Looking for family Mangan, McDonough.

I would like to have any information at all on my grandmother's family. She was Bridget, daughter of Martin Mangan and Honour McDonough (not sure of DOB) but baptised in parish of Inagh 24/3/1902 by the Rev James Carey CC and witnessed by Michael McDonough and Margaret Keane. She had an older brother Patrick (Mangan) and 2 sisters Theresa (died of TB) husband Joe Cox and Elizabeth (Betty) married to Robert Twilton )they had a son Gerald. My grandmother and her sisters moved to England (London, Middlesex and Essex - Westcliffe) at some stage of her life and was married twice - her first husband died of an illness then she married Daniel Cullen and had 2 children Brian and Maureen. I am unsure of any details about my grandmother's family so anything at all would be much appreciated. 

Thank you

Karla