Becca: from OE Beocca, possibly identified with Bikki from Snorra Edda and Völsungasaga, Ermanric's treacherous retainer, and Bicco in Saxo's Gesta Danorum but Malone dismisses this as linguistically improbable (pg 131).
Baningas: Malone has a long note here connecting Baningum with Bainaib (Cuntz 1923) and Ptolemy's Βαινοχαιμαι, whom he argues are separate from the Bohemians (Boihœmum, Marquart)
Burgendan: a Germanic tribe dwelling in the Rhine region and later the Rhone. Wikipedia
Gifica: Also the Gibica mentioned in King Gundobad's Leges Burgudionum (see Malone 154), believed by F. Bluhme to be the father of Gundomar, Gislahari (Gislhere, line 123) and Gundahari(Guðhere, line 66). Malone speculates that these may represent each a generation.