JOHN BULL'S MYSTERIOUS PUZZLE

How to make another "Bobs" (Lord Roberts) appear.

Based on the well known Hooper's Paradox from a square showing 64 portraits the puzzle is to make a rectangle showing 65 portraits.

"Bobs" full name and title was a bit overwhelming: -
Field Marshal Frederick Sleigh Roberts, 1st Earl Roberts, Bt, VC, KG, KP, GCB, OM, GCSI, GCIE, KStJ, PC

He was a national hero and one of the best British commanders of the 19th Century.