Verifying a writing

Last year I was asked to help verify a historical document and was given a page of the document along with 4 pages of the person it was hoped wrote the document. The person asking for the verification had done some of the work trying to prove his case but not enough. There are some letters similar in both writings but they may have been copybook at that time period. To make comparison even harder the questioned document was on parchment, written probably with a quill instead of a pen, and the writing was done smaller. After much work I concluded the document was not written by the person we hoped and gave my reasons for this conclusion. But I sure would like to learn who actually did write the document.