Thing is - one of them could well have been a lighthouse, according to a brief snippet in the Northern Whig in 1924: -
POST SCRIPT - One of the joys of this blog is receiving mail from people pointing out my errors. No, I'm not being sarcastic. The most important thing is to get the right information out there and if I've slipped up, then its far better that the error is corrected than if it is left to hang.
So I was genuinely delighted to receive a mail from Breandan O Scanaill who very nicely set the record straight on some points on the above post.
Firstly, he says, "I would say that this refers to the Catholic church of St Joseph, as it had a cross on top at one stage. I don’t think Christ Church ever had one."
The second point refers to the White Man. "The structure you think is the White Man is incorrect," he says. "The White Man is on rocks further out at sea, if you were approaching the coast from the ocean you would find this marker on a group of rocks with the White Lady beyond at the entrance to Clifden Bay. The structure you showed is one of a pair of channel markers, the first one opposite the Clifden Boat Club and the second in closer to Clifden. These structures mark rocks with their plain side but the other side is covered with white tiles and indicated the deeper channel which led to the Quay at Clifden. This channel is now fairly silted up, and there are very few large boats coming into harbour."
As Dougal would say, "I stand corrected." Many thanks, Breandan.