Hi Deborah
According to the IGI,Robert and Mary Jonas had the following children all born in North Huish,it looks as if the first Sarah may have died at a young age as they also named there last daughter Sarah.Hope this helps.
Henry
Born 1814
North Huish
Thomas
Born 1815
North Huish
Sarah
Chr 30 May 1819
North Huish
William
Chr 13 Jan 1822
North Huish
Sophie
Chr 15 Feb 1824
North Huish
Ann
chr 16 July 1826
North Huish
Sarah
Born 1827
North Huish