Krpacarya later became a great general like Dronacarya, and his sister was married to Dronacarya

Expressions researched:
"Krpacarya later became a great general like Dronacarya, and his sister was married to Dronacarya"

SB Canto 1

Kṛpācārya later became a great general like Droṇācārya, and his sister was married to Droṇācārya.

SB 1.12.13, Purport:

Kṛpācārya is the son of the great Ṛṣi Sardban and was born in the family of Gautama. The birth is said to be accidental. By chance, the great Ṛṣi Sardban met Janapadī, a famous society girl of heaven, and the Ṛṣi Sardban discharged semina in two parts. By one part immediately a male child and by the other part a female child were born as twins. The male child was later on known as Kṛpa, and the female child was known as Kṛpī. Mahārāja Śantanu, while engaged in chase in the jungle, picked up the children and brought them up to the brahminical status by the proper purificatory process. Kṛpācārya later became a great general like Droṇācārya, and his sister was married to Droṇācārya. Kṛpācārya later on took part in the Battle of Kurukṣetra and joined the party of Duryodhana. Kṛpācārya helped kill Abhimanyu, the father of Mahārāja Parīkṣit, but he was still held in esteem by the family of the Pāṇḍavas due to his being as great a brāhmaṇa as Droṇācārya. When the Pāṇḍavas were sent to the forest after being defeated in the gambling game with Duryodhana, Dhṛtarāṣṭra entrusted the Pāṇḍavas to Kṛpācārya for guidance. After the end of the battle, Kṛpācārya again became a member of the royal assembly, and he was called during the birth of Mahārāja Parīkṣit for recitation of auspicious Vedic hymns to make the ceremony successful. Mahārāja Yudhiṣṭhira, while quitting the palace for his great departure to the Himalayas, entrusted Kṛpācārya with Mahārāja Parīkṣit as his disciple, and he left home satisfied because of Kṛpācārya's taking charge of Mahārāja Parīkṣit. The great administrators, kings and emperors were always under the guidance of learned brāhmaṇas like Kṛpācārya and thus were able to act properly in the discharge of political responsibilities.