The name Titcomb is Anglo-Saxon in origin a variant of the village name of Tidcombe in Wiltshire England. The Domesday Book refers to 'Titicome'.
Among the early recordings of the name in Wiltshire is the marriage of Elizabeth Titcumb and William Putman on April 26th 1611 in Salisbury, and the christening of Betty Titcumb on January 27th 1750 at Chippenham.
A Coat of Arms granted to the family in 1693 in the county of Wiltshire has the blazon of a gold shield thereon a blue bend between two foxes' heads erased gules. The crest being an arm and hand couped grasping a broken lance gules. The first recorded spelling of the family name is shown to be that of Agnes Titcomb, which was dated February 2nd 1548, at St Andrew's, Ogbourne, Wiltshire, during the reign of King Edward V1, known as 'The Boy King', 1547 - 1553.
From the internet surname database