William Walker was born in Merton, Surrey, 14 Sep 1769 and christened in Finbury, London, on 24 Sep 1769. Parents were Charles and Susanna (Lipsey) Walker. Charles married Mary Obee also of Surrey on 15 Feb 1791. He died in 1841.
https://www.familysearch.org/tree/pedigree/landscape/MXY2-P4T "England Marriages, 1538–1973 ," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:NVZK-R29 : 10 December 2014), William Walker and Mary Obee, 13 Feb 1791; citing Saint Saviour,Southwark,Surrey,England, reference , index based upon data collected by the Genealogical Society of Utah, Salt Lake City; FHL microfilm 307,706, 307,707, 307,708, 307,709, 307,710, 307,711, 307,712.. "England, Surrey Parish Registers, 1536-1992," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:QGKC-5YZK : 14 September 2019), Wm Walker, 30 Jan 1791; citing Marriage, Southwark, Surrey, England, London Metropolitan Archives, England; FHL microfilm .
Have you taken a DNA test? If so, login to add it. If not, see our friends at Ancestry DNA.