There's a related group (distantly) on Worldfamilies. The Treece group contains some members that share a branch with Harps, if we go back to FGC51008. Where the FGC51005 clade branches off, the members in the Treece project are Z4303. That was a while ago, but we're cousins, nonetheless.
Not all of the members of the Treece group are in this clade. I'm one, though.
Just a shout out.