what was the attendance of this aforementioned parliament?
26 of the 46 barons.
Parliament of 1327
. Only 26 of the 46 barons who had been summoned in October 1326 for the December parliament were then also summoned to that of January 1327, 
what is parliament of 1327? It the Parliament of England that sat between 7 January and 9 March 1327. when did the constitutional crisis happened in this parliament? 1326. what was this crisis all about? The crown being transferred between two living kings. where did this crisis take place? Westminster, England.
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Parliament of 1327 [SEP] Attendance
No parliament had sat since November 1325. Only 26 of the 46 barons who had been summoned in October 1326 for the December parliament were then also summoned to that of January 1327, and six of those had never received summonses under Edward II at all. Officially, the instigators of the parliament were the Bishops of Hereford and Winchester, Roger Mortimer and Thomas Wake; Isabella almost certainly played a background role. They summoned, as Lords Spiritual, the Archbishop of Canterbury and fifteen English and four Welsh bishops as well as nineteen abbots. The Lords Temporal were represented by the Earls of Norfolk, Kent, Lancaster, Surrey, Oxford, Atholl and Hereford.