How do I incorporate these family names with some of these first names?

Jacoby David sounds good any name sounds good with david as the middle name Brendan Cyr (if i pronounce the middle name correctly it sounds good to me) Brennan Dennis...It really also depends on the sirname too, whats your boyfriends last name you know? But Murl...ummm thats going to be hard. as for the girls Gracelyn Elizabeth is a gorgeous name! Eliana Janine sounds ok. Addison or Alexa Jocelyn. Eliana Diane sounds good too. Good luck!