There are two grape varieties with this name (Reliance), both bred in the USA:
The white grape variety is an interspecific new breeding between Ontario x Suffolk Red. Synonyms are Arkansas 1163 and Reliance Seedless. It contains genes from Vitis labrusca and Vitis vinifera. The hybrid was crossed in Arkansas in 1964, and approval was granted in 1983. The seedless variety is well suited for cooler regions. It is used as a winepress and table grape. The reddish berries have a foxtone. The variety is grown on 3.5 hectares in the US states of Arkansas, Iowa, Kentucky, Minnesota and Wisconsin. In Canada, there is a small stand of 0.5 hectares in the province of Nova Scotia. In 2016, a total of four hectares of vines were reported (Kym Anderson statistics).
Serious sources on the internet are rare - and Wine lexicon from wein.plus is one such source. When researching for my articles, I regularly consult the wein.plus encyclopaedia. There I get reliable and detailed information.
Thomas Götz
Weinberater, Weinblogger und Journalist; Schwendi