Combination of the prefix Ty- and the name Shana
Tyshana is a modern American invention, likely created by blending the popular 'Ty-' prefix with Shana, which itself is often a derivative of the Hebrew name Shannon or Jane. It follows a mid-to-late 20th-century trend of rhythmic, multi-syllabic name creation within African American communities. Because it is a contemporary coinage, its meaning is derived from its component parts rather than a single ancient root.
Less common today
Tyshana isn't in the latest US Top 1000. It last peaked at #7,209 in 1997.
US births per 5-year period, 1990βpresent (SSA data).