Eldest son of Prince Pavel Pavlovich Galitzine (b. St. Petersburg, 18 May 1856, d. St. Petersburg, 13 Apr 1916) and wife (m. Dugino, 29 Jun 1887) Princess Alexandra Nikolaievna Meshcherskaya (b. Moscow, 28 Sep 1864, d. Budapest, 7 Jul 1941), had three older sisters, two younger sisters and one younger brother.