DIANE
I HAVE FOUND THE SPELLING OF DENICE IN MY SEARCHING OF MY SURNAME OF DENISE, I BELIEVE THAT YOUR DENICE IS PROBERLY JUST ANOTHER SPELLING OF DENYSE, DENISE, DENYSS, AND OTHER SPELLINGS. PEOPLE CHANGED THE SPELLING OF LAST NAMES MANY TIMES OVER THE YEARS.
MY FOREFATHERS CAME FROM THE NEW YORK CITY ALSO BACK IN 1638.
MAYBE YOU WOULD FIND INFORMATION IF YOU MADE YOUR SEARCHES WIDER.