Where does “seo” come from?

seo (Irish) comes from English show, from Middle English schewen, from Old English scēawian, from Proto-Germanic skawwōną, from Proto-Indo-European (s)kewh₁- — to perceive; to observe.

seo (Irish): this; here

Definitions

this; here

Ancestry of “seo”, step by step

seo traces back through two separate lines of ancestry.

via English show

Step	Language	Word	Meaning
1	English	show	To display, to have somebody see; To bestow; to...
2	Middle English	schewen	to show
3	Old English	scēawian	to look, look at, exhibit, display; to look at,...
4	Proto-Germanic	skawwōną	to look, see, watch
5	Proto-Indo-European	(s)kewh₁-	to perceive; to observe

via Old Irish so

Step	Language	Word	Meaning
1	Old Irish	so	this
2	Proto-Celtic	so	this
3	Proto-Indo-European	só	this; that

Every word from Proto-Indo-European (s)kewh₁- →Every word from Proto-Germanic skawwōną →Every word from Old English scēawian →