I have some friends who are twins.
Patrick "
Pat" and
Timothy "
Tim" are identical, but are easily told apart. On the other hand,
Chelsea and
Courtney are not identical but people have trouble telling them apart and sometimes even mix up their names (
Pat actually feels bad because even though he's a twin himself he still mixes them up). The excuse? Their names are too similar. So yes, I have heard people complain about twins having matching names.