Various newspaper references in no particular order. Sorry this is a bit of an info dump!
Greenock Telegraph and Clyde Shipping Gazette, February 1866
Unclaimed letters in Post-Office
...
5 Andrew Turner, carpenter, Burn's Land, Port Glasgow Road
...
Greenock Advertiser, June 1873
CASE OF FIRE RAISING. – As a constable was examining the doors in Burn's Land, Devol's Glen, Port-Glasgow, early on Thursday morning, he discovered fire coming from the house occupied by Robert Rodger, grocer. He alarmed the tenants, and got the fire put out before much damage was done. The Superintendent after-wards made an examination of the premises, and found that it had been a case of fire-raising, a quantity of shavings and two matches being found underneath the woodwork.
Greenock Telegraph and Clyde Shipping Gazette, May 1878
DEVOL'S GLEN. The attractions of Devol's Glen for a ramble are well known and duly appreciated by inhabitants of Port-Glasgow, especially residenters in the West-End. With the view of making the ground more accessible, some of the latter have during leisure hours had a footpath formed along the west side of the burn which runs down the Glen. This footpath passes underneath the arches of the Glasgow and South-Western Viaduct; then a small rustic bridge has been laid across the water, where, a short distance along, a seat has been erected at the termination of the "walk." It need hardly be said that the amenities of the locality have been very decidedly improved in this way.
Greenock Telegraph and Clyde Shipping Gazette, June 1866
DEATHS
Here, at Burn's Place, Devol's Glen, Port-Glasgow Road, on the 14th inst., Mary Jane , aged one year, daughter of Henry Smith, hecklemaker.
Possibly relevant?
Greenock Telegraph and Clyde Shipping Gazette, November 1869
PORT GLASGOW
KENNEDY WATSON
Begs to the inhabitants of Port-Glasgow that he has leased the premises
16 DEVOL's GLEN
long occupied by Mr Matthew Burns, and intends carrying on the BOTTLING TRADE, and will supply Families and the Trade at Cost Prices.
Other items indicate that 16 Devol's Glen was known as the Crown Inn.
On the 1858 large scale OS map of the area, the burn is indeed named Devol Burn and the area immediately to the west of the road bridge over the burn is labelled "Glen". (And the burn is still Devol Burn on modern maps.) There is a PH labelled nearby (The Crown?) and there are Flax Drying Grounds and a canvas manufacturer labelled. Henry Smith referred to above was a hecklemaker; a heckle was a wooden comb used in flax-dressing.
link to map:
http://tinyurl.com/4ut5dzyy
