Question: Who is the paternal grandmother of Michael, Prince Of Montenegro?
Sentence (from "Michael, Prince of Montenegro"): Prince Michael Petrović-Njegoš of Montenegro (14 September 1908 – 24 March 1986) was the third (but eldest surviving) son of Prince Mirko of Montenegro, Grand Voivode of Grahovo and Zeta (1879–1918), and Natalija Konstantinović, a cousin of Aleksandar Obrenović of Serbia.
Relevant evidence: Yes