Complex sentence: Mr. Rothfuss has two sons whose names he does not use on the internet for their safety (on his blog he calls them "Oot" and "Cutie Snoo") and lives in a house he bought with his girlfriend, Sarah.
Split into simpler sentences: Mr. Rothfuss has two sons whose names he does not use on the internet for their safety. On his blog he calls them "Oot" and "Cutie Snoo" and lives in a house he bought with his girlfriend, Sarah.