Where does “’u” come from?

’u (Welsh) comes from Welsh eu, from Middle Welsh y, from Old Welsh ir, from Proto-Celtic sindos, from Proto-Indo-European sḗm, from Proto-Indo-European sem- — together, one.

’u (Welsh): their used after vowels

Definitions

their used after vowels

Ancestry of “’u”, step by step

Step	Language	Word	Meaning
1	Welsh	eu	their; them
2	Middle Welsh	y	his, its with reference to a masculine noun; triggers soft mutation of following consonant
3	Old Welsh	ir	the
4	Proto-Celtic	sindos	this
5	Proto-Indo-European	sḗm	one
6	Proto-Indo-European	sem-	together, one

Every word from Proto-Indo-European sem- →