More to explore:
Greencastle, Pennsylvania. Evaline McLean was born in Greencastle in 1805.
Isle of Mull, Scotland Home of the Clan Maclean .... Duart Castle and the Isle of Mull
FamilySearch info on Allegheny County, Pennsylvania - huge amount of links - includes links to newspapers
McLean family crest Scotland genealogy
Adm. Walter McLean (LOC)
MCLEAN FAMILY CREST - COAT OF ARMS gifts at www.4crests.com
Clan Maclean (from which "McLean" derives) tartan