It makes me think of jam, because
Hartley's is the leading brand of jam here in the UK!
The founder of
Hartley's was the rather wonderfully named (Sir)
William Pickles
Hartley. Pickles was his mother's maiden name. That's one surname I can't see ever being used as a first name! ;)
As for
Hartley as a first name, it's not to my taste, but it's not awful. I've heard worse.
~Charley~
https://www.behindthename.com/pnl/184785