Martins Close is on the Bishops Mead estate, to the south of Salisbury.
Other roads with the word ‘Martin’ in their name are references to Saint Martin, and in particular to Saint Martin’s Church. Saint Martin’s Church is to the south east of Salisbury city centre. The associated roads are St Martins Church Street and St Martins Terrace
Many of the roads in the area are named after birds (for example Ravenscroft, Swallowmead and Owlswood).
The House Martin
The most common ‘martin’ in England is the house martin. It’s fairly distinctive – it is blue/black and white, with a forked tail. It eats insects.
It’s called a ‘house’ martin because it often makes nests of mud under the eaves of houses. ([1])
Etymology of ‘martin’
Why is the bird called a ‘martin’?
Several websites which provide etymologies don’t really say, but the Online Etymology Dictionary has a plausible derivation
Writers in 17c. said it was named for St. Martin of Tours (d. 397 C.E.), whose festival day (Martinmas) is Nov. 11, about the time the birds depart.([2])
The forked tail might be seen as suggesting Saint Martin’s cutting his cloak in two – but perhaps I’m going too far!