In Irish Gaelic logán means a little hollow; a depression.
In Scottish Gaelic logan/lagan mean 'the hollow of the hand'.
The nationality or origin of the name Logan is Gaelic. The meaning of this name in Gaelic is from the hollow.
Logan is Celtic/Gaelic.
Logan is a Gaelic name which means "small cove" or "from the hollow".
Logan Spencer Ó Raifeartaigh
It has no meaning: it's not a Gaelic word.
Taylor is not a Gaelic word and has no meaning in Gaelic.
It has no meaning in Gaelic; it's not a Gaelic name.
The word 'bassett' is not a Gaelic word, and therefore has no meaning in Gaelic.
"Colin" isn't a Gaelic word and therefore doesn't have a meaning in Gaelic.
Cassandra does not have meaning in Gaelic because it's not Gaelic. It's a name of Greek origin possibly meaning 'shining upon man'.
Lexiology.com Dictionary http://www.lexiology.com/meaning/gaelic
'Heath' is an English word with no meaning in Gaelic.