Conversation so far:
Whose mistress was Lillie Langtry?
The Prince of Wales became infatuated with Langtry, and she soon became his mistress
How did Lillie Langtry and The Prince of Wales meet?
The Prince of Wales, Albert Edward (Bertie, later Edward VII), arranged to sit next to Langtry at a dinner party given by Sir Allen Young on May 24, 1877
How long did Lillie Langtry and the Prince of Wales' affair last?
Lillie's liaison with the Prince lasted from late 1877 to June 1880
Why did Lillie Langtry and the Prince of Wales' affair end?
Although remaining friends with the Prince, Lillie Langtry's physical relationship with him ended when she became pregnant.
Did Lillie Langtry have affairs with anyone else?
In July 1879, Langtry began an affair with the Earl of Shrewsbury

Question: What was the child's name?
Self-contained rewrite: What was Lillie Langtry's child's name?