you are correct...in a way.. there were actually quite a number of Ptolemies, hence the Ptolemaic period... here is a run down taken from touregypt.net :
Ptolemaic Dynasty
This period is confusing due to all of the co-regencies. Scholars are not always in agreement on the order of reigns and, in some case, the reigns themselves, from Ptolemy VI through Ptolemy XI. In any event, Egypt's authority and wealth was intact until the death of Cleopatra, at which time, Egypt was overpowered by Rome.
Ptolemy I Soter I 323-285
Ptolemy II Philadelphus 282-246
Ptolemy III Euergeter I 246-222
Ptolemy IV Philopator 222-205
Ptolemy V Epiphanes 205-180
Ptolemy VI Philometor 180-164 163-145
Ptolemy VII Neos Philopator 145
Ptolemy VIII Euergetes II 170-163 &
145-116
Cleopatra III & Ptolemy IX Soter II 116-107 &
88-80
Cleopatra III & Ptolemy X Alexander I 107-88
Cleopatra Berenice 81-80
Ptolemy XI Alexander II 80
Ptolemy XII Neos Dionysos 80-58 &
55-51
Berenice IV 58-55
Cleopatra VII & Ptolemy XIII 51-47
Cleopatra & Ptolemy XIV 47-44
Cleopatra VII & Ptolemy XV Cesarion 44-30 BC
Kinda a little more so that you will know who is who:
This period started just after Alexander the Great and the cleopatra that we all know is Cleopatra VII & Ptolemy XIII and XIV were her brothers and were both very young when she married them. Ptolemy XV is her son by Julius Caesar After Cleo's death, Caesar's nephew Octavian than became ruler (he was Roman where as Cleoaptra and the rest were Greeek.
PS sorry about the spelling, I am typing with a smoke in one hand, you should get the jist though.
PPS if you go to
www.touregypt.net/kings.htm you can get a full listing of all kings/Pharoahs and you will see that there are quite a number with the same names which makes it very cnfusing, at least to me
