The Collaborative International Dictionary of English v.0.48:

Kinsman \Kins"man\ (k[i^]nz"man), n.; pl. Kinsmen
   (k[i^]nz"men).
   A man of the same race or family; one related by blood.
   [1913 Webster]

Moby Thesaurus II by Grady Ward, 1.0:

42 Moby Thesaurus words for "kinsmen":
   agnate, ancestry, blood, blood relation, blood relative, clansman,
   cognate, collateral, collateral relative, connections,
   consanguinean, distaff side, distant relation, enate, family,
   flesh, flesh and blood, folks, german, kin, kindred, kinfolk,
   kinnery, kinsfolk, kinsman, 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