an English Lord’s carriage horse. Can this be confirmed?