However , soon Grand Duke 's court was severely backlogged and became clear that reforms are needed .
After the legal reforms of 1563 -- 64 , members of the Lithuanian nobility received the right to appeal to the Grand Duke .
Soon Grand Duke 's court was severely backlogged and became clear that reforms are needed .
After the legal reforms of 1563 -- 64 , members of the Lithuanian nobility received the right to appeal to the Grand Duke .