1861 census has entry for Marown (Garth):
Thomas Cain, Head 58, Agri. Lab. b. Marown
Christiana, Wife, 56, b. Douglas
Jane, Daughter, 17, servant, b. Marown
Charles Kelly, 7, Grandson, b. Marown

Brian Lawson's burial register has a Thomas Cain in Braddan on July 29 1869 aged 67 and a Christian Cain in Marown on December 12 1871 aged 74.

Ages in the census are what was written down by the person taking the census and can often be in error. In earlier census instructions, adults' ages were rounded down to the next five years (e.g.28 was recorded as 25)