polrannypirates.blogspot.com seems a great website
No photos to offer, but have you seen the 1857 taxable Bockagh occupiers (some might be duplicated) listed in Griffiths valuation include the following names with their property boundaries marked on accompanying maps.. later the townland switched to co roscommon as you know see more below
http://www.askaboutireland.ie/griffith-valuation/index.xml? Bowens Patrick Mayo Kilcolman (Part Of)
Caulfield Michael Mayo Kilcolman (Part Of)
Cuggeran Michael Mayo Kilcolman (Part Of)
Duffy James Mayo Kilcolman (Part Of)
Duffy James Mayo Kilcolman (Part Of)
Duffy Joseph Mayo Kilcolman (Part Of)
Duffy Joseph Mayo Kilcolman (Part Of)
Duffy Michael Mayo Kilcolman (Part Of)
Duffy Michael Mayo Kilcolman (Part Of)
Flannery Peter Mayo Kilcolman (Part Of)
Kilgarriff Patrick Mayo Kilcolman (Part Of)
Mcdonagh Patrick Mayo Kilcolman (Part Of)
Mcdonagh Patrick Mayo Kilcolman (Part Of)
Molloy Michael Mayo Kilcolman (Part Of)
Mulligan Michael Mayo Kilcolman (Part Of)
Roe Bridget Morris Mayo Kilcolman (Part Of)
Roe Bridget Morris Mayo Kilcolman (Part Of)
Roe Bridget Morris Mayo Kilcolman (Part Of)
Roe James Morris Mayo Kilcolman (Part Of)
Roe Jas. Morris Mayo Kilcolman (Part Of)
Roe Jas. Morris Mayo Kilcolman (Part Of)
Roe Michael Morris Mayo Kilcolman (Part Of)
Roe Myles Morris Mayo Kilcolman (Part Of)
Roe Patrick Morris Mayo Kilcolman (Part Of)
Roe Peter Morris Mayo Kilcolman (Part Of)
Towey Michael Mayo Kilcolman (Part Of)
Towey Michael Mayo Kilcolman (Part Of)
When the Griffith's Valuation was conducted in Kilcolman Civil Parish, Costello Barony in 1856, it was still part of County Mayo. This was one of the border areas that was later transferred to County Roscommon in 1898 under a "Local Government Act." All 28 Townlands in Kilcolman Civil Parish, Costello Barony became part of County Roscommon in this transfer. See
http://www.rootsweb.ancestry.com/~irlmayo2/kilcolman_cp_costello_gahagans_griffiths.html Transfers of the following 28 townlands in Kilcolman Civil Parish in the Barony of Costello from Co Mayo to Co Roscommon took place in 1898
See
http://www.leitrim-roscommon.com/transferred_towns.htmlI did find the images on Google for Bockagh
Ididnt look up Tonregee, good luck in your quest, Jim