Vipsania Agrippina
Her father Agrippa died in March 12 BC. He was then married to his third wife, Julia the Elder, daughter of Augustus. Augustus forced Tiberius to divorce Vipsania and marry Julia.  Tiberius reportedly loved Vipsania and disapproved of Julia. Vipsania was pregnant with a second child in 12/11 when the couple divorced.  The second child did not survive.