I think missing out on the consumerism is just fine when you think about the first time you meet someone and you tell them your name, and the reaction they have. My mum picked Tynan the same way that your parents did.to think i was gonna be called todd... I have read a few different definations for our name: dark or grey castle, dark warrior and what you said.
I was living with a couple guys that were in Canada doing a working vacation from Ireland, and they told me that it's pronounced tiernan in gaelic. They also mentioned that he was a mythical warrior or something of the sort. I was actually trying to find out more info about this after a girl on the bus started up a convo and took a fancy to my name, and that is how i stumbled across this site.
Tynan