Are you talking about Zenaida Ivanovna Naryshkina? She was born in 1809, and felix was born in 1887. So, you are saying Zenaida Ivanovna's mother had another child almost 80 years (more or less) after Zenaida was born???...Interesting
Yes, I am referring to my great-great-aunt Zenaida Ivanovna Narishkina (Felix's great-grandmother), who was born November 2, 1809, and who died October 25, 1893. Here, let me help you:
My father was Vadim Alexandrovitch Narishkin (born December 26, 1891, died in March 1952). His father was Alexander Dimitrievitch Narishkin (born January 8, 1851, died August 10, 1894). He was the son of Dimitri Ivanovitch Narishkin (born April 17, 1812, died March 1, 1866) who was the only sibling of Zinaida Ivanovna Narishkina. Their parents (and therefore Felix's and my great-great-grandparents) were Ivan Dimitrievitch Narishkin (born April 17, 1776, died April 15, 1848 ) and Varvara Nikolayevna Narishkina née princess Ladomirsky (born May 17, 1785, died November 26, 1840).
So, what's your problem with that, and whence did you pull out the notion that Zinaida's mother (Felix's and my great-great-grandmother) had another child 80 years after Zinaida Ivanova's birth?