The baptismal records of St. Magnus the Martyr, City of London, dated 6 April 1729 would seem to suggest Henry Jacob Wall's father was also named Henry Jacob Wall and his mother was named Mary. (https://www.ancestry.com/imageviewer/collections/1624/images/31281_...). At any rate, it is absolutely certain that Henry Jacob Wall, born in 1729 in London, England (not Canada) was NOT the son of Samuel Wall, who was born about 1835 in Derbyshire, England and died in 1918 in Somerset. Neither was his mother, Elizabeth, born in 1843 in Gloucestershire. For these reasons, if for none other, I will go with the father of Henry Jacob Wall (the younger) as Henry Jacob Wall (the Elder).