Question: Who is the maternal grandmother of William Iii, Princely Count Of Henneberg-Schleusingen?
Sentence (from "William III, Princely count of Henneberg-Schleusingen"): The epitaph in Bolzano was sculpted by Erasmus Forster in Gardolo near Trento and installed in the Church in 1495 or 1496.
Relevant evidence: No