In 1696 Houghton listed three Bristol Glass Houses making Flint and Ordinary glass. The three most likely glass houses to meet this descriptiona were at Redcliffe Backs,Red Lane and Bedminster. This page contains some notes on issues that are not fully resolved.
There is a mention in Fawley parish records of a glassblower Orchard from Laffards Gate, Bristol who took an apprentice in 1706. This probably refers to Lawford's Gate in the north-east of the city which was demolished in 1769. Orchard was a fairly common name and there are some IGI records for an Orchard family in Bristol in the late 17thC, including a John who married in Bristol in 1661. There is no know glass house site close to Lawford's Gate, but it would not be a surprising location because glass houses tended to be established just outside city boundaries in the 17th Century and this area was one of the first Bristol suburbs to be developed. In the 1696 list of inhabitents of Bristol there is a Nicholas Orchard and a William Orchard senior, but neither of these were living close to Lawford's gate.
A number of references mention that one of the Dagnia family of glass makers was working in Bristol in 1651. The original quote from which this comes is given by D.R. Guttery in his book From Broad Glass to Cut Crystal, and this refers to an Edward Dagnia glass maker then living in Bristow. It has been assumed that Bristow meant Bristol, but an alternative interpretation that would be more consistent with the quote is that it meant Bridstow close to Newent and Gloucester, in an area which had been a centre for glass making (particularly bottles) since the 16th century. There is no other record that I can find of the Dagnia family in Bristol, but there is a record of Edward having his son John christened in Gloucester in 1672 and three of his sons had moved to Newcastle on Tyne by 1684 to make glass there.