The byline describes the author of an article. Use either a short biographical paragraph or just the name.
Set bylines in a italicized version of the body text, but make them a point size or two smaller. Select typefaces and point sizes for all elements before you begin the layout.
In the 1997 Freestone, we placed bylines at the top of the first column, causing them to align with the first line of text in the second column. If the bylines had been placed between the headlines and columns instead, the alignment of the body text would have been stronger.
You could also center the byline beneath the headline, or put it at the bottom of the last column of text. Look at newspapers, magazines, and newsletters to get a sense of what other designers prefer.