Tommen

Tommen is a diminutive of the Aramaic name Thomas, meaning 'twin'. While Thomas has a long and well-documented history, Tommen is a less common variant. It likely emerged as a familiar or pet form of Thomas, particularly in regions where the full name was popular. Its usage has been sporadic and often localized, rather than widespread.

The name gained a significant, albeit fictional, boost in recognition through its prominent use in George R.R. Martin's 'A Song of Ice and Fire' series and its television adaptation, 'Game of Thrones'. This fictional association has given the name a more distinct identity separate from its root, Thomas, for many contemporary audiences.