i'm not sure what 'templates' you are wanting- i've made many lonestars- but never with templates.
my favorite lonestar pattern to use is the pre-printed fusable interfacing from QuiltSmart. it makes them go together very quickly and precisely- and available in a number of sizes.
the Elenor Burns lonestar is another good one- that one is strip pieced-
there are a number of patterns available- but i don't know about 'templates'
perhaps PaperPieces.com has a template based pattern- if so they would also have all of the needed templates- they are where i get alot of my flowergarden & tumbling block templates- i know they have alot to choose from.