I have your Titmus - Docwra marriage in my database of Docwra family members, as follows:
Abel Titmous / Titmouse / Titmus (b. July 12, 1752, Guilden Morden, Cambs) married Sarah Docwra on 15 Oct 1777 at Guilden Morden, Cambs, UK. They had the following children:
WILLIAM baptised 18 Jan 1778, Guilden Morden, married 1 Dec 1804 Jane Haggar.
ELIZABETH baptised 30 Apr 1780, Guilden Morden, married. 20 May 1802 John East.
JOHN baptised 1 Dec 1782, Guilden Morden.
In my correspondence file I have had contact from two people (one in the UK and one in Australia) connected with and researching this line. If you would like to contact me with any questions about them I may be able to find more for you.
Cheers! Anne
Docwra Family Research Project
www.docwras.org.uk