Where does “Sön” come from?

Sön (North Frisian) comes from Old Frisian sand, from Norwegian Nynorsk samd, from Proto-Germanic samdaz, from Proto-Indo-European sámh₂dʰos, from Proto-Indo-European sem- — together, one.

Sön (North Frisian): sand

Definitions

sand

Ancestry of “Sön”, step by step

Sön traces back through two separate lines of ancestry.

via Old Frisian sand

Step	Language	Word	Meaning
1	Old Frisian	sand	—
2	Norwegian Nynorsk	samd	in agreement
3	Proto-Germanic	samdaz	sand
4	Proto-Indo-European	sámh₂dʰos	sand
5	Proto-Indo-European	sem-	together, one

via Proto-Germanic sunuz

Step	Language	Word	Meaning
1	Proto-Germanic	sunuz	son
2	Proto-Indo-European	*suhnús	—

Every word from Proto-Indo-European sem- →Every word from Proto-Indo-European sámh₂dʰos →Every word from Proto-Germanic samdaz →