Boys names shortlist/ideas - second child

[Flint2923]

Expecting my second child later in the year. Don't know the sex, but if we have a girl I think I know what we'll end up going for. Boys names, however, we find a lot tougher.

We have a DD called Marla and it is important to me to have a sibling name that goes with it - at the very least, not something that is starkly different. Surname is Irish, begins with R, three syllables. I get quite fixated on the flow of first name and surname - I like it to be memorable (although trying to avoid alliteration as DH feels it's 'too much'). DH is Irish but we live in England.

Our shortlist currently:
Sidney
Patrick, known as Paddy
Ivor
Fergus
Issac

None are perfect for various reasons, but interested to hear people's thoughts on them. I feel like we've gone through every possible name in existence, and ruled most out, but interested to hear other suggestions too.

@ScoobyG I do really like the full name too. I've mentioned it in another comment, but the drawback with it is that I have a relation on my side with that name - not close enough to be named after him, not distant enough for his name not to come up. I like Paddy as well as Patrick and thought it may help differentiate.

Cillian my DH is keen on but I just can't take to it. Seamus I would consider, but DH and I pronounce it differently. I'm saying it 'Shay-mus', is that right? DH seems to add more 'shhh' into it than I do and it all comes out sounding a bit Sean Connery. For various reasons, I can't see the others working for us.

OP Paddy is lovely (obv use Patrick as the full name). I've known two English raised Paddys in my lifetime, I don't think it's odd at all. People just assume Irish heritage which they both had

Surely people don’t tell those sort of jokes anymore?

Fergal? I like Fergus but I do get the Fungus issue.
Dermot (since you mentioned it upthread)?