祖(そ)父(ふ) sofuは wa祖(そ)母(ぼ) soboが gaぽっくり pokkuri逝(い)っ()て() itteから kara急(きゅう)に() kyuuni老(ふ)け()込(こ)み()ま()し()た() fukekomimashita。 My grandfather suddenly grew old and frail after my grandmother passed away out of the blue. agedeathfamily~てから (after doing)~込む (into / deeply)topic-subject splitぽっくり (sudden death)