Sayyid

The tyrant rulers and their oppression on Ahlul Bayt (SS) and their descendants were behind migrations from Madina then from Iraq, Yemen, Iran and other places. The routes of migrations went to many direction on this earth. Ahlul Bayt descendants migrated whenever they faced dander from the tyrant rulers to different place on this planet. That us why, you find Sadat in almost all the continents whose grand fathers have migrated to different countries in Asia, Africa, Europe, Australia and the Americas.

Wassalam.

Father is not allowed to reject his daughter's marriage with a compatible believer when she wants to save herself from sin, just because of a cultural reason which is never a condition in Sharia.

I advise her to contact her Marje’ of Taqleed to explain to him his situation and seek him guidance.

You can get the email address of the main Maraaje’ of Taqleed in the Internet.

Wassalam.

Bani Hashim are the family of the Prophet Muhammad (SAWA) who have special rules in Islamic Sharia including the rule of obligatory Sadaqa being not allowed for any of them. Bani Hashim are all the grandchildren of Hashim who was the great grandfather of the Prophet (SAWA).

Sayyeds are known as children of Ali and Fatima (AS). Children of Imam Ali (AS) from other wives are from Bani Hashim but not from Fatima (AS).

Wassalam.

Sayyeds are from family tree of the Prophet Muhammad (SAWA) and we need to respect them from the sake of respecting the Prophet (SAWA) and Ahlul Bayt (AS) as far as they follow basic faith of the Prophet (SAWA) and Ahlul Bayt (AS). If a Sayyed disrespects or goes against the main facts and teachings of the Prophet and Ahlul Bayt (AS), he will not be entitled to receive the respect which he has gone against.

Piousness and Taqawi is the main criteria in Islam. Son of Prophet Noah was destroyed because he disobeyed his father. We have also in our history some Sayyeds who harmed Imam Jafar Al-Sadiq (AS) and tried to kill him like Al-Hasan al-Aftas الحسن الآفطس 

‘Pious Sayyeds deserve respect as much as they are pious in following the Prophet  (SAWA) and Ahlul Bayt (AS). Disobeying Sayyed is a sinner who can never like the pious Sayyed.

Wassalam.

There is no discrimination whatsoever in Islam neither in this life nor in the hereafter. Every believer will get the reward of there good deeds equally. Obviously same good deed has different degrees of sincerity which will be reflected in the reward of it. There is no discrimination at all because of ethnic or family matters. Allah Sats in Quran ( Every one will be getting his own deeds). Sura 52, verse 21.

Wassalam.

Husband must treat his wives equally no matter from what background they come from. The respect for Sayyida wife is must but it does not mean at all discriminating his other wife or ignoring justice in treating her. Practical justice in compulsory otherwise no permission to marry more than wife without practical justice between them.

Wassalam.

Marriage between Muslim man and Muslim woman is permissible unless it can harm their faith or religious practice. The family tree of Awan tribe can be verified by specialized in genealogy.

'Wassalam.

The correct Hadeeth No. is 4384 in the book "Manla Yahdharuhul Faqeeh", Volume 3, Page 393 does not prohibit marriage between any Sayyeda with any non-Sayyed, as it is very clear in the next Hadeeth No. 4385, which clearly states that marriage between believers is permissible without the condition of being Sayyed or non-Sayyed. The Hadeeth number 4384 should be read completely, it states that the Prophet (peace be upon Him and his holy progeny) looked at the children of Ali and Jaffar and said: Our daughters are for our sons and our sons are for our daughters. It means that this narration was talking about the direct children of Imam Ali and his real brother Jaffar. The Proohet (SAWA) wanted the daughters of Jaffar Ibn AbiTalib (AS) to marry the sons of Imam Ali (AS) as it is narrated from Imam Al-Ridha (AS) in the book Fiqh Al-Richa

Our great Ulama have gone through all the authentic narrations from Ahlul Bayt (AS)  and gave clear verdict that marriage between Mo'min and Mo'mina is permissible without the condition of the caste. Our great Sayyid Ulama have given their daughters for marriage with non-Sayyed believers which is a practical evidence that it is permissible.

Wassalaam

Not all of the names you mentioned in your question had really claimed Imamate,but it is a fact that some of the children or grandchildren of curtain imams did wrongly claim Imamate.The reasons behind that were mostly political and for gaining worldly benefits. All those who wrongly claimed Imamate had failed,despite the political and financial support from the rulers and governments of their times who were always interested and keen to create dispute between the followers of Ahlulbayt. Being a son or a grandson of the Infallible Imam does not mean that he is also an Infallible,we read in Quran how one of the sons of prophet Adam [AS] did kill his own brother. Al-madeena [5]. We also read in Quran about the son of prophet Noah who disobeyed Allah and his father.Hud[45]. It is worth mentioning that most of those sons of grand sons who did wrong have repented their mistakes.

wasalam.