Where does “ثاودسيوس” come from?

ثاودسيوس (Arabic) comes from Ancient Greek Θεοδόσιος, from Ancient Greek δόσις, from Ancient Greek δίδωμι, from Proto-Indo-European dédeh₃ti, from Proto-Indo-European deh₃- — to give.

Ancestry of “ثاودسيوس”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	Θεοδόσιος	—
2	Ancient Greek	δόσις	giving, a gift; license, permission; portion
3	Ancient Greek	δίδωμι	I give, present, offer; I grant, allow, permit;...
4	Proto-Indo-European	dédeh₃ti	to be giving
5	Proto-Indo-European	deh₃-	to give

Every word from Proto-Indo-European deh₃- →Every word from Proto-Indo-European dédeh₃ti →Every word from Ancient Greek δίδωμι →