The Collaborative International Dictionary of English v.0.48:

Clansman \Clans"man\, n.; pl. Clansmen.
   One belonging to the same clan with another.
   [1913 Webster]

WordNet (r) 3.0 (2006):

clansman
    n 1: a member of a clan [syn: clansman, clanswoman, clan
         member]

Moby Thesaurus II by Grady Ward, 1.0:

42 Moby Thesaurus words for "clansman":
   agnate, ancestry, blood, blood relation, blood relative, cognate,
   collateral, collateral relative, connections, consanguinean,
   distaff side, distant relation, enate, family, flesh,
   flesh and blood, folks, german, kin, kindred, kinfolk, kinnery,
   kinsfolk, kinsman, kinsmen, kinswoman, kith and kin, near relation,
   next of kin, people, posterity, relations, relatives, sib, sibling,
   spear kin, spear side, spindle kin, spindle side, sword side,
   tribesman, uterine kin