The Yorkist fleet set sail and arrived in
Dublin on 4 May 1487. With the help of
Gerald FitzGerald, 8th Earl of Kildare, and his brother
Thomas FitzGerald of Laccagh,
Lord Chancellor of Ireland, Lincoln recruited 4,500 Irish mercenaries, mostly
kerns, lightly armoured but highly mobile infantry. With the support of the Irish nobility and clergy, Lincoln had the pretender Simnel crowned "King Edward VI" in Dublin on 24 May 1487. Although a parliament was called for the new "king", Lincoln had no intention of remaining in Dublin and instead packed up the army and Simnel and set sail for north
Lancashire. On landing on 4 June 1487, Lincoln was joined by a number of the local gentry led by Sir Thomas Broughton. In a series of forced marches, the Yorkist army, now numbering some 8,000 men, covered over 200 miles in five days. On the night of 10 June, the Yorkists were camped at Bramham moor, and the pro-Tudor forces under Clifford were camped near
Tadcaster. Lovell led 2,000 Yorkists on a night attack against Clifford's 400 men. The result was an overwhelming Yorkist victory. Lincoln then outmanoeuvred King Henry's northern army, under the command of the
Earl of Northumberland, by ordering a force under
John, Lord Scrope, to mount a diversionary attack on
Bootham Bar,
York, on 12 June. Lord Scrope then withdrew northwards, taking Northumberland's army with him. Lincoln and the main army continued southwards. Outside
Doncaster, Lincoln encountered Lancastrian cavalry under
Edward Woodville, Lord Scales. There followed three days of skirmishing through
Sherwood Forest. Lincoln forced Scales back to
Nottingham, where Scales' cavalry stayed to wait for the main royal army. However, the fighting had slowed down the Yorkist advance sufficiently to allow King Henry to receive substantial reinforcements under the command of
Lord Strange by the time he joined Scales at Nottingham on 14 June.
Rhys ap Thomas, Henry's leading supporter in Wales, also arrived with reinforcements. Henry's army now outnumbered the Yorkists. In addition, it was "far better armed and equipped" than the Yorkist army. His two principal military commanders,
Jasper Tudor and
John de Vere, 13th Earl of Oxford, were also more experienced than the Yorkist leaders. ==Battle==