ISB ~ 2 Timothy 1 v5

your grandmother Lois:Otherwise unknown.

your mother Eunice:A convert from Judaism who had instructed her son in the OT Scriptures since his childhood (3:15). Timothy’s father was a Greek and may not have become a Christian (Acts 16:1). In any case, Paul is encouraged by the faith that Timothy inherited from the godly women of his family (CCC 2220).