Does anyone recognise the following Clark family of Maughold?

Andrew Clark bn c 1680 poss Maughold, married Alice Qualtrough bn probably Rushen c 1684 - no marriage date found however. They had 4 known children:

Mary bp 1706, Maughold; Margaret bp 1709 Maughold: Alice bp 1713 Maughold; David bp 1717 Braddan.

Andrew Clark died Malew January 1735.

Alice Q Clark died 1755 at The Great Mill, Malew. She is the sister of William Qualtrough died 1703 of Renwillin Mill, Rushen and also had a sister Catherine who I haven't identified as yet. Alice Clark is mentioned in the will of her sister-in-law, Catherine Qualtrough als Waterson who died in Castletown, but late of Renwillin Mill, in December 1742.

Does anyone have any details of what might have happened to the children of Andrew & Alice?

Thank you
Elizabeth