Good question Siasl but it's also a very murky subject and one that's positively wreathed in the mists of time.
I doubt if Dracula even knew who his
father was (these monster families are all notoriously promiscuous) but I do know all about Dracula's mother.
I can confidently say that Dracula's mother is none other than an American actress called Mary Lechter.
At least she was - in the film appropriately called
Dracula's Mother, a ridiculously low-budget, black and white US horror B-movie made in 2007 and shot on a budget of $15,000, which is less than half a bowl of peanuts.

For those lucky enough to have missed this film, the 'plot' is that young Dracula has the mega hots for the girl next door (called Lucy) and asks her to ankle down the aisle with him and become the new Mrs Dracula...but the old Mrs Dracula, his mum, has other ideas. She is literally horrified by her son Dracula's choice.
The result? All hell breaks out in an epic stinker of a script about the age old story of a family at war where Dracula is forced to choose between his horrible mother or Lucy, his one true love.