The name Kerensa is a girl's name of Cornish origin meaning "love". Kerensa and is often added to lists like Unique Baby Names: Unusual and Rare and discussed in our forums with posts like "A brother or sister for little Jack or Olivia".
From the experts:
Kerensa, forever exotic, is a romantic Cornish name spelled with an 's' or 'z', the most modern of the Karen family. Kerensa (or Kerenza) has ties to the Welsh Cerys.
Kerensa is a name favored by novelists who are using a Cornish setting, such as Victoria Holt in The Legend of the Seventh Virgin.
The Kerenza spelling has a bit more zip.