Never put your real name on your system; that only makes another potential 'leak' of information in the event your firewall is breached somehow.
Security thru obscurity at every step these days, so change that 'computer name'.
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Provided you have a functional firewall, knowing an iP only discloses the location of your providers server that 'dumps' your traffic onto the 'Net.
It should be noted that the browser itself will automatically send tid-bits of info about the system, and as such is one avenue of info leakage.
With enough tid-bits, a specific person can be determined, but by far the most leveraged information is what you have disclosed thru social media sites...for instance, " I'm in the Philippines" as you've posted here.
Never underestimate the ways and means of someone with the intent of doing ill-will to others.
Technical know-how is readily available these days to anyone who seeks it.