Other Morphett families figure prominently in the early history of the towns Clarendon, Truro and Quorn, but their relationship to the two politicians is yet to be established.
Jeremiah Morphett and Ann they emigrated to South Australia aboard Trusty, arrived 15 May 1838. She died at Angle Vale, South Australia; Jeremiah died at "Hornbrook", Woodchurch, Kent. Their children included Jeremiah and Richard, who were pioneers of Clarendon, and known as its founders in 1846. They have been identified as cousins of John and George Morphett.
*Jeremiah Morphett emigrated to Australia on the Trusty with his wife Mary, arriving 15 May 1838. Died in Richmond, Victoria.
*Richard Morphett arrived in South Australia on the Taglioni on 13 October 1842; he married Lucy Du Rieu on 9 August 1843; arrived Clarendon 1845; lived at "Blackwood Lodge", Clarendon Farm. 1852; involved in Baptist church 1861, had vineyard 1864, wines 1866. The first meeting of Clarendon town council was held in his home. Their large family included Albert Louis Morphett, who wrote a gardening column for the Chronicle and George Arthur Morphett, who taught at Clarendon, Glenburnie, Mallala and Blackwood.
*Frederick Morphett married Susannah Hardy on 18 April 1856 lived at Laura, then Quorn, then in 1885 left for Port Adelaide. Two sons, Frederick William Morphett and Albert Ernest Morphett worked at John Dunn's flour mills at Quorn, then Port Adelaide.
John and Elizabeth Morphett of Wittersham, near Tenterden, Kent, emigrated to South Australia on the on Isabella Watson, arrived 14 May 1846 and settled in the Clarendon area. They may have been related to the other Morphetts, as they originated from the region. Two sons were prominent in the Clarendon area: George Morphett, who died at Kooringa, and Robert Morphett.
Joseph Morphett and his wife emigrated on the China, arriving in South Australia 14 December 1847. He married Mary Ann Williams at Blakiston on 1 April 1850, settled at "Truro Vene" in Truro. Some time before 1900 they moved to Morgan. His son Joseph Morphett jnr. married Mary Smith on 20 April 1888, lived at Morgan.
