The portraits in the National Portrait Gallery, London, are: one
by James Lonsdale,
another by Lemuel Francis Abbott, 1797.
Another, from 1771, is by Mary Moser (Nollekens standing with
one of his sculptures.) Another, still, from 1800, is by William
Beechey. John Francis Rigaud painted 'Portrait of Joseph Nollekens
1737-1823 the sculptor with a bust of Laurence Sterne 1713-68'.
John Jackson made one.
Sorry about the initials DD, cannot find any. === ===