Does anyone have info on or connect with this Kinvig family:

John Kinvig married Catherine Qualtrough 1740 Rushen. John died 1766 "a poor man" and Catherine died 1773. She was daughter of John Qualtrough & Jane Kelly.

Children of John & Catherine Kinvig were:

William 1740, Catherine 1742, John 1743, William 1754. All bn Rushen. There may have been others.

Information and contact welcome.
Thank you

Elizabeth