Asa, since
Ira looks like IRA. They both feel elderly, scholarly, bearded, and very religious, though
Asa is quieter, and
Ira is more gruff. Their sisters would also have biblical names, say,
Ruth and
Miriam.
masculine list:
https://www.behindthename.com/pnl/191050/124079feminine list:
https://www.behindthename.com/pnl/191050/124080