Brain-Teaser 23

From The Sunday Times, 27th August 1961 [link]

A man divided 8s. 4d. among his three sons so that the difference between the shares of the eldest and youngest, expressed in halfpence, was a perfect square. The total of Alan’s and Bob’s shared was an exact multiple of 5½d.; the total of Bob’s and Clive’s shares an exact multiple of 6½d.; and the total of Alan’s and Clive’s shares an exact multiple of 9½d.

What was the name of the second son, and what was his share?

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