Question: Who is Armin, Prince Of Lippe's maternal grandfather?
Sentence (from "Princess Anna of Ysenburg and Büdingen"): Princess Anna of Ysenburg and Büdingen (10 February 1886, Büdingen – 8 February 1980, Detmold) was the youngest child of Bruno, 3rd Prince of Ysenburg and Büdingen and his wife, Countess Bertha of Castell-Rüdenhausen.
Relevant evidence: Yes