Carramer Legacy [manga] Series 1 Crowns and a Cradle 2 The Baron & the Bodyguard or Carramer no Yumemonogatari II 3 The Marquis and the Mother-To-Be or Prince no Shukumei Summary
It says Carramer Legacy 2 on the cover, but it's not on the list of official novels (and #2 is "The Prince's Bride-To-Be"), but I've included it on my list because he is a Carramer prince.