There are a few Walsgrave on Sowe records on FreeREG.
Although nothing at present for your Thomas it may be worth checking again as new records are being added all the time.
Thomas and Anns Marriage is on Familysearch Pilot.
I see that Joseph and Sarah Harrisons Son Imanuel/Emanuel is staying with the Wakelins in 1851. (and their other Sons Joseph/Thomas I presume)
Joseph married Sarah BARKBY, 25 December 1822, Exhall near Coventry, Warwick
(Source Familysearch Pilot)
Children from IGI are;
THOMAS Harrison, 09 June 1824
JOSEPH BARKBY Harrison, 12 November 1826
ELIZABETH, 26 July 1829
IMMANUEL, 19 February 1832
All christened Bedworth, Warwick
OOPs just found your Tree and you have this!