About Cypros .
the daughter of Antipater by Cypros was Cypros, whom Alexas Selcias, the son of Alexas, married; they had a daughter, Cypros... Josephus: Antiquities of the Jews XVIII Chapter 5 .http://religiousstudies.uncc.edu/people/jtabor/john.html
As far as I can see, this means that Salome I's son by her 3rd husband, married her granddaughter by her 2nd husband.
Hmmm those Herodians & their interbreeding!
& their granddaughter, Cypros, marries
[Sharon Doubell July 2013]