Re "Erdington Chapel"
The existance of most of the Erdington churches/chapels listed on Midland Ancestors fall outside the time frame that we're interested in (c1820s). I've extracted these from the site purely on the basis of their existance in the early to mid part of the 19th century, there is nothing listed for earlier periods. At this time, most worshippers would have travelled to Aston.
St Barnabas seems to be the only one serving Erdington at that time, although the Congregationalists had services in 1814 in a building in Bell Lane (which became Orphanage Road) but there's no mention of a chapel. There was a Baptist Chapel at Six Ways, which was near Wood End Lane, but I think this opened in the 1870s.
C of E: St Barnabas High Street Consecrated 1824.as a chapel of ease to St Peter & St Paul, Aston
Congregationalists and Independents High Street : Chapel was built in 1839. Congregational services began at Erdington in 1814, in a building in Bell Lane Erdington, used in later years as a Roman Catholic chapel.
St Thomas & St Edmund of Canterbury The Abbey Sutton Road : A chapel in Bell Lane, was said to have been built in Erdington c.1839. In 1842 a school chapel was opened. A new church was begun in 1848 and consecrated in1850.
Methodists – Erdington
Orphanage Chapel was from 1862 – 8 a Wesleyan ‘preaching place’. Services were held in the small hall of the Erdington Almshouses founded by Josiah mason, and used until 1868, as the temporary homes of the Josiah Mason orphanage.
Also from the site, and by way of a potentially interesting link is this quote about Earl Howe who gifted much of the land etc. associated with St Barnabas Chapel/Church
"...the land, including the churchyard, the site of schools, and parsonage-house, was the gift of Earl Howe, the Rev. G. Peake, and the Rev. J. H. Harrison"