Hello Anne,
This reply is probably a bit late for you, as I see you are visiting Ireland in April. I will start with a question. What was the religion of your ancestors? , This would indicate which church records, if any, might be relevant. As your previous responder has said, the records get more scant the fiurther we go back.
I have a few references to Selby in Co. Laois as follows which may of interest:
On a list of freeholders for Co. Laois(then known as Queen,s Co.) there is a listing of a John Selby at Abbeyleix with property at Rossmore dated 1759. Abbeyleix is a town in Co. Laois. Unfortunately there are four placenames called Rossmore in the County and there is no indication on the record as to which one is proper to John Selby.
On the tithe record a George Selby is listed at Tennakilly, parish of Offerlane in Co. Laois. This record is dated 1828. It is possible to identify Tennakilly Even though the present day spelling is Tinnakill, variations in spelling are not uncommon on old records.
The next record is that known as Griffith's Valuation and on this a George Selby (probably the same as on the tithe record) is listed at Tinnakill. This record is dated 1850. A map accompanies Griffith's Valuation, therefore it is possible to pinpoint this location.
The last set of records are the Census of 1901&1911. These show a Selby family still living at Tinnakill.I have looked at the telephone directory for the area but there is no listing of Selby and so far have been unable to find out when they may have left the area.
It is highly probable that these Selbys are connected to you for two reasons;
1. The name is not plentiful even in Ireland.
2.In my research, the above were the only references to Selby in Co. Laois.
The above records are available online at the websites listed below:
Freeholders of Co. Laois:
http://www.igp-web.com/laois//freeholders/free8.htm
Tithe Records:
http://titheapplotmentbooks.nationalarchives.ie/search/tab/results.jsp
Griffith's Valuation:
http://griffiths.askaboutireland.ie
Census of 1901/1911:
http://www.nationalarchives.ie
If you let me know when you are in Ireland and if you wish, I might be able to meet you and show you the places that are listed in this message.
Whatever you decide, I wish you safe and happy travels in Ireland.
Best wishes,
Paddy Lacey,
Ballyadams, Co.Laois