It hasn't been officially stated, but rumours are that Amy Rose and Shadow the Hedgehog are Silver's ancestors, though as Silver was (will be?) born 186 years in the future (at the very least; possibly more), and Amy Rose has never been said to be ageless or immortal, it is highly unlikely (nigh impossible) for her to be his mother.
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he is Jules Hedgehog his mom is bernie hedgehog
Jules (dad) and Bernie (mom) Hedgehog are Sonic's parents.
Of course, otherwise he wouldn't exist. In the Archie comics Sonic's dad is, Jules Hedgehog and his mom is, Bernie Hedgehog. However, this isn't canon to the game continuity.
In The Adventure Of Sonic The Hedgehog (Aosth) His Mother Is Mama Robotnik
If you want to see his real dad and mom then read the comic book.