Patronymically from Gershown; a Gereshonite or descendant of Gereshon -- Gershonite, sons of Gershon.
see HEBREW Gershown
H1649. Gereshunni
גֵּרְשֻׁנִּי adjective, of a people with article as substantive collective Numbers 3:21, 23, 24; 4:24, 27, 28; 26:57; Joshua 21:33; 1 Chronicles 23:7; 26:21; 2 Chronicles 29:12; with article as adjective singular masculine 1 Chronicles 26:21; 29:8.