What artist has initials HH circa 1890?

The artist with the initials HH from around 1890 is likely Hans Holbein the Younger, a German-Swiss painter known for his detailed portraits and work in the Northern Renaissance style. However, if you are specifically looking for an artist who fits the initials HH, it may also refer to other artists of that time period, but Holbein is the most prominent one associated with those initials.