Baroness Myriam Ullens, 70 - whose body was discovered on Thursday morning - was with her husband, Baron Guy Ullens, 88, when she was killed in the village of Ohain.
The Belgian art collector and baroness, Myriam Ullens de Schooten, was killed outside her home in Lasne-Ohain, south of Brussels, on Wednesday morning, report Belgian media.
Baroness Myriam Ullens, 70, was with her husband, Baron Guy Ullens, 88, when she was killed in the village of Ohain by Nicolas Ullens, who has since been detained by police.