Merrill, i think you have got the wrong parish for Ballacomish, it is in Arbory not Malew.
According to IGI William Duggan and Jenny Worthington had the following children:-

Mary Elizabeth ch.15 July 1862
Frances Jane ch.24 Sept. 1863
William Worthington ch.11 Aug 1865
Frank Stanley ch 15 Jan 1871
Eunice Isabella ch. 9 Aug 1874
Eleanor Catherine ch. 17 Dec 1875
Edith May ch.15 Jan 1871 posibly Frank's twin.
If your not familiar with this site go to www.familysearch.org and follow their search tips.Also go to Frances Coakley's site www.ee.surrey.ac.uk/contrib/manx/index and use the search page for words like Ballacomish and Duggan etc. Then go to Brian Lawson's site www.lawsons.ca you will find in the index of deaths the following:-

Mary Elizabeth d.30 Jan 1948
Frances Jane d.28 March 1947
William Worthington d. 31 Oct 1932
Edith May d. 24 Mar 1945
Elaenor Catherine d. 21 March 1949

In the 1881 census they were living at a 25 acre farm at Ballacomish on the Ronague Road Arbory. William Wothington was working as an apprentice to Jacob Kelly a grocer and spirit dealer on the Fort Ann Road in Douglas.

Len Faragher