That was a great explanation for the name of Mr.Anand natarajan.So as a reward I will try to explain your name.
siva-lord shiva patha-feet sekaran-wearing in head.
so siva patha sekaran means 'one who wears the head of lord shiva in his head'.Lord shiva too has names ending with sekaran like "chandra sekaran" meaning "one who wears moon in his head".Some other gods too share the credit of having moon on their head.Lord Ganesh has the name "pala chandran" (Not bala chandran)Obviosuly he must have taken the moon from his father.Pollatha pillayarappan.
Sridhar means the "husband of lakshmi" sri-lakhsmi, dharan- husband.It denotes lord mahavishnu himself.Rathnam we know what it is.Maybe sridhar rathnam means "Rathnam that decorates the husband of mahalakshmi" or might denote rathnam like mahavishnu himself. (mahavishnu and rathnam are blue in color)
My name sampath kumar denotes lord sampath kumaran in melkottai mysore.It means "rich kid" in english,but such transliteration kills the beauty of the name.Sage Ramanuja visited melkottai and lost his heart to the sampath kumaran idol there.He called that idol in tamil with affection as "selva pillai".
Of the other people I know here "Narendran" means "king/god of men" Naran=humans,men indiran=god/king.Whenever I hear the name narendran I remember naren-vyjayanthi of suba.
satish kumar arunachalam is a nice name with deep philosophical meaning.
satyam+eesan=satyesan=sateesh (lord of truth) kumaran =young arunachalam =arunai+asalam (aruna=river arunai or a red male horse. There is even a vedic god called arunan.)
asalam=mountain
so this name means "shiva,the god of truth".
But the name ananda natarajan is fantastic.It denotes so many things.Nata rajan means king of dance.Actually natarajan is also called as "saba pathi" "saba nayagan"(not our K.Kalimuthu) since he is the pathi of the dance hall(saba)When the king of dance,dances what a fantastic sight it might be?Also shiva always wears sudukattu sambal and bones.But when he dances , he dances with dress like a king.That is also the time of creation.Ooli nadanam signals destruction.Ananda nadanam denotes creation.Shiva will be very happy then and will not refuse any boon we ask at that time.
Lucky guy you are Mr.Ananda nataraj to have such a name.Dont cut it short as anand or nataraj.Full name "Ananda nada Rajan"--wow sounds great.