vatter (OSw) váttr (ON) noun

In ON, various types of witnesses, such as eyewitnesses (ONorw FrL, GuL), compurgators at denials (ONorw FrL) and those giving testimony concerning legal proceedings at the þing ‘assembly’ (ONorw Eids, FrL, GuL). In OSw, a witness in a tylft (oath of twelve) and only appearing in an oath formula.

man of oath OSw YVgL Tb
witness OIce Grg passim
OIce Jó Þfb 4, 8 Mah 2, 24
OIce Js Þfb 6 Kvg 1 Lbb 1 Kab 2
OIce KRA 3, 11
ONorw BorgL 14.5
ONorw EidsL 7
ONorw FrL Intr 15, 16 Tfb 2 KrbA 16, 22 KrbB 5 Mhb 8
ONorw MLL passim
OSw ÄVgL Kkb, Md, Smb, Vs, Gb, Rlb, Jb, Tb
OSw YVgL Kkb, Add
witness (i.e. person giving testimony) ONorw GuL Arb, Kpb, Llb, Mhb, Tjb, Krb, Løb, Olb, Tfb, Kvr, Leb Refs:

Cleasby and Vigfusson s.v. váttr; Fritzner s.v. váttr; Hertzberg s.v. váttr; Schlyter s.v. vatter