Roger Snethlage defines Anna Sophia Bruns (1716-1785) as wife of Adam Mellinghoff in accordance to the family book of Kettwig:
https://www.ortsfamilienbuecher.de/famreport.php?ofb=kettwig&ID...
Unfortunately this entry doesn't show Adam Mellinghoff as husband.
Alternative wife is shown here:
https://www.ortsfamilienbuecher.de/famreport.php?ofb=kettwig&ID...
(birth date before 1707 appears to be unrealistic).
See also:
http://heidermanns.net/gen-pers.php?ID=67205