Haven Cain's birth name is Haven Jude Cain.
Krisinda Cain's birth name is Krisinda Jeanette Cain.
Ace Cain's birth name is Horace Truman Cain.
Lynn Cain's birth name is Lynn Dwight Cain.
Sam Cain's birth name is Sam Wayne Cain.
Erin Cain's birth name is Erin Elizabeth Cain.
Lamont Cain's birth name is LaMont Terome Cain.
Cain was born first, followed by Abel. They were not twins; Cain was the firstborn and Abel was his younger brother.
If you are referring to Cain in the book of Genesis then nothing. Cain and Noel did not directly interact to my knowledge.
Cain Winstead's birth name is Richard Cain Winstead III.
Sugar Cain, but spelled cane.
No, Herman Cain is not single.