11.12.1810 theatre, w. M(ary) J(ane), Isabella & X.Y.Z.
X.Y.Z. was a new farce thought to be the production of Colman (Morning Chronicle 12.12.1810). Isabella (or the Fatal Marriage) was a play by Thomas Southerne DNB 1660-1746 adapted from a novel by Aphra Behn. On the GD website there is a play record for it tagged to 13.2.1796 but not to most of the other dates on the record.