All wrens belong to a family called "Troglodytidae.".    From Wordnik.com.  [columbiatribune.com stories] Reference

Given their strong similarity to definite wrens, it’s almost certain that ‘mystery wrens’ really are wrens: that is, members of Troglodytidae.    From Wordnik.com.  [Archive 2006-05-01] Reference

Troglodytidae.    From Wordnik.com.  [Bird lists] Reference