Stuck on a Christian name - on cert,

[Tracey Finn Evans]

Stuck on a christian name I found on a marriage cert, of a great great great distance relative. It is a christian name of a man "Oth " and his surname is Lynch. He died before 1888 and all the info all came from a marriage cert of his son William Lynch who married Anne Deighnan in 1888, They were from the Boherbee/Bockagh and Ballaghaderreen area. Married in St Nathys and suggestions what Oth is? I did find its meaning in a baby names book in Dublin, thought I would remember it - but didnt !!!?? Would be so grateful. Tracey xx