I will check the archives for Elizabeth's marriage to see if parents are listed. She is probably a sister of William and David. James and William Wriggett came to Canada around 1818. They are listed in the 1837 Directory as James and William Wricket. William ended up living in Etobicoke. James lived in Vaughan. Elizabeth married James' son Thomas. I have searched for Wedgewood on Ontario GenWeb. The name does not show up in the census entries posted so far.