col-lībertus (conl-), i, m.,
a fellowfreedman , Plaut. Poen. 4, 2, 88; Cic. Verr. 2, 5, 59, § 154 dub.; Dig. 36, 3, 18 al.
con-lībertus (coll-) ī, m a fellow-freedman. ...
An Elementary Latin Dictionary