How do you pronounce 'Alymere'?

I'm struggling to find any videos on how to pronounce Alymere, as in Sir Alymere who was one of King Arthur's knights at the round table. I can use the 'speak' option on my iPhone, but I watched a video on an Alymere table and it had a totally different pronunciation.

I always thought it was 'Aylmere'.

Alymer is pronounced "AL uh meer"