A portrait of Oonagh Guinness by Philip de Laszlo, estimated at $30,000-50,000 at Ahlers & Ogletree.

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Among the highlights of the paintings will be this 1931 portrait by Philip de Laszlo (1869-1937) of Oonagh Guinness, an Anglo-Irish society hostess and art collector who was the daughter of Sir Ernest Guinness and later lady Oranmore and Browne.

The painting hung in the drawing room at Luggala, her home in Co Wicklow, Ireland, until her death in 1995 when it was sold from her estate.

The 4ft 4in x 3ft 3in (1.3m x 99cm) oil on canvas is signed and dated 1931 and has paper labels to the reverse for the Galeries Charpentier and the Christopher Wood Gallery and is included in the de Laszlo catalogue raisonné.

Estimate $30,000-50,000.