Grand Superintendent writes to all Lincolnshire’s Chapter Freemasons

What's the collective noun for Provincial Grand Masters? Perhaps a 'Happiness', or as in this picture. a 'Handful'? This picture was taken before the Provincial Grand Lodge of Lincolnshire, and shows, from left, RWBros Bill Dastur, Cambridgeshire; Steven Varley, Derbyshire; Tony Henderson, Bedfordshire and Philip Marshal, Nottinghamshire.