The famous eruption of Krakatoa was in the 1880s. It continues to be active.
OK ... looked it up. 1883.
Tambora (in the same general part of the world) blew in 1815.
Both had extended weather effects for a several months.
We hear about the big ones like Etna in Sicily that has been erupting for centuries. However, every once in awhile one like Mount St Helens or Vesuvius or Krakatoa really blows a billion tons of material into the sky and reminds us we are very insignificant.
Toba was the big one. Like Yellowstone. Almost wiped out humanity 74000 years ago