What was the name of the older brother of the king who reigned when Roger Hillary married ? 
Roger Hillary:  In the later years of Edward II's reign Hillary kept a low profile. Roger Hillary:  In spring 1320 he married Katherine, and added to his property portfolio the Manor of Fisherwick near Lichfield in 1327 and a life-grant of a mill at Bentley at around the same time. Edward II of England:  The fourth son of Edward I, Edward became the heir to the throne following the death of his older brother Alphonso.
Alphonso