A will is another document where knowledge of the old handwriting script is almost essential. Some of these ancient handwriting samples can be almost illegible. Take a magnifying glass with you to assure you can read even the smallest of handwriting. Don't be surprised if you find wills with only an X as the signature. This was perfectly legal as long as it was witnessed.
Wills can be classic documents and sometimes very entertaining.
You will be amazed at some of what you might consider nit-picking detail that is included. In an age where possessions meant as much as money,a will provided a way to pass those items of legacy on to another generation. Most people think that applies to perseverance. It can apply to paper too.