After much searching I have now located Thomas Crump's first wife.
Thomas Crump died on the 13 Apr 1874 in Hawthorn, Victoria, Australia. On his death certificate it was stated that he was born in ?Kent, England? and had been living for ?32 year in Victoria? .
Based on time lived in Victoria he would have arrived around 1841/2. His death certificate also stated that he had been married twice although the name of his first wife was not listed, as particulars were not known at the time.

The only Thomas Crump arriving in Australia in 1841/2 was on the Marquis of Hasting on 4 February 1841, listed as being married and was accompanied by his wife Rebecca Crump. On Rebecca?s record it was listed that she was formerly known as Underhill presumably her maiden name as her father?s surname is also given as an Underhill.

According to the Maidstone church records there was a marriage between a Thomas Crump and a Rebecca Underhill on the 15 Nov 1834 .

Seven years later that couple were migrating to Australia, seven years after arriving Rebecca died on 28 Aug 1848 in Melbourne, Victoria, Australia. There appears to have been no English or Australian born children to the couple, according to Rebecca's migration papers her state of bodily health was ?rather delicate?. Both were Wesleyan Methodists.

Two years later Thomas married Selina Wheeler on 30 Dec 1850 in the Weslyan Church, Melbourne, Victoria, Australia.