Here's a possible birth record for Ann from www.rootsireland.ie/:
Name: Anne Sharpe Date of Birth:
Date of Baptism: 05-Aug-1824
Address: Ng Parish/District: KILLYBEGS UPPER
Gender: Female County Co. Donegal
Denomination: Church Of Ireland
Father: Thomas Sharpe Mother: Anne
Sponsor 1 /
Informant 1: George Bell Sponsor 2 /
Informant 2: Jane Gartley
I couldn't find Sarah or other siblings.
No luck with Patrick I'm afraid! You might try findmypastireland which requires credit but has 3342 Patrick Boyles born in Donegal. http://www.findmypast.ie/
In a few months the Nat Library of Ireland will make RC records freely accessible so if Boyles were RC...
The Tithe Applotments (free at http://titheapplotmentbooks.nationalarchives.ie/) have 297 Boyles in Templecrone 1820's & 30's but no mention of Newtown. Similarly Griffiths Valuationhas (free) 388 in Templecrone in 1857 http://www.askaboutireland.ie/