Another site that helps in Irish Costuming that I find helpful - though not necessarily SCA Period is the Irish National Museum's site for their permanent display - The Way We Wore: 250 Years of Irish Clothing and Jewellery. Every time I visit Dublin I visit - and it is a fruitful peek along the path. Ireland, having been subject to many sumptuary laws had relatively conservative dress. I found this for the time period. The museum also recommends the books and author the other people mentioned in the previous links. So though it is not your period, I hope it helps you get a peek along the backward path in your research!
here is the link:
Vanessa O'Dwyer Guerrero
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