What's His Name? (Part II)

"Can I have Mark AND Nathaniel if I let you have Mosiah?"
"No, you get Mark or Nathaniel, not both."
"Please?"
"No way."
"Remember that you were gone for ten days and missed his birth?" (I'm desperate.)
"No."

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After spending far too many hours with the computer and google searches such as "cool names that are unpopular" or "top 100 names of the year," Dallin declares, "I've got the perfect name!"
"Oh?"
"Would you rather hear it or see it written out?"
"Whatever."
"OK, ready?"
"I'm ready."
"It's so great!"
"OK."
"Algernon!"
"ALGERNON?!"
"We could call him Algy." (You can't possibly appreciate this conversation without seeing the excited grin on Dallin's face)
"Algae?! Why not Fungus?"