Where does “séquelle” come from?

séquelle (Middle French) comes from Latin sequela, from Latin sequor, from Proto-Italic sekʷōr, from Proto-Indo-European sékʷetor, from Proto-Indo-European sekʷ- — to follow; to see; to say.

Ancestry of “séquelle”, step by step

Step	Language	Word	Meaning
1	Latin	sequela	that which follows
2	Latin	sequor	I follow, come or go after
3	Proto-Italic	sekʷōr	follow, come/go after
4	Proto-Indo-European	sékʷetor	to be following
5	Proto-Indo-European	sekʷ-	to follow; to see; to say

Every word from Proto-Indo-European sekʷ- →Every word from Proto-Indo-European sékʷetor →Every word from Proto-Italic sekʷōr →