speakers through trade with, and immigration from, the low countries. From Scandinavian (often via Scandinavian influenced Middle English) came at (that/who), byg (build), bak (bat), bla (blae), bra (brae), ferlie (marvel), flyt (remove), fra (from), gar (compel), gowk (cuckoo), harnis (brains), ithand (industrious), low (flame), lug (an appendage, ear), man (must), neve (fist), sark (shirt), spe (prophesy), þa (those), til (to), tinsell (loss), (valiant), and wyll (lost, confused). The Flemings introduced bonspell (sporting contest), bowcht (sheep pen), cavie (hen coop), crame (a booth), (flint striker), (a gross), howff (courtyard), kesart (cheese vat), lunt (match), much (a cap), muchkin (a liquid measure), skaff (scrounge), wapinschaw (muster of militia), wyssill (change of money), and the coins , and . A number of Gaelic words such as breive (judge), cane (a tribute), couthal (court of justice), davach (a measure of land), duniwassal (nobleman), kenkynolle (head of the kindred), mare (tax collector), and toschachdor (leader, cf. Irish , Welsh ) occurred in early legal documents but most became obsolete early in the period. Gaelic words for topographical features have endured, such as bogg (bog), carn (pile of stones), corrie (hollow in a hill), crag (rock), inch (small island), knok (hill), loch (lake or fjord), and strath (river valley). Orthography The language first appeared in written form in the mid-14th century, when its written form differed little from that of northern English dialects, and so Scots shared many Northumbrian borrowings from Old Norse and Anglo-Norman French. The reduced set of verb agreement endings in particular give the language an uncannily modern appearance when compared to the writing of English contemporaries such as Geoffrey Chaucer. Some orthographic features distinguishing Northern Middle English and Early Scots from other regional variants of written Middle English are: The notable use of the Northern subject rule, which according to one hypothesis, is thought to have arisen through contact with the Celtic languages of Britain during the early medieval period. Another hypothesis proposes a possible path of developments from the reduction of verbal affixes followed by originally enclitic postverbal pronouns. The forms of the third person plural pronoun they/their/them (derived from Old Norse) which later moved southwards to replace the older Southern he/here/hem forms (derived from Old English). One reason why the Northern forms were ultimately successful is that they got rid of the ambiguity of early Southern Middle English he (which could mean 'he', 'they', or even in some dialects