In what year was the oldest partner of the 2015 Russian national champion ice dancers born?
Ruslan Zhiganshin: Ruslan Nailevich Zhiganshin (Russian: Руслан Наильевич Жиганшин ; born 25 September 1992) is a Russian ice dancer. Ruslan Zhiganshin:  With partner Elena Ilinykh, he is the 2015 Russian national champion. Elena Ilinykh: Elena Ruslanovna Ilinykh (Russian: Еле́на Русла́новна Ильины́х ; born 25 April 1994) is a Russian ice dancer. Elena Ilinykh:  With partner Ruslan Zhiganshin, she is the 2015 Russian national champion.
1992