The PbP game I'm running over on GamersPlane has the party entering town and interacting with the family-run Sheltered Tree Inn, thus far they've met the half-orc father (a retired merc/adventurer with more scars than unblemished skin) and one of his sons (the barkeep) and heard mention of an elf uncle, a sister, and an older brother. The father (an old PC of mine named Kol) has demonstrated an intimidating demeanor that can be dropped on a moment and a boisterous sense of humor. The barkeep (Kael) has shown a serious personality with some level of snark and no hesitation in pushing his brother's buttons.
There's been indirect interactions with the older brother, as he had asked Kael to give a letter to one of the PCs prompting the following:
As he placed bowls of porridge in front of the group, the barkeep looks to Anise and with a resigned expression on his face, "As the younger brother, I have been volun-told to give this to you," he says as he hands over a folded piece of parchment.
Calmly walking over to the window that leads towards the main kitchen, he leans over and yells, "YA HAPPY? I GAVE HER YOUR STUPID LETTER!"
There's a brief clang of metal as what sounds like an empty pot hits the floor followed by a return bellow, "CROLAZAR DAMN IT, KAEL, DO YOU HAVE TO YELL IT FOR ALL THE TOWN TO HEAR?!"
So how do you guys roleplay various families in your games?
I haven't played enough families to give much of first hand experience, but I love what you have done here with this one. I think it is the right model to go with finding the stand out traits of each and how that would then interact with the others.
I know that I have played some groups as very tight knit, and ones coming to the aid of others inside of the group as well.