Yes, so long as the conversion is genuine. Check with your coptic priest in case of any additional requirements, such as catechism (instructions in the faith).
St. Peter was a married priest.
No. At least not fully. You need to talk about individual cases with your priest
He has married many but has never been married who is he
It depends on what kind of parish. If he is Catholic, then no, he can not marry because he is already "married" to mother church. However, if he is an Ipiscable priest and is married, but deciedes to become Catholic, then he may be a married Catholic priest.
There are many priests who got married. Martin Luther is one of the most well known priest who got married.
he still a priest and shld not get married
Yes. To do this, you will need to speak to a Greek Orthodox priest who will advise you of the process, which is usually fairly easy.
Jacques Marquette was a priest and not married.
No. He was a priest and was never married.
No, Ninian was a priest and never married.
Sheik Millawi en Faro, or Nuwan Al Millawi is an Egyptian Coptic priest. A Lawi or village priest. Millawi being a town in Southern Egypt. Alternatively Millawi is spelt as Millavi.