I have found, so far, 2 sons, Arthur & John, b 1803 & 1806
Baptisms of Pearson children, parents John & Ann, at St George Hanover Square:
02 Sep 1803: Arthur (born 8th? Month not stated).
24 Dec 1805: John (born 13 Sep 1805)
23 Jan 1807: Edward (born 13 Oct 1806)
23 Feb 1808: Mary Ann (born 12 Nov 1807)
10 Dec 1808: George (born 13 Nov 1808)
21 May 1810: George (born 13 Nov 1808)