This was a LONG time ago but I too am working on the Peter Insley/Martha Ward family, I have found Martha's father to be Seth Ward and her mother to be Jane Shannon from her marriage in Feb 1928 to David Bardow. It states that one of the witnesses is W C Insley (Peter & her son is Webster Carlton Insley) She is listed at Martha Insley (which is why it took me so long to find this. Unfortunately that is ALL I can seem to find about her and Peter so any additional information would be GREAT!!!
I am currently trying to figure out if her husband is truly the child of John Insley and Fanny Osbourne as ALL of the census information states he was born in the US... but John and Fanny's son Peter was born in Canada.