In Chawosauria, the MacCarthy family (often referred to as the MacCarthians) are an Irish aristocratic family that resides with Chawosauria. The family originates from Ireland and live around the Anglosphere. The family got their surname from the MacCarthy dynasty although they're not related to the dynasty. Notable family members are Jonathan Sidney MacCarthy, Jonathan Sidney MacCarthy III, and Jonathan Lothian MacCarthy.

Demographically, the MacCarthys are Anglican by religion, and ethnically Irish, they practice Irish culture in holiday time, most notably St. Patrick's Day, the MacCarthys gather in Dublin, Ireland, for this holiday.