I'm trying to compile a list of youth teams that have played in Tyrone underage competitions over the years, which are a combination of two or more adult clubs or in a few cases, a club in its own right with no adult team. The latter were deemed 'independent' clubs by the county board and did exist up until some point in the 90's. Feel free to add on any already not mentioned...
Current
Naomh Mhuire - Edendork, Killyman
Naomh Padraig - Brocagh, Derrytresk
Gael Naomh Padraig - Augher, Clogher
Past
Michael Cusacks - Drumquin, Dregish (mid 2000's)
Owenkillew - Greencastle, Gortin (up until late 80's or early 90's)
Donagheady - Aughabrack, Dunnamanagh (for at least several years in the 90's until Clann na nGael was formed)
Cappagh - Killyclogher, Mountfield (Even though Mountfield folded many years ago, Killyclogher still maintain the name)
Emmetts - Fintona, Trillick (various teams in the 70's and 80's)
Shamrocks - Aghaloo, Killeeshil, Eglish (won U21 championship in the 70's - name occasionally used by a combined team from only two of the clubs)
Fr. Geaten's - Coalisland, Stewartstown, Brackaville (60's & 70's)
St. Alban's - Brackaville, Stewartstown (70's & 80's)
Independents
Glebe - based in Glebe village near Strabane. Was active at least in the late 80's.
Mourne - Strabane based team, active in early 90's.
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I know at one point that there was a Clonoe Parish team made up from all four clubs there, but I can't remember if it had a specific name.