When should I use "a" before a name in the vocative case?
before consonants except for f followed by a vowel, and not before vowels. So, greas ort: Iain, Anna, Fhionnlaigh, but a Fhlòraidh, a Mhòrag, a Sheumais
The light bulb did not switch on for me please explain
Jennifer's comment above was helpful. Fionnlagh is an F followed by a vowel so no "a". Flòraidh is an F followed by a consonant so you should use the "a". The H is only there because the names are in vocative case and aren't present in other cases.
Im still not understanding why no a is used before Fhionnlaigh, but an a is used before Fhlòraidh. They both start with a consonant....
Nevermind, the lightbulb just clicked on.