....and you made me curious to know more about Jane Pope.

Wikipedia tells us the following:

Jane Pope (1742 - 30 July 1818) was an English actress, daughter of a London theatrical wig-maker, who began playing in a Lilliputian company for Garrick in 1756. From this she speedily developed into soubrette roles. She was Mrs Candour in The School for Scandal at its first presentation (1777), and thereafter she had many important parts given to her. She was the life-long friend of Mrs Clive, and erected the monument at Twickenham to the latter's memory. She was an admirable actress and was praised by all the literary critics of her day unused to such a combination.

I also found an excerpt from the London Mercury stating that Lamb (I presume, Charles Lamb) described her as "the perfect gentlewoman of comedy".