Maybe there was a Maunder Minimum and may be it was only the result of some missing data. Willis Eschenbach, does the analysis.
Guest Post by Willis Eschenbach
Well, as often happens I started out in one direction and then I got sidetractored … I wanted to respond to Michele Casati’s claim in the comments of my last post. His claim was that if we include the Maunder Minimum in the 1600’s, it’s clear that volcanoes with a VEI greater or equal to 5 are affected by sunspots. Based on my previous analysis I figured “No way!”, but I thought I should take a look … and as is often the case, I ended up studying something entirely different.
Now, the SIDC monthly sunspot record that I used in my last analysis starts in 1700. Prior to that the only sunspot numbers available are a “reconstruction” by Hoyt and Schatten called the “Group Sunspot Number”, which is the dataset used by Michele. The Hoyt/Schatten Group sunspot data is available here. Now, as…
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The Next Grand Minimum 
Not sure sun spots cause volcanism – directly, but maybe sunspots are caused by gravitation effects and these same universe wide gravitational effects cause volcanism on earth…
Dennis, sunspots are created by: close to the center of the sun, where fusion is done – the explosions pick up some heavier gases and shoots them to the surface (most of it is carbon) Same as nuclear bomb shoots from the ground lots of dust up to 10-20km upwards. Sunspots are on the sun /volcanoes are on the earth and other planets. It’s already known in details; why and how the volcanoes are happening. Confusing sunspots with volcanoes is same as me farting here in Australia -> to shake your bed in England…. not eve I can do that…
Those carbon ”blotches / sunspots” sink again deep down into the hydrogen plasma pretty quickly. Sunspots are now interpreted as thunder in the sky was interpreted that: St. Peter is angry -> you better pay your taxes to the bishop, or else!!!