I did search for Iris 'Roy Elliott', but found little information. It appears on a few lists of species and cultivars without a description, although one list (but not the RHS Plantfinder) identifies it as a selection of I. versicolor. There is a photo of it on the Arrowhead Alpines photo gallery. The plant Terry Laskiewicz grew from its seed appears to be a much improved version, at least florally, because the cultivar 'Roy Elliott' has narrow standards while Terry's flower, similar in color, has broader, spectacularly marked and ruffled segments. I've grown I. versicolor, the typical plant, but did not consider it worth keeping. Probably the free-draining soil here didn't suit it, either. Jane McGary