Finding certificates of marriage/death in Europe late 18C

Have you thought about contacting the relevant authority, the town hall perhaps, in Turin and Liege? Or there are genealogists who take on this sort of work.
My family are from Europe too, so I haven't really got far but knowing the religion helps.

Try Suzanne Russo Adams at Family Search who should be able to point you in the right direction.

She is a Senior Content Strategist with responsibilities for record acquisition strategy for Europe.

Her specialism is Italy but she should be able to put you in touch with her counterpart on Belgium.

www.apgen.org/users/suzanne-russo-adams

has her email address or use the Find a Professional option top left which lists a Peter Eyckerman for Belgium.

Thank you for this excellent advice. I've already emailed Suzanne Russo Adams and will try Peter Eyckerman. I'm not a genealogist and hadn't heard of Apgen - just what I wanted!

Have you tried Family Search
www.familysearch.org/en/blog/free-access-to-top-european-family-history-website
It is a free site.

Thank you, jeanie. I've just had a look and it seems that joining is free and automatically makes one a member of the Mormon church (and I do not know what unwanted messaging that might entail) and then to go much beyond that is fee-paying.

Had the person who died in Liege in 1783 lived there all their life? If so, and you have the address, then the Catholic church should be able to find a parish register that records the person's baptism, marriage and date of death, unless the parish concerned lost their records during the French Revolution.

Turin is more complex - but Sardinia-Piedmont or Piedmont-Sardinia was likewise a Catholic kingdom at that time so the marriage of two Protestants must either have taken place in a Protestant chuch if any existed there at that time, or in a consulate or embassy of a Protestant kingdom in Turin, as I doubt that civil marriage existed there then.

If you know the nationality of the Protestant couple either a historian working mainly with diplomacy of the time or a historian of religion specialising in Protestant minoirities in the area might just be able to help you. If you know the birthplace of one of the two who married in Turin the church where either was baptised may have an annotation in the parish register of the person's subsequent marriage.