Dennis became Director of the Woburn Square Gallery at virtually the same time as I arrived with the collection from Princes Gate. I remember with appreciation his friendliness, his perception of my role and his kindness in letting me get on with it. He shouldered heroically many of the everyday administrative tasks while I enjoyed the preparation of exhibitions. His calmness and good nature characterised the whole of a challenging directorship.

In 1999, after his retirement, Dennis and Diana invited me to Haslemere for the day. He had organized a pilgrimage for the two of us to nearby Frensham Place, the house where Count Antoine Seilern was born and spent the first few years of his life. It now houses Edgeborough School, whose staff made us welcome and allowed us to wander, take photographs and make the most of a melancholy and memorable visit.

Helen Martin-Leake