I figured I'd knock something off the quickie list.
I wanted to cover this when talking about characters' parents, but the short version of it is, literally over half the cast is orphans. The few who aren't, have both parents alive, with one exception. Ace's mother died reasonably recently in his life (without her, he had no ties to his home and thus her death spurned his adventuring life)...but his father is very much still alive.
Unlike most parents still living in the story, we actually get to meet him and learn a fair bit about him. His name is Jake Samson, AKA, "The Four-Armed Swordsman". This is a moniker he earned via using two two-handed weapons...one per hand. He doesn't literally have four arms, but the implication of the statement is, his skill and mastery of using two two-handed weapons at once is such that it seems like he'd need four arms to accomplish the feat.
His weapons of choice are a longsword (maybe even claymore) in his right hand, supported by a nodachi in his left hand. He's considered the best swordsman of the old continent, one of the top ten adventurers in the old continent, and one of the top ten swordsmen in the whole world.
In this sense, he is a bit of a rockstar, and suffice to say, Phyrra is in particular flabbergasted to learn that Ace's father is someone so famous. It should be noted though that due to how the world of Phyrra and Cyrus is, he's only a mild celebrity. He has some world-wide renown, but only in his area is he considered particularly strong. So he IS famous, but only slightly so.