Lady Rose Mary Primrose McLaren (née Paget; 21 July 1919 – 1 November 2005) was a British aristocrat, the fourth daughter of the 6th Marquess of Anglesey.

[1] The Paget family (the Marquesses of Anglesey) resided in Plas Newydd and Beaudesert in Staffordshire until the house was demolished in 1931, due to financial difficulties.

[3] In her teens, Paget trained as a ballet dancer with Marie Rambert, and under the name Rose Bayly made her debut at Sadler's Wells in Swan Lake in 1937.

[4] After being largely educated at home, Paget led an unconventional life, being at different times a ballerina, a florist, a land girl and a countrywoman.

In her widowhood, McLaren became friends with Muriel Belcher (founder of the club, the Colony Room) and the artist Francis Bacon.