Aleksei Alekseevich Bobrinsky (1800-1868) by Franz Xaver Winterhalter, 1844
He was married to Sophia Alexandrovna Bobrinskaya née Samoilova. One of their sons was Aleksander Alekseevich Bobrinsky, see my other post here. His mother was Anna Bobrinskaya, see my post here.
source: Hermitage Museum