Demercy genealogy, need help to make tree family name

Let discover together the meaning and history behind Demercy. Ask your questions, you’ll probably receive answers from your cousins, or historians. And please leave a message with your comments and what you know about Demercy surname.
Your family name is Demercy ? We need to discover the meaning and history behind your last name. Make with us the tree of Demercy family.
This page will be dedicated to the genealogy and origin of Demercy

Thank you.