Original post by TawheedThe issue here is, no Imam before the fifth Imam a.s named their child Ubaydallah. infact, Abdullah is a far more common name with similar meaning. Is it not strange for Imam Muhammed Baqir a.s, to name his child UbaydAllah, knowing full well his father , Imam Zain Al Abideen, was tied in chains, imprisoned, and his grandfather Hussain a.s slaughtered on the plains of Kerbala, and the decapitated head of Hussain ibn Ali a.s played with the commander on the day of Kerbala, Ubaydallah ibn Ziyad ?
Similarly, the seventh Imam a.s also named a son Ubaydullah. I have yet to meet a born-shia who is named Ubaydullah today.
The issue is, from Abdullah, Umar, Uthman, Ubaydullah, these are all names, even if the names themselves have meanings - at the end of the day, they are all names.
I will answer your other points, but i would like to ask - Ubaidullah, a name that had never before been used before Kerbala by the imams a.s, or before the Fifth Imam a.s, a name after arguably the most famous/infamous ubaydallah - the commander who caused and ordered the most viscious slaughter of Hussain a.s, was used by the very Imam a.s who absolutely felt the affects and heard the tragedy of Kerbala his father and grandfather suffered, as well as by the seventh imam a.s, itself lends strong evidence that even if there is someone who is infamous , it does not mean they are named after them.
As you have said this could be an exception, that both the fifth Imam a.s, the grandson of Hussain a.s, and the son of Imam Zain Al Abideen (both suffered at the hands of Ubaydullah, who even palyed with the decapitated head of Hussain a.s , in the most humuliating fashion), as well as the seventh Imam a.s were exceptions, i take you to another name:
Abdurahman ibn Muljim, the man who slaughtered Ali ibn Abi Talib a.s, the man who enabled shariah law, and like-for like one strike death penalty to be carried out on Abdurahman ibn muljim according to some sources, was Hasan ibn Ali a.s, the eldest son of Imam Ali a.s
Yet, we find Hasan Ibn Ali a.s has named one of his sons Abdurahman. Ali ibn Abi Talib a.s was matyr'd around 661. Kerbala took place in 680 AD.
Many of the children of Imam Hasan a.s were matyrd in Kerbala, many were too young too fight. However, we do not find the name of Abdurahman, suggesting that he may have been too young during the battle of Kerbala, or not in a state where he could, like Qasim, fight, or perhaps not even present. It is likely he was born after the death of Ali ibn Abi Talib a.s, and thus after Abdurahman ibn Muljim struck Ali ibn Abi Talib a.s with the posioned sword during Sujood.
Would i name my child after a man who killed my father, and whom i, sought retribution from myself in shariah in those days ? Again, similarly to ubaydullah, very few shia's if at all (i have yet to meet a born shia) are named Abdurahman, even though the name means something good, at the end of the day, like Umar, like Zayd, these are still names, irrespective what they mean.
I do owe you a reply on your other points, in addition i and am currently working to compile the shia narrators of ahadith named with the Qunya Abu Bakr (because even these Abu Bakrs, have real names), Umar, Uthman, Muawiyah, and Yazid.