Where does “שומרון” come from?

שומרון (Hebrew) comes from Hebrew שׁוֹמֵר, from Hebrew שָׁמַר — to guard.

Ancestry of “שומרון”, step by step

Step	Language	Word	Meaning
1	Hebrew	שׁוֹמֵר	guard
2	Hebrew	שָׁמַר	to guard