Question: Who is Murong De's paternal grandfather?
Sentence (from "Murong De"): After Murong Chui's son Murong Bao lost most of Later Yan's territory to Northern Wei, Murong De took troops under his own command south and established Southern Yan, which secured modern Shandong, but failed to expand further, and was destroyed by Jin Dynasty (265-420) after Murong De's death and succession by his nephew Murong Chao.
Relevant evidence: No