More '-yson' on the (Fruit)cake

One -son of Ty- is Neil de Grasse.
In suits by Blass, Neil, spouting sass,
brings artistry to science class.

One -son of Dy- is Michael Eric.

Mike, part prof, part Baptist cleric,
rings exchanges esoteric.

A second -son of Ty-, Mad Mike,

who lost his dad while yet a tyke,
enlists twin fists nigh iron-like.

And what of Freeman, -son of Dy-?

And what of Peabo, -son of Bry-?
My ‘-yson’ well’s run dry. Goodbye.