The Scandinavian Influence on Old  English ( 450-1150 )

bear Scandinavian names.
About 300 names contain the Scandinavian word thorp.
 In

some districts in the counties of Yorkshire and Lincolnshire about 75 percent of the place-names are of Scandinavian origin.

Scandinavian words that appeared in Old English was small, amounting

to only twenty words. The largest group was associated with sea-roving, as in barda (beaked ship), cnearr (small warship), ; (vessel; (fleet), ;mann (pirate), dreng (warrior), bātswegen (boatman), hofding (chief), orrest (battle), rān (robbery, and fylcian (to collect a force).
A little later, a number of words relating to the law or the social and administrative system entered into English. Examples include the word law itself, as well as outlaw, wapentake (an administrative district), hūsting (assembly), which all come from the Danish language.

bull, calf (of leg), egg, fellow, gait, gap, guess, kid,

leg, link, loan, race, root, scales, score, seat, sister, skin, skirt, sky, steak, tidings, trust, want, and window, among many others.
Among adjectives we find awkward, flat, ill, loose, low, meek, odd, rotten, scant, seemly, sly, tight, and weak.

their, and them are Scandinavian, replacing the Old English pronouns

hīe, hiera, and hīe.
The words both and same, which have pronominal uses, are of Scandinavian origin, too.
The prepositions till and fro (from) are Scandinavian; the latter survives in the phrase to and fro.

influence not only affected the vocabulary but also extended to

morphology and syntax.
Among these inflections are the –s of the third person singular, present indicative of verbs, and the participial ending -and (bindand), which is now replaced by –ing. The words scant, want, and athwart retain in the final t the neuter adjective ending of Old Norse.