Looking at all that(it's late!!) could it be that the 2 Penders married to the Jordan's were not in fact brothers but maybe cousins?
They could only be distant cousins if both had a father named Michael
That's true alright.Must have been too late for me including rehashing all the info from a previous post which I only happened to see after posting!!!!!!
Looking at the addresses given on the marriage returns both men were from the same area of Carlow ie Rossmore (Michael and Alica Byrne) and Springhill(Michael and Mary Anne Laffan).Those townlands would be very close , if not actually adjoining.
Presume the Michael married to Anne Byrne moved to Cloghna after marrying as he is there in 1901 census and their eldest child (born in 1894)is registered as being born in Cloghna.
Any of the likely looking Penders on Griffith's Valuation seem to be in the general Tolerton/Ballickmoyler area in Laois(Queens County) civil parish of Kilabbin.This would be very close to Rossmore/Springfield ie the addresses on the marriage returns from c.50 years later.
