His Proposal

Each member of the council fell into contemplation.

A person could even hear a pin drop because of the silence.

As members of the Conclave Council, they knew everything in the 'The List', the Founder left. They did not question it because they had deep roots within the Conclave.

However, after hearing that the Founder also had a wish that he entrusted only with the Tower Family's future Time Keeper, they realized how little they really knew about him.

In The Conclave, only the council members were aware of what the public knew as the Forbidden Magic was actually Ancient Magic. 

They also knew that the Tower and the Regis Families could birth a mage with ancient magic, Draconic and Time Magic.

Whether it was a coincidence that the Founder of Conclave had deep relations with both families was unknown. They did not think much about it as well. This proved how much they believed and trusted the Founder.