Cooper , family , of Isleworth

Lady Cooper, born Isabella Ball Franks, of a rich Jewish business family, married William Henry Cooper, clerk and baronet (as he is frequently described). She inherited a considerable amount of money from her father Moses Franks and her mother's father Aaron Franks. Her considerable property she inherited from her aunt Priscilla (see Franks family tree), both the estate at Isleworth, and several West Indies Plantations.

On the death of her only son, William Henry, without issue (1835) the estate was settled on her eldest surviving daughter, Lady Mary Anne Honywood, who in her will provided that on her death, or that of her mother, if she should survive her (which she did) the estate should be sold and the proceeds divided among her own children, By Lady Cooper's will, apart from numerous pecuniary legacies, she leaves her estate of Chilton Lodge in Berks/Wilts to Lady Honywood's son William.

The sugar plantation of Dukinfield Hall, Jamaica fell into Franks' hands in payment of a mortgage debt and by 1822 belonged to Priscilla who bequeathed it along with her other property to Isabella, one of the original third part shares having belonged to Isabella's father Moses. There is no record at all of any of the owners ever visiting the plantation. It was left by Lady Cooper's will in trust for Mrs. Dawkins and was eventually sold in 1877. Under its earlier owners it was heavily mortgaged, and soon after it passed to Lady Cooper slavery was abolished, so it is unlikely that the family ever derived any great profit from it.