Billye

Billye is a girl's and boy's baby name of Germanic origin, a feminine spelling variant of Billy, itself a diminutive of William, from the Old High German Willahelm, combining willa (will, desire) and helm (helmet, protection), meaning 'resolute protector.'

Billye was used primarily in mid-20th century America, especially in the American South, as a feminine form of Billy. The -ye ending distinguished it from the more masculine Billy, giving women a way to claim the nickname as their own.