All that can presently (July 2023) be gleaned about The Ormonde Sisters from sheet music covers and by Internet searching is that they were presumably American actress/singers who have been featured on 2 works published in 1927.
Their portrait on the left is taken from Hello Cutie (1927) words & music by Cliff Friend, and published by Jerome H. Remick & Co., New York & Detroit, USA.
Surfers are welcome to contribute any further information about these performers.