I'm not sure a will exists, do you have any refs to one?I've done the following sources, with only the one erroneous Stephen result:
LDS film #18321NCRecord of wills, 1790-1924; cross index to wills, 1764-1946 no Stephen Daniell
LDS film #18310NCBrunswick Wills These are loose wills, 1810 and on, no Daniel(l) at all.
LDS film #1547991NCBrunswick Original Wills [seems like CRX, but not sure] no Stephen Daniell
LDS film #1673282NCBrunswick Estates Recds (these are CRX files) There is a file for Stephen Daniel, dated 1815.However, it contains docs concerning Capt. William Hall.I've seen this many times - folders for an estate that are actually for another person.I didn't note that Stephen was actually mentioned in any of the docs, but can't guarantee that, I didn't make my notes clear enough on this file.
Grimes' Abstracts of NC Wills, and the supplement don't show anything for Stephen either.
If Stephen did have any estate on record, it doesn't seem to be in Brunswick.I haven't tracked his Brunswick land so I don't know where he really is after 1810.
Good luck in your search! Pam in CA (not my line, but I did a lot of work on this line in the early days)