Probably the nephew of Thomas Wallis I.
May have shared the Monkwell Street premises with Thomas Wallis I in the 1778-1780 period but otherwise all addresses are Red Lion Street, Clerkenwell
See
http://www.925-1000.com/forum/viewtopic ... 74&t=23729" onclick="window.open(this.href);return false;
WALLIS, Thomas II (Grimwade p.692, 770, 403)
Moderators: buckler, MCB, silverly
Re: WALLIS, Thomas II (Grimwade p.692, 770, 403)
Recorded as Wallis and Hayne, Wholesale Silversmiths of 16, Red Lion Street, Clerkenwell.
Source: Johnstone's London Commercial Guide - Corrected to 31st August 1817 - Andrew Johnstone - 1818
Source: Johnstone's London Commercial Guide - Corrected to 31st August 1817 - Andrew Johnstone - 1818