I'm looking for one of my ancestors for quite some time now. His most common name is 'Fredericus Antonius de kuijffer' and he should be born around 1718 (he died in 1790 in Rupelmonde at the age of 72, as written on his death certificate). On his death certificate and some of the birth certificates of his children is mentioned that he is "ex Maesyck" (what should mean that he was born in or originated from Maaseik in Belgium). However on his own marriage certificate is mentioned that he originated from 'the meierij of 's Hertogenbosch' in Holland. A search in both countries however resulted in nothing.
Could you please help me?!
Thanks in advance!