Perhaps I can save someone else the time of doing a reverse image search:

This portrait is showing English poet Christopher Anstey with his daughter Mary Ann and was painted by William Hoare, circa 1776. It‘s on display in room 18 on floor 3 at London‘s National Portrait Gallery.

Any more context?? I wanna show this to my own very distracting daughter

It's a lot of work to go through just to show your teenager's friends embarrassing pictures of her, but it's worth it!

Poet and satirist Christopher Anstey and his daughter

This is a really stupid question, but did the man and his daughter pose like that for hours?

Nice picture, morning.