The sons-in-law of the Prophet (peace and blessings of Allah be upon him)
Question

Who are the sons-in-law of the Prophet (peace and blessings of Allah be upon him) who married his daughters?.
Praise be to Allah.The Prophet (peace and blessings of Allah be upon him) had four daughters, all of whom were born from Khadeejah (may Allah be pleased with her): 
1 – Zaynab (may Allah be pleased with her); she was the oldest of his daughters. She married Abu’l-‘Aas ibn al-Rabee’ (may Allah be pleased with him) and she bore him ‘Ali and Umaamah. She died in 8 AH. 
2 – Ruqayyah (may Allah be pleased with her). First she married her cousin ‘Utbah ibn Abi Lahab, then he divorced her before consummating the marriage with her, when Allah revealed the words, “Perish the two hands of Abu Lahab” [Soorat al-Masad, 111]. Then she married ‘Uthmaan ibn ‘Affaan (may Allah be pleased with him), and she migrated with him to Abyssinia, then to Madeenah. She fell sick at the time when the Prophet (peace and blessings of Allah be upon him) went out for the battle of Badr, and he ordered ‘Uthmaan (may Allah be pleased with him) to stay with her, but he allocated him his share of the booty, and rewarded him for the battle as if he had been present. When the good news of the Muslims’ victory at Badr came, they had just finished burying her (may Allah be pleased with her). She bore ‘Uthmaan (may Allah be pleased with him) 'Abd-Allah who died when he was six years old. 
3 – Umm Kalthoom (may Allah be pleased with her). First she married ‘Utaybah ibn Abi Lahab, who divorced her before consummating the marriage as his brother ‘Utbah did with Ruqayyah (may Allah be pleased with her). When Ruqayyah died, the Prophet (peace and blessings of Allah be upon him) married Umm Kalthoom to ‘Uthmaan (may Allah be pleased with him). She died in 9 AH and did not bear him any children. 
4 – Faatimah (may Allah be pleased with her). She was the youngest of the daughters of the Prophet (peace and blessings of Allah be upon him). She was married to ‘Ali ibn Abi Taalib in Safar 2 AH. She bore him al-Hasan, al-Husayn, Umm Kalthoom and Zaynab. Faatimah (may Allah be pleased with her) died six months after the Prophet (peace and blessings of Allah be upon him). She was the first member of his family to join him, as He (peace and blessings of Allah be upon him) said she would be. 
See al-Bidaayah wa’l-Nihaayah by Ibn Katheer, 5/321; Zaad al-Ma’aad, by Ibn al-Qayyim, 1/100 
And Allah knows best.