I'm convinced that this must be the family name of the famous composer, written as it would be written in Spanish, as
Daividh already remarked, used as a given name in the Philippines.
The word does'nt sound at all like a word in Tagalog or Cebuano (that sounds like said family name just by coincidence.) A Chinese word/name similar just by chance seems even more improbable.
If you look at the long list of names of people from the Philippines at
http://www.manilatimes.net/others/results/sec1004.txtthat also features a Bethoven you see that there are quite a number of other entries that would probably surprise people in other countries somewhat as well: given names like
Cinderella, Jamaica,
Maria Theresa, Divino,
Napoleon, Nueva
Era, Gandhi, Arcangel, etc.
There is room for a Bethoven for sure.
So what does the family name van Beethoven mean? It seems to have Dutch roots:
http://www.lvbeethoven.com/Bio/BiographyFamily.html"Beeth means 'beetroot' and Hoven is the plural of 'Hof', meaning 'farm'. Beethoven is therefore 'beetroot farms'."
Rene www.AboutNames.ch