Etymology
From Middle English gadelyng (“companion in arms; man, fellow; a person of low birth; rascal, scoundrel; bastard; base, lowborn”), gadeling (“vagabond”), from Old English geaduling, gædeling (“kinsman, fellow, companion in arms, comrade”), from Proto-West Germanic *gaduling, from Proto-Germanic *gadulingaz, *gadilingaz (“relative, kinsman”), equivalent to gad + -ling. Related to Old English ġegada (“comrade, companion”).