William Brock, born 1715

Looking for any information on William Brock, born 1715 in Scotland.He served the British Navy for several years and was taken prisoner by the French.He was exchanged at Boston and settled at Fishkill, New York.There he married Elizabeth Miller.A second marriage to Mary "Polly" Ray.Any information on William Brock and where in Scotland he may have originated would be appreciated.Thank you.