Here's what is says in Journal of the Folk-Song Society, Volume 2:
[John Cluer, who afterwards became a noted music-publisher, first began in Bow Churchyard, Cheapside, with the printing of ballads, about 1700-10. He was directly followed in this line by William Dicey, about 1730; the imprint then merely gave, "Printed and sold in Bow Church Yard."]
Cluer died in 1727 and his wife managed until Dicey came in c. 1730. The question is what is Cluer's imprint? Also would Dicey's imprint suggest "Gosport Tragedy" to be c. 1730?