Family Logo

Can anyone ID this font?

This was made by a Great-Grandfather for his charcoal salt, and is now the logo for my Dad's business. I'm making T-shirts for it and wanted to use the same font for the family members individual shirts. Guessing that it was handwritten, and my research has come up with these close ones. Tantine Script-Bold (FontFontFF), Freehand 521 (Bitstream Freehand) and Freehand 575. I think 521 was the closest for my eyes except for the "k". I'm just looking for a font that has all the same style in the letters from the logo "Sparks'". Any help would be greatly appreciated.