Dear Aaron,

The website https://www.gov.uk/search-will-probate enables you to search for a UK probate record and obtain a copy of the record and of a will, if there is one.  I did a search and found Michael's probate record from 1919 which shows that he died on 23rd October 1918.  I assume you already have a copy of this via Ancestry but if not you can reach it via the above website.

As for vital records, UK birth certificates record both father's and mother's names, but of course that's not much use if Michael was born elsewhere!  Marriage certificates record only the father's name.  It might be worth searching UK newspapers to see if you can find any further information about Michael.

Not sure this helps you much, but good luck in your search!

Kind regards, Philip Tepper (Manchester, UK)