For what its worth, I also have a baptism from St. Werburgh's chapel from 1841. It shows the priest as Edward Carbery, he shows up on the 1851 census at Queens street. St. John Parrish, Chester. Not sure where this is.
At the risk of beating a dead horse, found the following, (which answers my question about the location of St. Werburgh's church prior to 1875), at:
http://www.a2a.org.uk/search/documentxsl.asp?com=1&i=6&nbKey=1&stylesheet=xsl\A2A_com.xsl&keyword=st%20werburgh&properties=0601; ST. WERBURGH'S R.C. JUNIOR SCHOOL
hit[from Administrative History] St. Werburgh's R.C. School was built in Queen Street in 1854. The Roman Catholic Church of St. Werburgh was opened in Queen Street in 1799, and classes were probably held before a school was built in 1854. Additional school buildings were erected in 1870. A new church was built in Grosvenor Park Road in 1875. In 1967 St. Werburgh's juniors moved into the premises in Love Street, vacated by the girls of Love Street School. St. Werburgh's infants remained in Queen Street until 1968, when a new infant school opened in Westminster Road, Hoole.
ALSO:
Roman Catholic Church, St Werburgh parish, Chester
[from Administrative History] The Queens Street chapel, predecessor of St Werburgh, was erected after 1796 by the Rev Thomas Penswick, although there is evidence of the existence of a priest in Chester before this date. By the 1860s, the chapel had become unable to cater for the growing congregation, and St Werburgh was built in 1875, and extended between 1904 and 1914.