If your brand is based around your personal name, then it may be awkward for the blog to grow into a multi-author site one day. Other contributors wouldn't get credit. Conversely, anything they say on the site would reflect on you personally.

If your brand name is based on a single topic, then it may be too narrow to expand or too inflexible to pivot.

When choosing a name, you'll want to consider every direction your project might conceivably take some day.