Ser

English doesn't differentiate between the verbs "ser" and "estar".

Today we are going to study the verbs “ser” and “estar”.

Demòra aqueste ser amb nosautres.

He was knighted and became Ser William.

"Ser Willem is a good man and true,” said Ser Oswell. “But not of the Kingsguard,” Ser Gerold pointed out.

Lady Mary – the Queen's handmaiden – was Ser Gawain's lady; her veil fluttered from his shoulder.

You don't strike me as an ordinary soldier, are you perchance Ser Lancelot Germaine of the Round Table?