Rev. William Maskell was a mediaevalist and antiquary.
Maskell was a member of the Burlington Fine Arts Club, of which JW was a member until his resignation in 1867.
Lugt, Frits, Les marques de collections de dessins et d'estampes: marques estampillèes et écrites de collections particulières et publiques; marques de marchands, de monteurs et d'imprimeurs; etc..., Amsterdam, 1921, nos. 2640-1; Dictionary of National Biography, Oxford, 2004.