Hi,
Thank you very much for your message-I hope that someone with information makes a connection with you.
Have you tried looking at church records in Bangor parish to see if you can find any birth records for either David or Frank?
Catholic records for Bangor start in 1855, but unfortunately there are no copies available so you will hev to contact the local parish priest for assistance:
http://www.irishtimes.com/ancestor/fuses/rcparishmaps/index.cfm?fuseaction=showidrecords&CityCounty=Down&parish=Bangor&churchid=452
Here is the contact page for the parish priest:
http://www.bangorparish.com/contact-us/
Most surviving Church of Ireland records are still held by the local clergy, although some are in the National Archives of Ireland and others are in the Representative Church Body Library in Dublin. Here are their websites: http://www.nationalarchives.ie/ and http://ireland.anglican.org/about/42
Lists of these surviving registers can also be found at the National Library of Ireland.
Have you tried looking for the family in Griffith?s Valuation? This is a property valuation survey carried out 1848-64. It doesn?t give any genealogical information but can sometimes be used to tie a person to a specific place-if you know Frank?s father?s name you may be able to find him in this:
www.askaboutireland.ie/griffith-valuation/
Have you looked for the family in the 1901/1911 census records? http://www.census.nationalarchives.ie/
Some other websites that you may find useful are:
The National Archives of Ireland http://www.nationalarchives.ie/genealogy1/genealogy-records/introduction/
The National Library of Ireland http://www.nli.ie/en/family-history-introduction.aspx
The National Archives UK ? genealogy search: http://www.nationalarchives.gov.uk/records/looking-for-person/
The Public Records Office of Northern Ireland http://www.proni.gov.uk/index/family_history.htm
Family Search: www.familysearch.org
Genealogy links: http://www.genealogylinks.net/uk/ireland/down/index.html
It may also be an idea to contact the Ulster Historical Foundation for some assistance, however a fee may apply:
enquiry@uhk.org.uk
Kind regards,
Genealogy Support