I have been reading many genealogy related books lately....and i recall coming across the name Tissera a few times. It probably is not the person you are looking for. I can't even remember where i saw it........one of them might be'Twentieth Century Impressions of Ceylon'. which is on Google books. If you go to Google books, type the name of this book. Once you come to that book, there is a search area where you can type a name...and it will look it up.
There are many books scanned onto Google books. You might want to research in thos books. Just a thought.