The Templeton Cahills are a family within the Cahill family, mentioned by Beatrice Cahill in Nowhere To Run. Though the family employed the services of William McIntyre's law firm, they did not send a representative to his funeral. It is unknown which branch of the family the Templeton Cahills belong to, if they are involved in Cahill activity, or even if they are know about their family's historic legacy.
Based on their name, the Templeton Cahills may live in Templeton, Massachusetts.