No, not Poorfarm Brook; Gunstock River which runs from Mt Belknap thru Gilford and enters Winni in Saunder's Bay. I'm sure some LL salmon also run up Poorfarm but I never caught any small LL slamon in Poorfarm. Small LL salmon are often confused for brown trout.
Brown trout parr / fry look very similar to atlantic salmon parr...they are the same genus. Salmon will have a forked tail, browns a squared off tail. Those black markings are definitely the way to distinuish both from brookies. I've cleaned 16" salmon that still had faint black bars..