Bhishmaka was the King of Vidarbha and father of Rukmini, who married Krishna. The question uses 'Beeshmaka' which is an alternate spelling. Duryodhana's father-in-law was Bhurisravas, Jayadratha married Duryodhana's daughter Dussala, and Arjuna had multiple wives including Subhadra (Krishna's sister).