Well met... I've not had much luck locating the individuals of the leading Selgaunt families? Is this information available any where
I've read almost off the Sembian novels now, and besides the Uskevren, there doesn't seem to be too much info. I suppose family heads would be the most important
Since there's very little information contained in the official FR canon, I would suggest that you repost this question over in the Questions for Ed Greenwood scroll, in the Novel section.
You're sure to have better luck finding an answer there, and what better way than from the mouth of Ed himself (translated through the Lady Hooded One of course... )