Evidence for this? I can’t think of an example offhand. However, there were Reformers who never seem to have been ordained–Calvin is the most famous example. It appears that he considered his call to serve in Geneva as equivalent to an ordination (and it’s not surprising that the person who issued the call, William Farel, doesn’t seem to have been ordained either). However, it was important to him–as to the Reformers generally–that he *was *called and did not simply assert authority on his own behalf.
You will have a lot more trouble finding anything like “self-ordination” among the Lutherans, I think.
Most of the Reformers–Calvin and Farel being obvious exceptions–were already ordained in the Catholic Church.
as do the founders of every Protestant Denomination.
Not true. John Wesley, for instance, was an ordained presbyter of the Church of England. And the founders of the Methodist Church in the U.S. were ordained by Wesley and/or other Protestant clergy.
It’s true that Protestants generally (with the obvious exception of Anglicans–to whom again Wesley is an exception the other way in spite of never leaving Anglicanism!) reject the distinction between presbyter and bishop, so they see no need for a distinctly episcopal succession. And some of the more free-church Protestants further see no need to have ordination performed by ordained clergy, giving this authority to the congregation. But that is not the same thing as self-ordination. If you have any examples of self-ordination, please name them!