Johann Kerseboom (d.1708) was the nephew of Frederick Kerseboom and first worked in Germany before coming to England in the 1680's where his sitters included the 'Electress Sophia Dorothea' (known from a mezzotint by William Faithorne). His early works were influenced by William Wissing through his early collaboration with him but he developed his own style, demonstrated in his portrait of 'Robert Boyle', of which several versions are found in the Royal Collection and the National Portrait Gallery.  

He collaborated with his close friend Jan Van der Vaart on works such as the portrait of 'Thomas Osborne, First Duke of Leeds' (1704, London NPG) and the portrait of 'Gilbert, Fourth Earl of Coventry' ( dated 1704, Antony House, Cornwall) which is signed by both artists. More »
 

This portrait was painted when the sitter was three years and six months old, according to a mezzotint of the painting by William Faithorne, c.1695, which confirms the identity of the sitter and artist. A copy of this mezzotint is held by the National Portrait Gallery, London and the Royal Collection. The canvas is framed in the same magnificent original 'Longleat' frame, seen on many other portraits which remain at Longleat House, Wiltshire, the family seat of the 7th Marquess of Bath. More »